diff --git a/.github/workflows/firestore-nightly.yml b/.github/workflows/firestore-nightly.yml
index 36beeadb4ac..cd2afee4f43 100644
--- a/.github/workflows/firestore-nightly.yml
+++ b/.github/workflows/firestore-nightly.yml
@@ -15,6 +15,8 @@
 name: firestore_nightly
 
 on:
+  pull_request:
+    branches: [ "cheryllin/pplapi", "cheryllin/ppl" ]
   workflow_dispatch:
 
 concurrency:
@@ -49,6 +51,7 @@ jobs:
       plist_secret: ${{ secrets.GHASecretsGPGPassphrase1 }}
       MINT_PATH: ${{ github.workspace }}/mint
       TARGET_DATABASE_ID: ${{ matrix.databaseId }}
+      USE_LATEST_CMAKE: false
 
     runs-on: ${{ matrix.os }}
     steps:
@@ -77,6 +80,11 @@ jobs:
       run: scripts/decrypt_gha_secret.sh scripts/gha-encrypted/firestore-nightly.plist.gpg \
         Firestore/Example/App/GoogleService-Info.plist "$plist_secret"
 
+    - name: Setup cmake
+      uses: jwlawson/actions-setup-cmake@v2
+      with:
+        cmake-version: '3.31.1'
+
     # Skipping terraform index creation because we are not allowed to download SA key json.
 
     - name: Setup build
diff --git a/.gitignore b/.gitignore
index dc909fe4338..74607c5993b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -155,6 +155,7 @@ FirebaseAppCheck/Apps/AppCheckCustomProvideApp/AppCheckCustomProvideApp/GoogleSe
 /Example/FirestoreSample/ui-debug.log
 /Example/FirestoreSample/firestore-debug.log
 /Example/FirestoreSample/firebase-debug.log
+Firestore/Example/GoogleService-Info.plist
 
 # generated Terraform docs
 .terraform/*
diff --git a/Firestore/CHANGELOG.md b/Firestore/CHANGELOG.md
index bcb63c64c11..be06d99f4ab 100644
--- a/Firestore/CHANGELOG.md
+++ b/Firestore/CHANGELOG.md
@@ -1,3 +1,6 @@
+# Unreleased
+- [feature] Add `Pipeline` support.
+
 # 11.12.0
 - [fixed] Fixed the `null` value handling in `isNotEqualTo` and `notIn` filters.
 
diff --git a/Firestore/Example/Firestore.xcodeproj/project.pbxproj b/Firestore/Example/Firestore.xcodeproj/project.pbxproj
index caed5e945ef..b312da6945c 100644
--- a/Firestore/Example/Firestore.xcodeproj/project.pbxproj
+++ b/Firestore/Example/Firestore.xcodeproj/project.pbxproj
@@ -322,9 +322,11 @@
 		2EC1C4D202A01A632339A161 /* field_transform_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = 7515B47C92ABEEC66864B55C /* field_transform_test.cc */; };
 		2F3740131CC8F8230351B91D /* byte_stream_cpp_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = 01D10113ECC5B446DB35E96D /* byte_stream_cpp_test.cc */; };
 		2F69187F601E00054469F4A5 /* DatabaseTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3355BE9391CC4857AF0BDAE3 /* DatabaseTests.swift */; };
+		2F72DBE2EC6E24A81C69DEF0 /* explain_stats.pb.cc in Sources */ = {isa = PBXBuildFile; fileRef = 428662F00938E9E21F7080D7 /* explain_stats.pb.cc */; };
 		2F8FDF35BBB549A6F4D2118E /* FSTMemorySpecTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 5492E02F20213FFC00B64F25 /* FSTMemorySpecTests.mm */; };
 		2FA0BAE32D587DF2EA5EEB97 /* async_queue_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = B6FB467B208E9A8200554BA2 /* async_queue_test.cc */; };
 		2FAE0BCBE559ED7214AEFEB7 /* Validation_BloomFilterTest_MD5_1_01_bloom_filter_proto.json in Resources */ = {isa = PBXBuildFile; fileRef = 0D964D4936953635AC7E0834 /* Validation_BloomFilterTest_MD5_1_01_bloom_filter_proto.json */; };
+		2FC2B732841BF2C425EB35DF /* field_behavior.pb.cc in Sources */ = {isa = PBXBuildFile; fileRef = 1F78CD3208A1D5885B4C134E /* field_behavior.pb.cc */; };
 		3040FD156E1B7C92B0F2A70C /* ordered_code_benchmark.cc in Sources */ = {isa = PBXBuildFile; fileRef = 0473AFFF5567E667A125347B /* ordered_code_benchmark.cc */; };
 		3056418E81BC7584FBE8AD6C /* user_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = CCC9BD953F121B9E29F9AA42 /* user_test.cc */; };
 		306E762DC6B829CED4FD995D /* target_id_generator_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = AB380CF82019382300D97691 /* target_id_generator_test.cc */; };
@@ -381,6 +383,7 @@
 		39790AC7E71BC06D48144BED /* memory_globals_cache_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = 5C6DEA63FBDE19D841291723 /* memory_globals_cache_test.cc */; };
 		3987A3E8534BAA496D966735 /* memory_index_manager_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = DB5A1E760451189DA36028B3 /* memory_index_manager_test.cc */; };
 		39CDC9EC5FD2E891D6D49151 /* secure_random_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = 54740A531FC913E500713A1A /* secure_random_test.cc */; };
+		3A110ECBF96B6E44BA77011A /* field_behavior.pb.cc in Sources */ = {isa = PBXBuildFile; fileRef = 1F78CD3208A1D5885B4C134E /* field_behavior.pb.cc */; };
 		3A307F319553A977258BB3D6 /* view_snapshot_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = CC572A9168BBEF7B83E4BBC5 /* view_snapshot_test.cc */; };
 		3A7CB01751697ED599F2D9A1 /* executor_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = B6FB4688208F9B9100554BA2 /* executor_test.cc */; };
 		3A93D8FB318C6491A6B654F5 /* Validation_BloomFilterTest_MD5_50000_01_bloom_filter_proto.json in Resources */ = {isa = PBXBuildFile; fileRef = 7B44DD11682C4803B73DCC34 /* Validation_BloomFilterTest_MD5_50000_01_bloom_filter_proto.json */; };
@@ -401,6 +404,7 @@
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 		3CFFA6F016231446367E3A69 /* listen_spec_test.json in Resources */ = {isa = PBXBuildFile; fileRef = 54DA12A01F315EE100DD57A1 /* listen_spec_test.json */; };
 		3D22F56C0DE7C7256C75DC06 /* tree_sorted_map_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = 549CCA4D20A36DBB00BCEB75 /* tree_sorted_map_test.cc */; };
+		3D5F7AA7BB68529F47BE4B12 /* PipelineApiTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 59BF06E5A4988F9F949DD871 /* PipelineApiTests.swift */; };
 		3D6AC48D6197E6539BBBD28F /* thread_safe_memoizer_testing.cc in Sources */ = {isa = PBXBuildFile; fileRef = 6E42FA109D363EA7F3387AAE /* thread_safe_memoizer_testing.cc */; };
 		3D9619906F09108E34FF0C95 /* FSTSmokeTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 5492E07C202154EB00B64F25 /* FSTSmokeTests.mm */; };
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@@ -684,6 +688,7 @@
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+		5CDD24225992674A4D3E3D4E /* pipeline.pb.cc in Sources */ = {isa = PBXBuildFile; fileRef = D49E7AEE500651D25C5360C3 /* pipeline.pb.cc */; };
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@@ -732,6 +737,7 @@
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+		60DA778E447F9ACD402FDA2F /* pipeline.pb.cc in Sources */ = {isa = PBXBuildFile; fileRef = D49E7AEE500651D25C5360C3 /* pipeline.pb.cc */; };
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@@ -769,6 +775,7 @@
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+		655F8647F57E5F2155DFF7B5 /* PipelineTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 861684E49DAC993D153E60D0 /* PipelineTests.swift */; };
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@@ -907,6 +915,7 @@
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 			sourceTree = "<group>";
 		};
+		C7D3D622BB13EB3C3301DA4F /* TestHelper */ = {
+			isa = PBXGroup;
+			children = (
+				0E73D03B9C02CAC7BEBAFA86 /* TestHelper.swift */,
+			);
+			name = TestHelper;
+			sourceTree = "<group>";
+		};
 		DAFF0CF621E64AC30062958F /* macOS */ = {
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+				8429E18EFBAF473209731E01 /* pipeline.pb.cc in Sources */,
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 				3B1E27D951407FD237E64D07 /* FirestoreEncoderTests.swift in Sources */,
 				62E54B862A9E910B003347C8 /* IndexingTests.swift in Sources */,
+				3D5F7AA7BB68529F47BE4B12 /* PipelineApiTests.swift in Sources */,
+				655F8647F57E5F2155DFF7B5 /* PipelineTests.swift in Sources */,
 				621D620C28F9CE7400D2FA26 /* QueryIntegrationTests.swift in Sources */,
 				1CFBD4563960D8A20C4679A3 /* SnapshotListenerSourceTests.swift in Sources */,
+				EE4C4BE7F93366AE6368EE02 /* TestHelper.swift in Sources */,
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 				AECCD9663BB3DC52199F954A /* executor_std_test.cc in Sources */,
 				18F644E6AA98E6D6F3F1F809 /* executor_test.cc in Sources */,
+				ABE599C3BF9FB6AFF18AA901 /* explain_stats.pb.cc in Sources */,
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 				258B372CF33B7E7984BBA659 /* fake_target_metadata_provider.cc in Sources */,
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 				EECC1EC64CA963A8376FA55C /* persistence_testing.cc in Sources */,
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 				62E54B852A9E910B003347C8 /* IndexingTests.swift in Sources */,
+				DF6FBE5BBD578B0DD34CEFA1 /* PipelineApiTests.swift in Sources */,
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 				621D620B28F9CE7400D2FA26 /* QueryIntegrationTests.swift in Sources */,
 				A0BC30D482B0ABD1A3A24CDC /* SnapshotListenerSourceTests.swift in Sources */,
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 				17DFF30CF61D87883986E8B6 /* executor_std_test.cc in Sources */,
 				814724DE70EFC3DDF439CD78 /* executor_test.cc in Sources */,
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 				4D2655C5675D83205C3749DC /* fake_target_metadata_provider.cc in Sources */,
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 				B6FB4690208F9BB300554BA2 /* executor_test.cc in Sources */,
+				DDC782CBA37AA9B0EA373B7A /* explain_stats.pb.cc in Sources */,
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 				FAE5DA6ED3E1842DC21453EE /* fake_target_metadata_provider.cc in Sources */,
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 				6F45846C159D3C063DBD3CBE /* FirestoreEncoderTests.swift in Sources */,
 				62E54B842A9E910B003347C8 /* IndexingTests.swift in Sources */,
+				BD74B0E1FC752236A7376BC3 /* PipelineApiTests.swift in Sources */,
+				E04CB0D580980748D5DC453F /* PipelineTests.swift in Sources */,
 				621D620A28F9CE7400D2FA26 /* QueryIntegrationTests.swift in Sources */,
 				B00F8D1819EE20C45B660940 /* SnapshotListenerSourceTests.swift in Sources */,
+				AD34726BFD3461FF64BBD56D /* TestHelper.swift in Sources */,
 				EFF22EAA2C5060A4009A369B /* VectorIntegrationTests.swift in Sources */,
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 				125B1048ECB755C2106802EB /* executor_std_test.cc in Sources */,
 				DABB9FB61B1733F985CBF713 /* executor_test.cc in Sources */,
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 				BA1C5EAE87393D8E60F5AE6D /* fake_target_metadata_provider.cc in Sources */,
+				3A110ECBF96B6E44BA77011A /* field_behavior.pb.cc in Sources */,
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 				6105A1365831B79A7DEEA4F3 /* path_test.cc in Sources */,
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diff --git a/Firestore/Example/Firestore.xcodeproj/xcshareddata/xcschemes/Firestore_IntegrationTests_macOS.xcscheme b/Firestore/Example/Firestore.xcodeproj/xcshareddata/xcschemes/Firestore_IntegrationTests_macOS.xcscheme
index 809a72983a5..b6e7d07944b 100644
--- a/Firestore/Example/Firestore.xcodeproj/xcshareddata/xcschemes/Firestore_IntegrationTests_macOS.xcscheme
+++ b/Firestore/Example/Firestore.xcodeproj/xcshareddata/xcschemes/Firestore_IntegrationTests_macOS.xcscheme
@@ -27,6 +27,15 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "54B8E4A9224BDC4100930F18"
+            BuildableName = "Firestore_IntegrationTests_macOS.xctest"
+            BlueprintName = "Firestore_IntegrationTests_macOS"
+            ReferencedContainer = "container:Firestore.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <Testables>
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@@ -39,17 +48,6 @@
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-            BlueprintName = "Firestore_IntegrationTests_macOS"
-            ReferencedContainer = "container:Firestore.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -70,8 +68,6 @@
             ReferencedContainer = "container:Firestore.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
diff --git a/Firestore/Example/Tests/Util/FSTIntegrationTestCase.h b/Firestore/Example/Tests/Util/FSTIntegrationTestCase.h
index faca06dee8c..5365f4696ff 100644
--- a/Firestore/Example/Tests/Util/FSTIntegrationTestCase.h
+++ b/Firestore/Example/Tests/Util/FSTIntegrationTestCase.h
@@ -51,6 +51,8 @@ extern "C" {
 /** Returns the default Firestore database ID for testing. */
 + (NSString *)databaseID;
 
++ (void)switchToEnterpriseMode;
+
 + (bool)isRunningAgainstEmulator;
 
 /** Returns a FirestoreSettings configured to use either hexa or the emulator. */
diff --git a/Firestore/Example/Tests/Util/FSTIntegrationTestCase.mm b/Firestore/Example/Tests/Util/FSTIntegrationTestCase.mm
index c64b1e80706..9d69be35af4 100644
--- a/Firestore/Example/Tests/Util/FSTIntegrationTestCase.mm
+++ b/Firestore/Example/Tests/Util/FSTIntegrationTestCase.mm
@@ -86,6 +86,7 @@
 
 static NSString *defaultProjectId;
 static NSString *defaultDatabaseId = @"(default)";
+static NSString *enterpriseDatabaseId = @"enterprise";
 static FIRFirestoreSettings *defaultSettings;
 
 static bool runningAgainstEmulator = false;
@@ -273,6 +274,10 @@ + (NSString *)databaseID {
   return defaultDatabaseId;
 }
 
++ (void)switchToEnterpriseMode {
+  defaultDatabaseId = enterpriseDatabaseId;
+}
+
 + (bool)isRunningAgainstEmulator {
   // The only way to determine whether or not we're running against the emulator is to figure out
   // which testing environment we're using.  Essentially `setUpDefaults` determines
diff --git a/Firestore/Protos/CMakeLists.txt b/Firestore/Protos/CMakeLists.txt
index 8b1174c0880..7f99f520efe 100644
--- a/Firestore/Protos/CMakeLists.txt
+++ b/Firestore/Protos/CMakeLists.txt
@@ -42,13 +42,16 @@ set(
   firestore/local/target
   firestore/bundle
   google/api/annotations
+  google/api/field_behavior
   google/api/http
   google/firestore/admin/index
   google/firestore/v1/aggregation_result
   google/firestore/v1/bloom_filter
   google/firestore/v1/common
   google/firestore/v1/document
+  google/firestore/v1/explain_stats
   google/firestore/v1/firestore
+  google/firestore/v1/pipeline
   google/firestore/v1/query
   google/firestore/v1/write
   google/rpc/status
diff --git a/Firestore/Protos/cpp/firestore/bundle.pb.cc b/Firestore/Protos/cpp/firestore/bundle.pb.cc
index dea27558a70..6d09c26d56c 100644
--- a/Firestore/Protos/cpp/firestore/bundle.pb.cc
+++ b/Firestore/Protos/cpp/firestore/bundle.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/firestore/bundle.pb.h b/Firestore/Protos/cpp/firestore/bundle.pb.h
index db434fce62c..d5a71122e90 100644
--- a/Firestore/Protos/cpp/firestore/bundle.pb.h
+++ b/Firestore/Protos/cpp/firestore/bundle.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/firestore/local/maybe_document.pb.cc b/Firestore/Protos/cpp/firestore/local/maybe_document.pb.cc
index 1358658bb2f..6f7f26d0bea 100644
--- a/Firestore/Protos/cpp/firestore/local/maybe_document.pb.cc
+++ b/Firestore/Protos/cpp/firestore/local/maybe_document.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/firestore/local/maybe_document.pb.h b/Firestore/Protos/cpp/firestore/local/maybe_document.pb.h
index 87485480df7..b4b2c6165dc 100644
--- a/Firestore/Protos/cpp/firestore/local/maybe_document.pb.h
+++ b/Firestore/Protos/cpp/firestore/local/maybe_document.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/firestore/local/mutation.pb.cc b/Firestore/Protos/cpp/firestore/local/mutation.pb.cc
index 8f3f2106ada..b371cd012ce 100644
--- a/Firestore/Protos/cpp/firestore/local/mutation.pb.cc
+++ b/Firestore/Protos/cpp/firestore/local/mutation.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/firestore/local/mutation.pb.h b/Firestore/Protos/cpp/firestore/local/mutation.pb.h
index 2fb6b0fc7ae..15577de634e 100644
--- a/Firestore/Protos/cpp/firestore/local/mutation.pb.h
+++ b/Firestore/Protos/cpp/firestore/local/mutation.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/firestore/local/target.pb.cc b/Firestore/Protos/cpp/firestore/local/target.pb.cc
index 03d00b6ca6b..596902bec3e 100644
--- a/Firestore/Protos/cpp/firestore/local/target.pb.cc
+++ b/Firestore/Protos/cpp/firestore/local/target.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/firestore/local/target.pb.h b/Firestore/Protos/cpp/firestore/local/target.pb.h
index 4e6a3f23c68..f27235b63fc 100644
--- a/Firestore/Protos/cpp/firestore/local/target.pb.h
+++ b/Firestore/Protos/cpp/firestore/local/target.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/api/annotations.pb.cc b/Firestore/Protos/cpp/google/api/annotations.pb.cc
index 85f674c1681..ef0a89796d5 100644
--- a/Firestore/Protos/cpp/google/api/annotations.pb.cc
+++ b/Firestore/Protos/cpp/google/api/annotations.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/api/annotations.pb.h b/Firestore/Protos/cpp/google/api/annotations.pb.h
index 0f7db1a60c4..f4c3fedecd5 100644
--- a/Firestore/Protos/cpp/google/api/annotations.pb.h
+++ b/Firestore/Protos/cpp/google/api/annotations.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/api/field_behavior.pb.cc b/Firestore/Protos/cpp/google/api/field_behavior.pb.cc
new file mode 100644
index 00000000000..823b3d6de3b
--- /dev/null
+++ b/Firestore/Protos/cpp/google/api/field_behavior.pb.cc
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/api/field_behavior.proto
+
+#include "google/api/field_behavior.pb.h"
+
+#include <algorithm>
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/extension_set.h"
+#include "google/protobuf/wire_format_lite.h"
+#include "google/protobuf/descriptor.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/reflection_ops.h"
+#include "google/protobuf/wire_format.h"
+#include "google/protobuf/generated_message_tctable_impl.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+PROTOBUF_PRAGMA_INIT_SEG
+namespace _pb = ::google::protobuf;
+namespace _pbi = ::google::protobuf::internal;
+namespace _fl = ::google::protobuf::internal::field_layout;
+namespace google {
+namespace api {
+}  // namespace api
+}  // namespace google
+static const ::_pb::EnumDescriptor* file_level_enum_descriptors_google_2fapi_2ffield_5fbehavior_2eproto[1];
+static constexpr const ::_pb::ServiceDescriptor**
+    file_level_service_descriptors_google_2fapi_2ffield_5fbehavior_2eproto = nullptr;
+const ::uint32_t TableStruct_google_2fapi_2ffield_5fbehavior_2eproto::offsets[1] = {};
+static constexpr ::_pbi::MigrationSchema* schemas = nullptr;
+static constexpr ::_pb::Message* const* file_default_instances = nullptr;
+const char descriptor_table_protodef_google_2fapi_2ffield_5fbehavior_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+    "\n\037google/api/field_behavior.proto\022\ngoogl"
+    "e.api\032 google/protobuf/descriptor.proto*"
+    "\266\001\n\rFieldBehavior\022\036\n\032FIELD_BEHAVIOR_UNSP"
+    "ECIFIED\020\000\022\014\n\010OPTIONAL\020\001\022\014\n\010REQUIRED\020\002\022\017\n"
+    "\013OUTPUT_ONLY\020\003\022\016\n\nINPUT_ONLY\020\004\022\r\n\tIMMUTA"
+    "BLE\020\005\022\022\n\016UNORDERED_LIST\020\006\022\025\n\021NON_EMPTY_D"
+    "EFAULT\020\007\022\016\n\nIDENTIFIER\020\010:U\n\016field_behavi"
+    "or\022\035.google.protobuf.FieldOptions\030\234\010 \003(\016"
+    "2\031.google.api.FieldBehaviorB\002\020\000Bp\n\016com.g"
+    "oogle.apiB\022FieldBehaviorProtoP\001ZAgoogle."
+    "golang.org/genproto/googleapis/api/annot"
+    "ations;annotations\242\002\004GAPIb\006proto3"
+};
+static const ::_pbi::DescriptorTable* const descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto_deps[1] =
+    {
+        &::descriptor_table_google_2fprotobuf_2fdescriptor_2eproto,
+};
+static ::absl::once_flag descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto_once;
+const ::_pbi::DescriptorTable descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto = {
+    false,
+    false,
+    473,
+    descriptor_table_protodef_google_2fapi_2ffield_5fbehavior_2eproto,
+    "google/api/field_behavior.proto",
+    &descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto_once,
+    descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto_deps,
+    1,
+    0,
+    schemas,
+    file_default_instances,
+    TableStruct_google_2fapi_2ffield_5fbehavior_2eproto::offsets,
+    nullptr,
+    file_level_enum_descriptors_google_2fapi_2ffield_5fbehavior_2eproto,
+    file_level_service_descriptors_google_2fapi_2ffield_5fbehavior_2eproto,
+};
+
+// This function exists to be marked as weak.
+// It can significantly speed up compilation by breaking up LLVM's SCC
+// in the .pb.cc translation units. Large translation units see a
+// reduction of more than 35% of walltime for optimized builds. Without
+// the weak attribute all the messages in the file, including all the
+// vtables and everything they use become part of the same SCC through
+// a cycle like:
+// GetMetadata -> descriptor table -> default instances ->
+//   vtables -> GetMetadata
+// By adding a weak function here we break the connection from the
+// individual vtables back into the descriptor table.
+PROTOBUF_ATTRIBUTE_WEAK const ::_pbi::DescriptorTable* descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto_getter() {
+  return &descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto;
+}
+// Force running AddDescriptors() at dynamic initialization time.
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2
+static ::_pbi::AddDescriptorsRunner dynamic_init_dummy_google_2fapi_2ffield_5fbehavior_2eproto(&descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto);
+namespace google {
+namespace api {
+const ::google::protobuf::EnumDescriptor* FieldBehavior_descriptor() {
+  ::google::protobuf::internal::AssignDescriptors(&descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto);
+  return file_level_enum_descriptors_google_2fapi_2ffield_5fbehavior_2eproto[0];
+}
+PROTOBUF_CONSTINIT const uint32_t FieldBehavior_internal_data_[] = {
+    589824u, 0u, };
+bool FieldBehavior_IsValid(int value) {
+  return 0 <= value && value <= 8;
+}
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 ::google::protobuf::internal::ExtensionIdentifier< ::google::protobuf::FieldOptions,
+    ::google::protobuf::internal::RepeatedEnumTypeTraits< ::google::api::FieldBehavior, ::google::api::FieldBehavior_IsValid>, 14, false>
+  field_behavior(kFieldBehaviorFieldNumber, static_cast< ::google::api::FieldBehavior >(0), nullptr);
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace api
+}  // namespace google
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+// @@protoc_insertion_point(global_scope)
+#include "google/protobuf/port_undef.inc"
diff --git a/Firestore/Protos/cpp/google/api/field_behavior.pb.h b/Firestore/Protos/cpp/google/api/field_behavior.pb.h
new file mode 100644
index 00000000000..e04739e7ce7
--- /dev/null
+++ b/Firestore/Protos/cpp/google/api/field_behavior.pb.h
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/api/field_behavior.proto
+// Protobuf C++ Version: 4.25.1
+
+#ifndef GOOGLE_PROTOBUF_INCLUDED_google_2fapi_2ffield_5fbehavior_2eproto_2epb_2eh
+#define GOOGLE_PROTOBUF_INCLUDED_google_2fapi_2ffield_5fbehavior_2eproto_2epb_2eh
+
+#include <limits>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "google/protobuf/port_def.inc"
+#if PROTOBUF_VERSION < 4025000
+#error "This file was generated by a newer version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please update"
+#error "your headers."
+#endif  // PROTOBUF_VERSION
+
+#if 4025001 < PROTOBUF_MIN_PROTOC_VERSION
+#error "This file was generated by an older version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please"
+#error "regenerate this file with a newer version of protoc."
+#endif  // PROTOBUF_MIN_PROTOC_VERSION
+#include "google/protobuf/port_undef.inc"
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/arena.h"
+#include "google/protobuf/arenastring.h"
+#include "google/protobuf/generated_message_tctable_decl.h"
+#include "google/protobuf/generated_message_util.h"
+#include "google/protobuf/metadata_lite.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/repeated_field.h"  // IWYU pragma: export
+#include "google/protobuf/extension_set.h"  // IWYU pragma: export
+#include "google/protobuf/generated_enum_reflection.h"
+#include "google/protobuf/descriptor.pb.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+
+#define PROTOBUF_INTERNAL_EXPORT_google_2fapi_2ffield_5fbehavior_2eproto
+
+namespace google {
+namespace protobuf {
+namespace internal {
+class AnyMetadata;
+}  // namespace internal
+}  // namespace protobuf
+}  // namespace google
+
+// Internal implementation detail -- do not use these members.
+struct TableStruct_google_2fapi_2ffield_5fbehavior_2eproto {
+  static const ::uint32_t offsets[];
+};
+extern const ::google::protobuf::internal::DescriptorTable
+    descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto;
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+
+namespace google {
+namespace api {
+enum FieldBehavior : int {
+  FIELD_BEHAVIOR_UNSPECIFIED = 0,
+  OPTIONAL = 1,
+  REQUIRED = 2,
+  OUTPUT_ONLY = 3,
+  INPUT_ONLY = 4,
+  IMMUTABLE = 5,
+  UNORDERED_LIST = 6,
+  NON_EMPTY_DEFAULT = 7,
+  IDENTIFIER = 8,
+  FieldBehavior_INT_MIN_SENTINEL_DO_NOT_USE_ =
+      std::numeric_limits<::int32_t>::min(),
+  FieldBehavior_INT_MAX_SENTINEL_DO_NOT_USE_ =
+      std::numeric_limits<::int32_t>::max(),
+};
+
+bool FieldBehavior_IsValid(int value);
+extern const uint32_t FieldBehavior_internal_data_[];
+constexpr FieldBehavior FieldBehavior_MIN = static_cast<FieldBehavior>(0);
+constexpr FieldBehavior FieldBehavior_MAX = static_cast<FieldBehavior>(8);
+constexpr int FieldBehavior_ARRAYSIZE = 8 + 1;
+const ::google::protobuf::EnumDescriptor*
+FieldBehavior_descriptor();
+template <typename T>
+const std::string& FieldBehavior_Name(T value) {
+  static_assert(std::is_same<T, FieldBehavior>::value ||
+                    std::is_integral<T>::value,
+                "Incorrect type passed to FieldBehavior_Name().");
+  return FieldBehavior_Name(static_cast<FieldBehavior>(value));
+}
+template <>
+inline const std::string& FieldBehavior_Name(FieldBehavior value) {
+  return ::google::protobuf::internal::NameOfDenseEnum<FieldBehavior_descriptor,
+                                                 0, 8>(
+      static_cast<int>(value));
+}
+inline bool FieldBehavior_Parse(absl::string_view name, FieldBehavior* value) {
+  return ::google::protobuf::internal::ParseNamedEnum<FieldBehavior>(
+      FieldBehavior_descriptor(), name, value);
+}
+
+// ===================================================================
+
+
+
+// ===================================================================
+
+
+
+static const int kFieldBehaviorFieldNumber = 1052;
+extern ::google::protobuf::internal::ExtensionIdentifier< ::google::protobuf::FieldOptions,
+    ::google::protobuf::internal::RepeatedEnumTypeTraits< ::google::api::FieldBehavior, ::google::api::FieldBehavior_IsValid>, 14, false >
+  field_behavior;
+
+// ===================================================================
+
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif  // __GNUC__
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif  // __GNUC__
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace api
+}  // namespace google
+
+
+namespace google {
+namespace protobuf {
+
+template <>
+struct is_proto_enum<::google::api::FieldBehavior> : std::true_type {};
+template <>
+inline const EnumDescriptor* GetEnumDescriptor<::google::api::FieldBehavior>() {
+  return ::google::api::FieldBehavior_descriptor();
+}
+
+}  // namespace protobuf
+}  // namespace google
+
+// @@protoc_insertion_point(global_scope)
+
+#include "google/protobuf/port_undef.inc"
+
+#endif  // GOOGLE_PROTOBUF_INCLUDED_google_2fapi_2ffield_5fbehavior_2eproto_2epb_2eh
diff --git a/Firestore/Protos/cpp/google/api/http.pb.cc b/Firestore/Protos/cpp/google/api/http.pb.cc
index 3964f8fc33e..c6a9fa49c1b 100644
--- a/Firestore/Protos/cpp/google/api/http.pb.cc
+++ b/Firestore/Protos/cpp/google/api/http.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/api/http.pb.h b/Firestore/Protos/cpp/google/api/http.pb.h
index 54c6bad8167..bc1f7426a3c 100644
--- a/Firestore/Protos/cpp/google/api/http.pb.h
+++ b/Firestore/Protos/cpp/google/api/http.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/api/resource.pb.cc b/Firestore/Protos/cpp/google/api/resource.pb.cc
index fd34f4f0934..2ea1c7562ff 100644
--- a/Firestore/Protos/cpp/google/api/resource.pb.cc
+++ b/Firestore/Protos/cpp/google/api/resource.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/api/resource.pb.h b/Firestore/Protos/cpp/google/api/resource.pb.h
index 458c078fb57..de855a0a335 100644
--- a/Firestore/Protos/cpp/google/api/resource.pb.h
+++ b/Firestore/Protos/cpp/google/api/resource.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/admin/index.pb.cc b/Firestore/Protos/cpp/google/firestore/admin/index.pb.cc
index 9e7a2a53d6a..d0ee81c51aa 100644
--- a/Firestore/Protos/cpp/google/firestore/admin/index.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/admin/index.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/admin/index.pb.h b/Firestore/Protos/cpp/google/firestore/admin/index.pb.h
index 6095d8eba33..474abbd3b56 100644
--- a/Firestore/Protos/cpp/google/firestore/admin/index.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/admin/index.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.cc
index 2b6366af7fa..1302ce50dff 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.h b/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.h
index 26750c24e40..604f7d4d266 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/v1/aggregation_result.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.cc
index f3ad4ff4ae2..850d8b10da2 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.h b/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.h
index e4e2fa8331b..69d2b086157 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/v1/bloom_filter.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/common.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/common.pb.cc
index f3113c8ed9c..c92596182be 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/common.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/v1/common.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/common.pb.h b/Firestore/Protos/cpp/google/firestore/v1/common.pb.h
index 814ed5c9723..45e09440cc3 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/common.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/v1/common.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/document.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/document.pb.cc
index 3167a814ee4..8f299b1a166 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/document.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/v1/document.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -59,6 +59,41 @@ struct ArrayValueDefaultTypeInternal {
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
     PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ArrayValueDefaultTypeInternal _ArrayValue_default_instance_;
 
+inline constexpr Function::Impl_::Impl_(
+    ::_pbi::ConstantInitialized) noexcept
+      : args_{},
+        options_{},
+        name_(
+            &::google::protobuf::internal::fixed_address_empty_string,
+            ::_pbi::ConstantInitialized()),
+        _cached_size_{0} {}
+
+template <typename>
+PROTOBUF_CONSTEXPR Function::Function(::_pbi::ConstantInitialized)
+    : _impl_(::_pbi::ConstantInitialized()) {}
+struct FunctionDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR FunctionDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~FunctionDefaultTypeInternal() {}
+  union {
+    Function _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 FunctionDefaultTypeInternal _Function_default_instance_;
+      template <typename>
+PROTOBUF_CONSTEXPR Function_OptionsEntry_DoNotUse::Function_OptionsEntry_DoNotUse(::_pbi::ConstantInitialized) {}
+struct Function_OptionsEntry_DoNotUseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR Function_OptionsEntry_DoNotUseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~Function_OptionsEntry_DoNotUseDefaultTypeInternal() {}
+  union {
+    Function_OptionsEntry_DoNotUse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 Function_OptionsEntry_DoNotUseDefaultTypeInternal _Function_OptionsEntry_DoNotUse_default_instance_;
+
 inline constexpr MapValue::Impl_::Impl_(
     ::_pbi::ConstantInitialized) noexcept
       : fields_{},
@@ -90,6 +125,60 @@ struct MapValue_FieldsEntry_DoNotUseDefaultTypeInternal {
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
     PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 MapValue_FieldsEntry_DoNotUseDefaultTypeInternal _MapValue_FieldsEntry_DoNotUse_default_instance_;
 
+inline constexpr Pipeline::Impl_::Impl_(
+    ::_pbi::ConstantInitialized) noexcept
+      : stages_{},
+        _cached_size_{0} {}
+
+template <typename>
+PROTOBUF_CONSTEXPR Pipeline::Pipeline(::_pbi::ConstantInitialized)
+    : _impl_(::_pbi::ConstantInitialized()) {}
+struct PipelineDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR PipelineDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~PipelineDefaultTypeInternal() {}
+  union {
+    Pipeline _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 PipelineDefaultTypeInternal _Pipeline_default_instance_;
+
+inline constexpr Pipeline_Stage::Impl_::Impl_(
+    ::_pbi::ConstantInitialized) noexcept
+      : args_{},
+        options_{},
+        name_(
+            &::google::protobuf::internal::fixed_address_empty_string,
+            ::_pbi::ConstantInitialized()),
+        _cached_size_{0} {}
+
+template <typename>
+PROTOBUF_CONSTEXPR Pipeline_Stage::Pipeline_Stage(::_pbi::ConstantInitialized)
+    : _impl_(::_pbi::ConstantInitialized()) {}
+struct Pipeline_StageDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR Pipeline_StageDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~Pipeline_StageDefaultTypeInternal() {}
+  union {
+    Pipeline_Stage _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 Pipeline_StageDefaultTypeInternal _Pipeline_Stage_default_instance_;
+      template <typename>
+PROTOBUF_CONSTEXPR Pipeline_Stage_OptionsEntry_DoNotUse::Pipeline_Stage_OptionsEntry_DoNotUse(::_pbi::ConstantInitialized) {}
+struct Pipeline_Stage_OptionsEntry_DoNotUseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR Pipeline_Stage_OptionsEntry_DoNotUseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~Pipeline_Stage_OptionsEntry_DoNotUseDefaultTypeInternal() {}
+  union {
+    Pipeline_Stage_OptionsEntry_DoNotUse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 Pipeline_Stage_OptionsEntry_DoNotUseDefaultTypeInternal _Pipeline_Stage_OptionsEntry_DoNotUse_default_instance_;
+
 inline constexpr Value::Impl_::Impl_(
     ::_pbi::ConstantInitialized) noexcept
       : value_type_{},
@@ -148,7 +237,7 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
 }  // namespace v1
 }  // namespace firestore
 }  // namespace google
-static ::_pb::Metadata file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[6];
+static ::_pb::Metadata file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[11];
 static constexpr const ::_pb::EnumDescriptor**
     file_level_enum_descriptors_google_2ffirestore_2fv1_2fdocument_2eproto = nullptr;
 static constexpr const ::_pb::ServiceDescriptor**
@@ -202,6 +291,9 @@ const ::uint32_t TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto::offsets
     ::_pbi::kInvalidFieldOffsetTag,
     ::_pbi::kInvalidFieldOffsetTag,
     ::_pbi::kInvalidFieldOffsetTag,
+    ::_pbi::kInvalidFieldOffsetTag,
+    ::_pbi::kInvalidFieldOffsetTag,
+    ::_pbi::kInvalidFieldOffsetTag,
     PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Value, _impl_.value_type_),
     ~0u,  // no _has_bits_
     PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ArrayValue, _internal_metadata_),
@@ -233,6 +325,61 @@ const ::uint32_t TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto::offsets
     ~0u,  // no _split_
     ~0u,  // no sizeof(Split)
     PROTOBUF_FIELD_OFFSET(::google::firestore::v1::MapValue, _impl_.fields_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function_OptionsEntry_DoNotUse, _has_bits_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function_OptionsEntry_DoNotUse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function_OptionsEntry_DoNotUse, key_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function_OptionsEntry_DoNotUse, value_),
+    0,
+    1,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function, _impl_.name_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function, _impl_.args_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Function, _impl_.options_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage_OptionsEntry_DoNotUse, _has_bits_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage_OptionsEntry_DoNotUse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage_OptionsEntry_DoNotUse, key_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage_OptionsEntry_DoNotUse, value_),
+    0,
+    1,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage, _impl_.name_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage, _impl_.args_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline_Stage, _impl_.options_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::Pipeline, _impl_.stages_),
 };
 
 static const ::_pbi::MigrationSchema
@@ -240,9 +387,14 @@ static const ::_pbi::MigrationSchema
         {0, 10, -1, sizeof(::google::firestore::v1::Document_FieldsEntry_DoNotUse)},
         {12, 24, -1, sizeof(::google::firestore::v1::Document)},
         {28, -1, -1, sizeof(::google::firestore::v1::Value)},
-        {48, -1, -1, sizeof(::google::firestore::v1::ArrayValue)},
-        {57, 67, -1, sizeof(::google::firestore::v1::MapValue_FieldsEntry_DoNotUse)},
-        {69, -1, -1, sizeof(::google::firestore::v1::MapValue)},
+        {51, -1, -1, sizeof(::google::firestore::v1::ArrayValue)},
+        {60, 70, -1, sizeof(::google::firestore::v1::MapValue_FieldsEntry_DoNotUse)},
+        {72, -1, -1, sizeof(::google::firestore::v1::MapValue)},
+        {81, 91, -1, sizeof(::google::firestore::v1::Function_OptionsEntry_DoNotUse)},
+        {93, -1, -1, sizeof(::google::firestore::v1::Function)},
+        {104, 114, -1, sizeof(::google::firestore::v1::Pipeline_Stage_OptionsEntry_DoNotUse)},
+        {116, -1, -1, sizeof(::google::firestore::v1::Pipeline_Stage)},
+        {127, -1, -1, sizeof(::google::firestore::v1::Pipeline)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -252,42 +404,66 @@ static const ::_pb::Message* const file_default_instances[] = {
     &::google::firestore::v1::_ArrayValue_default_instance_._instance,
     &::google::firestore::v1::_MapValue_FieldsEntry_DoNotUse_default_instance_._instance,
     &::google::firestore::v1::_MapValue_default_instance_._instance,
+    &::google::firestore::v1::_Function_OptionsEntry_DoNotUse_default_instance_._instance,
+    &::google::firestore::v1::_Function_default_instance_._instance,
+    &::google::firestore::v1::_Pipeline_Stage_OptionsEntry_DoNotUse_default_instance_._instance,
+    &::google::firestore::v1::_Pipeline_Stage_default_instance_._instance,
+    &::google::firestore::v1::_Pipeline_default_instance_._instance,
 };
 const char descriptor_table_protodef_google_2ffirestore_2fv1_2fdocument_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
     "\n\"google/firestore/v1/document.proto\022\023go"
-    "ogle.firestore.v1\032\034google/protobuf/struc"
-    "t.proto\032\037google/protobuf/timestamp.proto"
-    "\032\030google/type/latlng.proto\"\200\002\n\010Document\022"
-    "\014\n\004name\030\001 \001(\t\0229\n\006fields\030\002 \003(\0132).google.f"
-    "irestore.v1.Document.FieldsEntry\022/\n\013crea"
-    "te_time\030\003 \001(\0132\032.google.protobuf.Timestam"
-    "p\022/\n\013update_time\030\004 \001(\0132\032.google.protobuf"
-    ".Timestamp\032I\n\013FieldsEntry\022\013\n\003key\030\001 \001(\t\022)"
-    "\n\005value\030\002 \001(\0132\032.google.firestore.v1.Valu"
-    "e:\0028\001\"\256\003\n\005Value\0220\n\nnull_value\030\013 \001(\0162\032.go"
-    "ogle.protobuf.NullValueH\000\022\027\n\rboolean_val"
-    "ue\030\001 \001(\010H\000\022\027\n\rinteger_value\030\002 \001(\003H\000\022\026\n\014d"
-    "ouble_value\030\003 \001(\001H\000\0225\n\017timestamp_value\030\n"
-    " \001(\0132\032.google.protobuf.TimestampH\000\022\026\n\014st"
-    "ring_value\030\021 \001(\tH\000\022\025\n\013bytes_value\030\022 \001(\014H"
-    "\000\022\031\n\017reference_value\030\005 \001(\tH\000\022.\n\017geo_poin"
-    "t_value\030\010 \001(\0132\023.google.type.LatLngH\000\0226\n\013"
-    "array_value\030\t \001(\0132\037.google.firestore.v1."
-    "ArrayValueH\000\0222\n\tmap_value\030\006 \001(\0132\035.google"
-    ".firestore.v1.MapValueH\000B\014\n\nvalue_type\"8"
-    "\n\nArrayValue\022*\n\006values\030\001 \003(\0132\032.google.fi"
-    "restore.v1.Value\"\220\001\n\010MapValue\0229\n\006fields\030"
-    "\001 \003(\0132).google.firestore.v1.MapValue.Fie"
-    "ldsEntry\032I\n\013FieldsEntry\022\013\n\003key\030\001 \001(\t\022)\n\005"
-    "value\030\002 \001(\0132\032.google.firestore.v1.Value:"
-    "\0028\001B\261\001\n\027com.google.firestore.v1B\rDocumen"
-    "tProtoP\001Z<google.golang.org/genproto/goo"
-    "gleapis/firestore/v1;firestore\242\002\004GCFS\252\002\036"
-    "Google.Cloud.Firestore.V1Beta1\312\002\036Google\\"
-    "Cloud\\Firestore\\V1beta1b\006proto3"
+    "ogle.firestore.v1\032\037google/api/field_beha"
+    "vior.proto\032\034google/protobuf/struct.proto"
+    "\032\037google/protobuf/timestamp.proto\032\030googl"
+    "e/type/latlng.proto\"\200\002\n\010Document\022\014\n\004name"
+    "\030\001 \001(\t\0229\n\006fields\030\002 \003(\0132).google.firestor"
+    "e.v1.Document.FieldsEntry\022/\n\013create_time"
+    "\030\003 \001(\0132\032.google.protobuf.Timestamp\022/\n\013up"
+    "date_time\030\004 \001(\0132\032.google.protobuf.Timest"
+    "amp\032I\n\013FieldsEntry\022\013\n\003key\030\001 \001(\t\022)\n\005value"
+    "\030\002 \001(\0132\032.google.firestore.v1.Value:\0028\001\"\301"
+    "\004\n\005Value\0220\n\nnull_value\030\013 \001(\0162\032.google.pr"
+    "otobuf.NullValueH\000\022\027\n\rboolean_value\030\001 \001("
+    "\010H\000\022\027\n\rinteger_value\030\002 \001(\003H\000\022\026\n\014double_v"
+    "alue\030\003 \001(\001H\000\0225\n\017timestamp_value\030\n \001(\0132\032."
+    "google.protobuf.TimestampH\000\022\026\n\014string_va"
+    "lue\030\021 \001(\tH\000\022\025\n\013bytes_value\030\022 \001(\014H\000\022\031\n\017re"
+    "ference_value\030\005 \001(\tH\000\022.\n\017geo_point_value"
+    "\030\010 \001(\0132\023.google.type.LatLngH\000\0226\n\013array_v"
+    "alue\030\t \001(\0132\037.google.firestore.v1.ArrayVa"
+    "lueH\000\0222\n\tmap_value\030\006 \001(\0132\035.google.firest"
+    "ore.v1.MapValueH\000\022\037\n\025field_reference_val"
+    "ue\030\023 \001(\tH\000\0227\n\016function_value\030\024 \001(\0132\035.goo"
+    "gle.firestore.v1.FunctionH\000\0227\n\016pipeline_"
+    "value\030\025 \001(\0132\035.google.firestore.v1.Pipeli"
+    "neH\000B\014\n\nvalue_type\"8\n\nArrayValue\022*\n\006valu"
+    "es\030\001 \003(\0132\032.google.firestore.v1.Value\"\220\001\n"
+    "\010MapValue\0229\n\006fields\030\001 \003(\0132).google.fires"
+    "tore.v1.MapValue.FieldsEntry\032I\n\013FieldsEn"
+    "try\022\013\n\003key\030\001 \001(\t\022)\n\005value\030\002 \001(\0132\032.google"
+    ".firestore.v1.Value:\0028\001\"\332\001\n\010Function\022\021\n\004"
+    "name\030\001 \001(\tB\003\340A\002\022-\n\004args\030\002 \003(\0132\032.google.f"
+    "irestore.v1.ValueB\003\340A\001\022@\n\007options\030\003 \003(\0132"
+    "*.google.firestore.v1.Function.OptionsEn"
+    "tryB\003\340A\001\032J\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022)\n"
+    "\005value\030\002 \001(\0132\032.google.firestore.v1.Value"
+    ":\0028\001\"\244\002\n\010Pipeline\0228\n\006stages\030\001 \003(\0132#.goog"
+    "le.firestore.v1.Pipeline.StageB\003\340A\002\032\335\001\n\005"
+    "Stage\022\021\n\004name\030\001 \001(\tB\003\340A\002\022-\n\004args\030\002 \003(\0132\032"
+    ".google.firestore.v1.ValueB\003\340A\001\022F\n\007optio"
+    "ns\030\003 \003(\01320.google.firestore.v1.Pipeline."
+    "Stage.OptionsEntryB\003\340A\001\032J\n\014OptionsEntry\022"
+    "\013\n\003key\030\001 \001(\t\022)\n\005value\030\002 \001(\0132\032.google.fir"
+    "estore.v1.Value:\0028\001B\305\001\n\027com.google.fires"
+    "tore.v1B\rDocumentProtoP\001Z;cloud.google.c"
+    "om/go/firestore/apiv1/firestorepb;firest"
+    "orepb\242\002\004GCFS\252\002\031Google.Cloud.Firestore.V1"
+    "\312\002\031Google\\Cloud\\Firestore\\V1\352\002\034Google::C"
+    "loud::Firestore::V1b\006proto3"
 };
-static const ::_pbi::DescriptorTable* const descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_deps[3] =
+static const ::_pbi::DescriptorTable* const descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_deps[4] =
     {
+        &::descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto,
         &::descriptor_table_google_2fprotobuf_2fstruct_2eproto,
         &::descriptor_table_google_2fprotobuf_2ftimestamp_2eproto,
         &::descriptor_table_google_2ftype_2flatlng_2eproto,
@@ -296,13 +472,13 @@ static ::absl::once_flag descriptor_table_google_2ffirestore_2fv1_2fdocument_2ep
 const ::_pbi::DescriptorTable descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto = {
     false,
     false,
-    1231,
+    1947,
     descriptor_table_protodef_google_2ffirestore_2fv1_2fdocument_2eproto,
     "google/firestore/v1/document.proto",
     &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_once,
     descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_deps,
-    3,
-    6,
+    4,
+    11,
     schemas,
     file_default_instances,
     TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto::offsets,
@@ -706,6 +882,8 @@ class Value::_Internal {
   static const ::google::type::LatLng& geo_point_value(const Value* msg);
   static const ::google::firestore::v1::ArrayValue& array_value(const Value* msg);
   static const ::google::firestore::v1::MapValue& map_value(const Value* msg);
+  static const ::google::firestore::v1::Function& function_value(const Value* msg);
+  static const ::google::firestore::v1::Pipeline& pipeline_value(const Value* msg);
 };
 
 const ::google::protobuf::Timestamp& Value::_Internal::timestamp_value(const Value* msg) {
@@ -720,6 +898,12 @@ const ::google::firestore::v1::ArrayValue& Value::_Internal::array_value(const V
 const ::google::firestore::v1::MapValue& Value::_Internal::map_value(const Value* msg) {
   return *msg->_impl_.value_type_.map_value_;
 }
+const ::google::firestore::v1::Function& Value::_Internal::function_value(const Value* msg) {
+  return *msg->_impl_.value_type_.function_value_;
+}
+const ::google::firestore::v1::Pipeline& Value::_Internal::pipeline_value(const Value* msg) {
+  return *msg->_impl_.value_type_.pipeline_value_;
+}
 void Value::set_allocated_timestamp_value(::google::protobuf::Timestamp* timestamp_value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   clear_value_type();
@@ -790,6 +974,32 @@ void Value::set_allocated_map_value(::google::firestore::v1::MapValue* map_value
   }
   // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.Value.map_value)
 }
+void Value::set_allocated_function_value(::google::firestore::v1::Function* function_value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  clear_value_type();
+  if (function_value) {
+    ::google::protobuf::Arena* submessage_arena = function_value->GetArena();
+    if (message_arena != submessage_arena) {
+      function_value = ::google::protobuf::internal::GetOwnedMessage(message_arena, function_value, submessage_arena);
+    }
+    set_has_function_value();
+    _impl_.value_type_.function_value_ = function_value;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.Value.function_value)
+}
+void Value::set_allocated_pipeline_value(::google::firestore::v1::Pipeline* pipeline_value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  clear_value_type();
+  if (pipeline_value) {
+    ::google::protobuf::Arena* submessage_arena = pipeline_value->GetArena();
+    if (message_arena != submessage_arena) {
+      pipeline_value = ::google::protobuf::internal::GetOwnedMessage(message_arena, pipeline_value, submessage_arena);
+    }
+    set_has_pipeline_value();
+    _impl_.value_type_.pipeline_value_ = pipeline_value;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.Value.pipeline_value)
+}
 Value::Value(::google::protobuf::Arena* arena)
     : ::google::protobuf::Message(arena) {
   SharedCtor(arena);
@@ -847,6 +1057,15 @@ Value::Value(
       case kMapValue:
         _impl_.value_type_.map_value_ = CreateMaybeMessage<::google::firestore::v1::MapValue>(arena, *from._impl_.value_type_.map_value_);
         break;
+      case kFieldReferenceValue:
+        new (&_impl_.value_type_.field_reference_value_) decltype(_impl_.value_type_.field_reference_value_){arena, from._impl_.value_type_.field_reference_value_};
+        break;
+      case kFunctionValue:
+        _impl_.value_type_.function_value_ = CreateMaybeMessage<::google::firestore::v1::Function>(arena, *from._impl_.value_type_.function_value_);
+        break;
+      case kPipelineValue:
+        _impl_.value_type_.pipeline_value_ = CreateMaybeMessage<::google::firestore::v1::Pipeline>(arena, *from._impl_.value_type_.pipeline_value_);
+        break;
   }
 
   // @@protoc_insertion_point(copy_constructor:google.firestore.v1.Value)
@@ -930,6 +1149,22 @@ void Value::clear_value_type() {
       }
       break;
     }
+    case kFieldReferenceValue: {
+      _impl_.value_type_.field_reference_value_.Destroy();
+      break;
+    }
+    case kFunctionValue: {
+      if (GetArena() == nullptr) {
+        delete _impl_.value_type_.function_value_;
+      }
+      break;
+    }
+    case kPipelineValue: {
+      if (GetArena() == nullptr) {
+        delete _impl_.value_type_.pipeline_value_;
+      }
+      break;
+    }
     case VALUE_TYPE_NOT_SET: {
       break;
     }
@@ -957,16 +1192,16 @@ const char* Value::_InternalParse(
 
 
 PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
-const ::_pbi::TcParseTable<0, 11, 4, 69, 2> Value::_table_ = {
+const ::_pbi::TcParseTable<0, 14, 6, 90, 2> Value::_table_ = {
   {
     0,  // no _has_bits_
     0, // no _extensions_
-    18, 0,  // max_field_number, fast_idx_mask
+    21, 0,  // max_field_number, fast_idx_mask
     offsetof(decltype(_table_), field_lookup_table),
-    4294768712,  // skipmap
+    4292933704,  // skipmap
     offsetof(decltype(_table_), field_entries),
-    11,  // num_field_entries
-    4,  // num_aux_entries
+    14,  // num_field_entries
+    6,  // num_aux_entries
     offsetof(decltype(_table_), aux_entries),
     &_Value_default_instance_._instance,
     ::_pbi::TcParser::GenericFallback,  // fallback
@@ -1008,16 +1243,28 @@ const ::_pbi::TcParseTable<0, 11, 4, 69, 2> Value::_table_ = {
     // bytes bytes_value = 18;
     {PROTOBUF_FIELD_OFFSET(Value, _impl_.value_type_.bytes_value_), _Internal::kOneofCaseOffset + 0, 0,
     (0 | ::_fl::kFcOneof | ::_fl::kBytes | ::_fl::kRepAString)},
+    // string field_reference_value = 19;
+    {PROTOBUF_FIELD_OFFSET(Value, _impl_.value_type_.field_reference_value_), _Internal::kOneofCaseOffset + 0, 0,
+    (0 | ::_fl::kFcOneof | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .google.firestore.v1.Function function_value = 20;
+    {PROTOBUF_FIELD_OFFSET(Value, _impl_.value_type_.function_value_), _Internal::kOneofCaseOffset + 0, 4,
+    (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
+    // .google.firestore.v1.Pipeline pipeline_value = 21;
+    {PROTOBUF_FIELD_OFFSET(Value, _impl_.value_type_.pipeline_value_), _Internal::kOneofCaseOffset + 0, 5,
+    (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
   }}, {{
     {::_pbi::TcParser::GetTable<::google::firestore::v1::MapValue>()},
     {::_pbi::TcParser::GetTable<::google::type::LatLng>()},
     {::_pbi::TcParser::GetTable<::google::firestore::v1::ArrayValue>()},
     {::_pbi::TcParser::GetTable<::google::protobuf::Timestamp>()},
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::Function>()},
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::Pipeline>()},
   }}, {{
-    "\31\0\0\0\17\0\0\0\0\0\14\0\0\0\0\0"
+    "\31\0\0\0\17\0\0\0\0\0\14\0\25\0\0\0"
     "google.firestore.v1.Value"
     "reference_value"
     "string_value"
+    "field_reference_value"
   }},
 };
 
@@ -1096,6 +1343,25 @@ ::uint8_t* Value::_InternalSerialize(
       target = stream->WriteBytesMaybeAliased(18, _s, target);
       break;
     }
+    case kFieldReferenceValue: {
+      const std::string& _s = this->_internal_field_reference_value();
+      ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+          _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.Value.field_reference_value");
+      target = stream->WriteStringMaybeAliased(19, _s, target);
+      break;
+    }
+    case kFunctionValue: {
+      target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+          20, _Internal::function_value(this),
+          _Internal::function_value(this).GetCachedSize(), target, stream);
+      break;
+    }
+    case kPipelineValue: {
+      target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+          21, _Internal::pipeline_value(this),
+          _Internal::pipeline_value(this).GetCachedSize(), target, stream);
+      break;
+    }
     default:
       break;
   }
@@ -1181,6 +1447,24 @@ ::size_t Value::ByteSizeLong() const {
           1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.value_type_.map_value_);
       break;
     }
+    // string field_reference_value = 19;
+    case kFieldReferenceValue: {
+      total_size += 2 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                      this->_internal_field_reference_value());
+      break;
+    }
+    // .google.firestore.v1.Function function_value = 20;
+    case kFunctionValue: {
+      total_size +=
+          2 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.value_type_.function_value_);
+      break;
+    }
+    // .google.firestore.v1.Pipeline pipeline_value = 21;
+    case kPipelineValue: {
+      total_size +=
+          2 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.value_type_.pipeline_value_);
+      break;
+    }
     case VALUE_TYPE_NOT_SET: {
       break;
     }
@@ -1253,6 +1537,20 @@ void Value::MergeImpl(::google::protobuf::Message& to_msg, const ::google::proto
           from._internal_map_value());
       break;
     }
+    case kFieldReferenceValue: {
+      _this->_internal_set_field_reference_value(from._internal_field_reference_value());
+      break;
+    }
+    case kFunctionValue: {
+      _this->_internal_mutable_function_value()->::google::firestore::v1::Function::MergeFrom(
+          from._internal_function_value());
+      break;
+    }
+    case kPipelineValue: {
+      _this->_internal_mutable_pipeline_value()->::google::firestore::v1::Pipeline::MergeFrom(
+          from._internal_pipeline_value());
+      break;
+    }
     case VALUE_TYPE_NOT_SET: {
       break;
     }
@@ -1686,6 +1984,737 @@ ::google::protobuf::Metadata MapValue::GetMetadata() const {
       &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_once,
       file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[5]);
 }
+// ===================================================================
+
+Function_OptionsEntry_DoNotUse::Function_OptionsEntry_DoNotUse() {}
+Function_OptionsEntry_DoNotUse::Function_OptionsEntry_DoNotUse(::google::protobuf::Arena* arena)
+    : SuperType(arena) {}
+::google::protobuf::Metadata Function_OptionsEntry_DoNotUse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[6]);
+}
+// ===================================================================
+
+class Function::_Internal {
+ public:
+};
+
+Function::Function(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.Function)
+}
+inline PROTOBUF_NDEBUG_INLINE Function::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
+    const Impl_& from)
+      : args_{visibility, arena, from.args_},
+        options_{visibility, arena, from.options_},
+        name_(arena, from.name_),
+        _cached_size_{0} {}
+
+Function::Function(
+    ::google::protobuf::Arena* arena,
+    const Function& from)
+    : ::google::protobuf::Message(arena) {
+  Function* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
+
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.Function)
+}
+inline PROTOBUF_NDEBUG_INLINE Function::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility,
+    ::google::protobuf::Arena* arena)
+      : args_{visibility, arena},
+        options_{visibility, arena},
+        name_(arena),
+        _cached_size_{0} {}
+
+inline void Function::SharedCtor(::_pb::Arena* arena) {
+  new (&_impl_) Impl_(internal_visibility(), arena);
+}
+Function::~Function() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.Function)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Function::SharedDtor() {
+  ABSL_DCHECK(GetArena() == nullptr);
+  _impl_.name_.Destroy();
+  _impl_.~Impl_();
+}
+
+PROTOBUF_NOINLINE void Function::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.Function)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.args_.Clear();
+  _impl_.options_.Clear();
+  _impl_.name_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Function::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 3, 3, 48, 2> Function::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    3, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967288,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    3,  // num_field_entries
+    3,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_Function_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+    {::_pbi::TcParser::FastMtR1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(Function, _impl_.args_)}},
+    // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Function, _impl_.name_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+    {PROTOBUF_FIELD_OFFSET(Function, _impl_.name_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+    {PROTOBUF_FIELD_OFFSET(Function, _impl_.args_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+    // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+    {PROTOBUF_FIELD_OFFSET(Function, _impl_.options_), 0, 1,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMap)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::Value>()},
+    {::_pbi::TcParser::GetMapAuxInfo<
+        decltype(Function()._impl_.options_)>(
+        1, 0, 0, 9,
+        11)},
+    {::_pbi::TcParser::CreateInArenaStorageCb<::google::firestore::v1::Value>},
+  }}, {{
+    "\34\4\0\7\0\0\0\0"
+    "google.firestore.v1.Function"
+    "name"
+    "options"
+  }},
+};
+
+::uint8_t* Function::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.Function)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.Function.name");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_args_size()); i < n; i++) {
+    const auto& repfield = this->_internal_args().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(2, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+  if (!_internal_options().empty()) {
+    using MapType = ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>;
+    using WireHelper = _pbi::MapEntryFuncs<std::string, ::google::firestore::v1::Value,
+                                   _pbi::WireFormatLite::TYPE_STRING,
+                                   _pbi::WireFormatLite::TYPE_MESSAGE>;
+    const auto& field = _internal_options();
+
+    if (stream->IsSerializationDeterministic() && field.size() > 1) {
+      for (const auto& entry : ::google::protobuf::internal::MapSorterPtr<MapType>(field)) {
+        target = WireHelper::InternalSerialize(
+            3, entry.first, entry.second, target, stream);
+        ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+            entry.first.data(), static_cast<int>(entry.first.length()),
+ ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.Function.options");
+      }
+    } else {
+      for (const auto& entry : field) {
+        target = WireHelper::InternalSerialize(
+            3, entry.first, entry.second, target, stream);
+        ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+            entry.first.data(), static_cast<int>(entry.first.length()),
+ ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.Function.options");
+      }
+    }
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.Function)
+  return target;
+}
+
+::size_t Function::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.Function)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+  total_size += 1UL * this->_internal_args_size();
+  for (const auto& msg : this->_internal_args()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_options_size());
+  for (const auto& entry : _internal_options()) {
+    total_size += _pbi::MapEntryFuncs<std::string, ::google::firestore::v1::Value,
+                                   _pbi::WireFormatLite::TYPE_STRING,
+                                   _pbi::WireFormatLite::TYPE_MESSAGE>::ByteSizeLong(entry.first, entry.second);
+  }
+  // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Function::_class_data_ = {
+    Function::MergeImpl,
+    nullptr,  // OnDemandRegisterArenaDtor
+};
+const ::google::protobuf::Message::ClassData* Function::GetClassData() const {
+  return &_class_data_;
+}
+
+void Function::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Function*>(&to_msg);
+  auto& from = static_cast<const Function&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.Function)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_args()->MergeFrom(
+      from._internal_args());
+  _this->_impl_.options_.MergeFrom(from._impl_.options_);
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Function::CopyFrom(const Function& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.Function)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Function::IsInitialized() const {
+  return true;
+}
+
+::_pbi::CachedSize* Function::AccessCachedSize() const {
+  return &_impl_._cached_size_;
+}
+void Function::InternalSwap(Function* PROTOBUF_RESTRICT other) {
+  using std::swap;
+  auto* arena = GetArena();
+  ABSL_DCHECK_EQ(arena, other->GetArena());
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.args_.InternalSwap(&other->_impl_.args_);
+  _impl_.options_.InternalSwap(&other->_impl_.options_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, &other->_impl_.name_, arena);
+}
+
+::google::protobuf::Metadata Function::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[7]);
+}
+// ===================================================================
+
+Pipeline_Stage_OptionsEntry_DoNotUse::Pipeline_Stage_OptionsEntry_DoNotUse() {}
+Pipeline_Stage_OptionsEntry_DoNotUse::Pipeline_Stage_OptionsEntry_DoNotUse(::google::protobuf::Arena* arena)
+    : SuperType(arena) {}
+::google::protobuf::Metadata Pipeline_Stage_OptionsEntry_DoNotUse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[8]);
+}
+// ===================================================================
+
+class Pipeline_Stage::_Internal {
+ public:
+};
+
+Pipeline_Stage::Pipeline_Stage(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.Pipeline.Stage)
+}
+inline PROTOBUF_NDEBUG_INLINE Pipeline_Stage::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
+    const Impl_& from)
+      : args_{visibility, arena, from.args_},
+        options_{visibility, arena, from.options_},
+        name_(arena, from.name_),
+        _cached_size_{0} {}
+
+Pipeline_Stage::Pipeline_Stage(
+    ::google::protobuf::Arena* arena,
+    const Pipeline_Stage& from)
+    : ::google::protobuf::Message(arena) {
+  Pipeline_Stage* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
+
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.Pipeline.Stage)
+}
+inline PROTOBUF_NDEBUG_INLINE Pipeline_Stage::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility,
+    ::google::protobuf::Arena* arena)
+      : args_{visibility, arena},
+        options_{visibility, arena},
+        name_(arena),
+        _cached_size_{0} {}
+
+inline void Pipeline_Stage::SharedCtor(::_pb::Arena* arena) {
+  new (&_impl_) Impl_(internal_visibility(), arena);
+}
+Pipeline_Stage::~Pipeline_Stage() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.Pipeline.Stage)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Pipeline_Stage::SharedDtor() {
+  ABSL_DCHECK(GetArena() == nullptr);
+  _impl_.name_.Destroy();
+  _impl_.~Impl_();
+}
+
+PROTOBUF_NOINLINE void Pipeline_Stage::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.Pipeline.Stage)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.args_.Clear();
+  _impl_.options_.Clear();
+  _impl_.name_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Pipeline_Stage::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 3, 3, 54, 2> Pipeline_Stage::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    3, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967288,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    3,  // num_field_entries
+    3,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_Pipeline_Stage_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+    {::_pbi::TcParser::FastMtR1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(Pipeline_Stage, _impl_.args_)}},
+    // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Pipeline_Stage, _impl_.name_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+    {PROTOBUF_FIELD_OFFSET(Pipeline_Stage, _impl_.name_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+    {PROTOBUF_FIELD_OFFSET(Pipeline_Stage, _impl_.args_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+    // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+    {PROTOBUF_FIELD_OFFSET(Pipeline_Stage, _impl_.options_), 0, 1,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMap)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::Value>()},
+    {::_pbi::TcParser::GetMapAuxInfo<
+        decltype(Pipeline_Stage()._impl_.options_)>(
+        1, 0, 0, 9,
+        11)},
+    {::_pbi::TcParser::CreateInArenaStorageCb<::google::firestore::v1::Value>},
+  }}, {{
+    "\42\4\0\7\0\0\0\0"
+    "google.firestore.v1.Pipeline.Stage"
+    "name"
+    "options"
+  }},
+};
+
+::uint8_t* Pipeline_Stage::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.Pipeline.Stage)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.Pipeline.Stage.name");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_args_size()); i < n; i++) {
+    const auto& repfield = this->_internal_args().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(2, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+  if (!_internal_options().empty()) {
+    using MapType = ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>;
+    using WireHelper = _pbi::MapEntryFuncs<std::string, ::google::firestore::v1::Value,
+                                   _pbi::WireFormatLite::TYPE_STRING,
+                                   _pbi::WireFormatLite::TYPE_MESSAGE>;
+    const auto& field = _internal_options();
+
+    if (stream->IsSerializationDeterministic() && field.size() > 1) {
+      for (const auto& entry : ::google::protobuf::internal::MapSorterPtr<MapType>(field)) {
+        target = WireHelper::InternalSerialize(
+            3, entry.first, entry.second, target, stream);
+        ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+            entry.first.data(), static_cast<int>(entry.first.length()),
+ ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.Pipeline.Stage.options");
+      }
+    } else {
+      for (const auto& entry : field) {
+        target = WireHelper::InternalSerialize(
+            3, entry.first, entry.second, target, stream);
+        ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+            entry.first.data(), static_cast<int>(entry.first.length()),
+ ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.Pipeline.Stage.options");
+      }
+    }
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.Pipeline.Stage)
+  return target;
+}
+
+::size_t Pipeline_Stage::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.Pipeline.Stage)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+  total_size += 1UL * this->_internal_args_size();
+  for (const auto& msg : this->_internal_args()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_options_size());
+  for (const auto& entry : _internal_options()) {
+    total_size += _pbi::MapEntryFuncs<std::string, ::google::firestore::v1::Value,
+                                   _pbi::WireFormatLite::TYPE_STRING,
+                                   _pbi::WireFormatLite::TYPE_MESSAGE>::ByteSizeLong(entry.first, entry.second);
+  }
+  // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Pipeline_Stage::_class_data_ = {
+    Pipeline_Stage::MergeImpl,
+    nullptr,  // OnDemandRegisterArenaDtor
+};
+const ::google::protobuf::Message::ClassData* Pipeline_Stage::GetClassData() const {
+  return &_class_data_;
+}
+
+void Pipeline_Stage::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Pipeline_Stage*>(&to_msg);
+  auto& from = static_cast<const Pipeline_Stage&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.Pipeline.Stage)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_args()->MergeFrom(
+      from._internal_args());
+  _this->_impl_.options_.MergeFrom(from._impl_.options_);
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Pipeline_Stage::CopyFrom(const Pipeline_Stage& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.Pipeline.Stage)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Pipeline_Stage::IsInitialized() const {
+  return true;
+}
+
+::_pbi::CachedSize* Pipeline_Stage::AccessCachedSize() const {
+  return &_impl_._cached_size_;
+}
+void Pipeline_Stage::InternalSwap(Pipeline_Stage* PROTOBUF_RESTRICT other) {
+  using std::swap;
+  auto* arena = GetArena();
+  ABSL_DCHECK_EQ(arena, other->GetArena());
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.args_.InternalSwap(&other->_impl_.args_);
+  _impl_.options_.InternalSwap(&other->_impl_.options_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, &other->_impl_.name_, arena);
+}
+
+::google::protobuf::Metadata Pipeline_Stage::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[9]);
+}
+// ===================================================================
+
+class Pipeline::_Internal {
+ public:
+};
+
+Pipeline::Pipeline(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.Pipeline)
+}
+inline PROTOBUF_NDEBUG_INLINE Pipeline::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
+    const Impl_& from)
+      : stages_{visibility, arena, from.stages_},
+        _cached_size_{0} {}
+
+Pipeline::Pipeline(
+    ::google::protobuf::Arena* arena,
+    const Pipeline& from)
+    : ::google::protobuf::Message(arena) {
+  Pipeline* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
+
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.Pipeline)
+}
+inline PROTOBUF_NDEBUG_INLINE Pipeline::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility,
+    ::google::protobuf::Arena* arena)
+      : stages_{visibility, arena},
+        _cached_size_{0} {}
+
+inline void Pipeline::SharedCtor(::_pb::Arena* arena) {
+  new (&_impl_) Impl_(internal_visibility(), arena);
+}
+Pipeline::~Pipeline() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.Pipeline)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Pipeline::SharedDtor() {
+  ABSL_DCHECK(GetArena() == nullptr);
+  _impl_.~Impl_();
+}
+
+PROTOBUF_NOINLINE void Pipeline::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.Pipeline)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.stages_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Pipeline::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> Pipeline::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_Pipeline_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .google.firestore.v1.Pipeline.Stage stages = 1 [(.google.api.field_behavior) = REQUIRED];
+    {::_pbi::TcParser::FastMtR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Pipeline, _impl_.stages_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated .google.firestore.v1.Pipeline.Stage stages = 1 [(.google.api.field_behavior) = REQUIRED];
+    {PROTOBUF_FIELD_OFFSET(Pipeline, _impl_.stages_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::Pipeline_Stage>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* Pipeline::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.Pipeline)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated .google.firestore.v1.Pipeline.Stage stages = 1 [(.google.api.field_behavior) = REQUIRED];
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_stages_size()); i < n; i++) {
+    const auto& repfield = this->_internal_stages().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(1, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.Pipeline)
+  return target;
+}
+
+::size_t Pipeline::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.Pipeline)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .google.firestore.v1.Pipeline.Stage stages = 1 [(.google.api.field_behavior) = REQUIRED];
+  total_size += 1UL * this->_internal_stages_size();
+  for (const auto& msg : this->_internal_stages()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Pipeline::_class_data_ = {
+    Pipeline::MergeImpl,
+    nullptr,  // OnDemandRegisterArenaDtor
+};
+const ::google::protobuf::Message::ClassData* Pipeline::GetClassData() const {
+  return &_class_data_;
+}
+
+void Pipeline::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Pipeline*>(&to_msg);
+  auto& from = static_cast<const Pipeline&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.Pipeline)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_stages()->MergeFrom(
+      from._internal_stages());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Pipeline::CopyFrom(const Pipeline& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.Pipeline)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Pipeline::IsInitialized() const {
+  return true;
+}
+
+::_pbi::CachedSize* Pipeline::AccessCachedSize() const {
+  return &_impl_._cached_size_;
+}
+void Pipeline::InternalSwap(Pipeline* PROTOBUF_RESTRICT other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.stages_.InternalSwap(&other->_impl_.stages_);
+}
+
+::google::protobuf::Metadata Pipeline::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fdocument_2eproto[10]);
+}
 // @@protoc_insertion_point(namespace_scope)
 }  // namespace v1
 }  // namespace firestore
diff --git a/Firestore/Protos/cpp/google/firestore/v1/document.pb.h b/Firestore/Protos/cpp/google/firestore/v1/document.pb.h
index 440f2d29ffc..9e1fabdf0a3 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/document.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/v1/document.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,6 +53,7 @@
 #include "google/protobuf/map_entry.h"
 #include "google/protobuf/map_field_inl.h"
 #include "google/protobuf/unknown_field_set.h"
+#include "google/api/field_behavior.pb.h"
 #include "google/protobuf/struct.pb.h"
 #include "google/protobuf/timestamp.pb.h"
 #include "google/type/latlng.pb.h"
@@ -89,12 +90,27 @@ extern DocumentDefaultTypeInternal _Document_default_instance_;
 class Document_FieldsEntry_DoNotUse;
 struct Document_FieldsEntry_DoNotUseDefaultTypeInternal;
 extern Document_FieldsEntry_DoNotUseDefaultTypeInternal _Document_FieldsEntry_DoNotUse_default_instance_;
+class Function;
+struct FunctionDefaultTypeInternal;
+extern FunctionDefaultTypeInternal _Function_default_instance_;
+class Function_OptionsEntry_DoNotUse;
+struct Function_OptionsEntry_DoNotUseDefaultTypeInternal;
+extern Function_OptionsEntry_DoNotUseDefaultTypeInternal _Function_OptionsEntry_DoNotUse_default_instance_;
 class MapValue;
 struct MapValueDefaultTypeInternal;
 extern MapValueDefaultTypeInternal _MapValue_default_instance_;
 class MapValue_FieldsEntry_DoNotUse;
 struct MapValue_FieldsEntry_DoNotUseDefaultTypeInternal;
 extern MapValue_FieldsEntry_DoNotUseDefaultTypeInternal _MapValue_FieldsEntry_DoNotUse_default_instance_;
+class Pipeline;
+struct PipelineDefaultTypeInternal;
+extern PipelineDefaultTypeInternal _Pipeline_default_instance_;
+class Pipeline_Stage;
+struct Pipeline_StageDefaultTypeInternal;
+extern Pipeline_StageDefaultTypeInternal _Pipeline_Stage_default_instance_;
+class Pipeline_Stage_OptionsEntry_DoNotUse;
+struct Pipeline_Stage_OptionsEntry_DoNotUseDefaultTypeInternal;
+extern Pipeline_Stage_OptionsEntry_DoNotUseDefaultTypeInternal _Pipeline_Stage_OptionsEntry_DoNotUse_default_instance_;
 class Value;
 struct ValueDefaultTypeInternal;
 extern ValueDefaultTypeInternal _Value_default_instance_;
@@ -296,6 +312,256 @@ class ArrayValue final :
   friend struct ::TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto;
 };// -------------------------------------------------------------------
 
+class Function final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Function) */ {
+ public:
+  inline Function() : Function(nullptr) {}
+  ~Function() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Function(::google::protobuf::internal::ConstantInitialized);
+
+  inline Function(const Function& from)
+      : Function(nullptr, from) {}
+  Function(Function&& from) noexcept
+    : Function() {
+    *this = ::std::move(from);
+  }
+
+  inline Function& operator=(const Function& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Function& operator=(Function&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetArena() == from.GetArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields()
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Function& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Function* internal_default_instance() {
+    return reinterpret_cast<const Function*>(
+               &_Function_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    7;
+
+  friend void swap(Function& a, Function& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Function* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() != nullptr &&
+        GetArena() == other->GetArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() == other->GetArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Function* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetArena() == other->GetArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Function* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Function>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Function& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Function& from) {
+    Function::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const { return _impl_._cached_size_.Get(); }
+
+  private:
+  ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void InternalSwap(Function* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "google.firestore.v1.Function";
+  }
+  protected:
+  explicit Function(::google::protobuf::Arena* arena);
+  Function(::google::protobuf::Arena* arena, const Function& from);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kArgsFieldNumber = 2,
+    kOptionsFieldNumber = 3,
+    kNameFieldNumber = 1,
+  };
+  // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+  int args_size() const;
+  private:
+  int _internal_args_size() const;
+
+  public:
+  void clear_args() ;
+  ::google::firestore::v1::Value* mutable_args(int index);
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Value >*
+      mutable_args();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>& _internal_args() const;
+  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>* _internal_mutable_args();
+  public:
+  const ::google::firestore::v1::Value& args(int index) const;
+  ::google::firestore::v1::Value* add_args();
+  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Value >&
+      args() const;
+  // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+  int options_size() const;
+  private:
+  int _internal_options_size() const;
+
+  public:
+  void clear_options() ;
+  const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& options() const;
+  ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* mutable_options();
+
+  private:
+  const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& _internal_options() const;
+  ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* _internal_mutable_options();
+
+  public:
+  // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* value);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.Function)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      1, 3, 3,
+      48, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
+
+        inline explicit constexpr Impl_(
+            ::google::protobuf::internal::ConstantInitialized) noexcept;
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena);
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena, const Impl_& from);
+    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Value > args_;
+    ::google::protobuf::internal::MapField<Function_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE>
+        options_;
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto;
+};// -------------------------------------------------------------------
+
+class Function_OptionsEntry_DoNotUse final
+    : public ::google::protobuf::internal::MapEntry<
+          Function_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+          ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+          ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE> {
+ public:
+  using SuperType = ::google::protobuf::internal::MapEntry<
+      Function_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+      ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE>;
+  Function_OptionsEntry_DoNotUse();
+  template <typename = void>
+  explicit PROTOBUF_CONSTEXPR Function_OptionsEntry_DoNotUse(
+      ::google::protobuf::internal::ConstantInitialized);
+  explicit Function_OptionsEntry_DoNotUse(::google::protobuf::Arena* arena);
+  static const Function_OptionsEntry_DoNotUse* internal_default_instance() {
+    return reinterpret_cast<const Function_OptionsEntry_DoNotUse*>(
+        &_Function_OptionsEntry_DoNotUse_default_instance_);
+  }
+  static bool ValidateKey(std::string* s) {
+    return ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::google::protobuf::internal::WireFormatLite::PARSE, "google.firestore.v1.Function.OptionsEntry.key");
+ }
+  static bool ValidateValue(void*) { return true; }
+  ::google::protobuf::Metadata GetMetadata() const final;
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto;
+};
+// -------------------------------------------------------------------
+
 class MapValue final :
     public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.MapValue) */ {
  public:
@@ -508,26 +774,26 @@ class MapValue_FieldsEntry_DoNotUse final
 };
 // -------------------------------------------------------------------
 
-class Value final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Value) */ {
+class Pipeline final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Pipeline) */ {
  public:
-  inline Value() : Value(nullptr) {}
-  ~Value() override;
+  inline Pipeline() : Pipeline(nullptr) {}
+  ~Pipeline() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR Value(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR Pipeline(::google::protobuf::internal::ConstantInitialized);
 
-  inline Value(const Value& from)
-      : Value(nullptr, from) {}
-  Value(Value&& from) noexcept
-    : Value() {
+  inline Pipeline(const Pipeline& from)
+      : Pipeline(nullptr, from) {}
+  Pipeline(Pipeline&& from) noexcept
+    : Pipeline() {
     *this = ::std::move(from);
   }
 
-  inline Value& operator=(const Value& from) {
+  inline Pipeline& operator=(const Pipeline& from) {
     CopyFrom(from);
     return *this;
   }
-  inline Value& operator=(Value&& from) noexcept {
+  inline Pipeline& operator=(Pipeline&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -559,35 +825,20 @@ class Value final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const Value& default_instance() {
+  static const Pipeline& default_instance() {
     return *internal_default_instance();
   }
-  enum ValueTypeCase {
-    kNullValue = 11,
-    kBooleanValue = 1,
-    kIntegerValue = 2,
-    kDoubleValue = 3,
-    kTimestampValue = 10,
-    kStringValue = 17,
-    kBytesValue = 18,
-    kReferenceValue = 5,
-    kGeoPointValue = 8,
-    kArrayValue = 9,
-    kMapValue = 6,
-    VALUE_TYPE_NOT_SET = 0,
-  };
-
-  static inline const Value* internal_default_instance() {
-    return reinterpret_cast<const Value*>(
-               &_Value_default_instance_);
+  static inline const Pipeline* internal_default_instance() {
+    return reinterpret_cast<const Pipeline*>(
+               &_Pipeline_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    2;
+    10;
 
-  friend void swap(Value& a, Value& b) {
+  friend void swap(Pipeline& a, Pipeline& b) {
     a.Swap(&b);
   }
-  inline void Swap(Value* other) {
+  inline void Swap(Pipeline* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -600,7 +851,7 @@ class Value final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(Value* other) {
+  void UnsafeArenaSwap(Pipeline* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -608,14 +859,14 @@ class Value final :
 
   // implements Message ----------------------------------------------
 
-  Value* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<Value>(arena);
+  Pipeline* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Pipeline>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const Value& from);
+  void CopyFrom(const Pipeline& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const Value& from) {
-    Value::MergeImpl(*this, from);
+  void MergeFrom( const Pipeline& from) {
+    Pipeline::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -633,16 +884,16 @@ class Value final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(Value* other);
+  void InternalSwap(Pipeline* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.Value";
+    return "google.firestore.v1.Pipeline";
   }
   protected:
-  explicit Value(::google::protobuf::Arena* arena);
-  Value(::google::protobuf::Arena* arena, const Value& from);
+  explicit Pipeline(::google::protobuf::Arena* arena);
+  Pipeline(::google::protobuf::Arena* arena, const Pipeline& from);
   public:
 
   static const ClassData _class_data_;
@@ -652,42 +903,498 @@ class Value final :
 
   // nested types ----------------------------------------------------
 
+  using Stage = Pipeline_Stage;
+
   // accessors -------------------------------------------------------
 
   enum : int {
-    kNullValueFieldNumber = 11,
-    kBooleanValueFieldNumber = 1,
-    kIntegerValueFieldNumber = 2,
-    kDoubleValueFieldNumber = 3,
-    kTimestampValueFieldNumber = 10,
-    kStringValueFieldNumber = 17,
-    kBytesValueFieldNumber = 18,
-    kReferenceValueFieldNumber = 5,
-    kGeoPointValueFieldNumber = 8,
-    kArrayValueFieldNumber = 9,
-    kMapValueFieldNumber = 6,
+    kStagesFieldNumber = 1,
   };
-  // .google.protobuf.NullValue null_value = 11;
-  bool has_null_value() const;
-  void clear_null_value() ;
-  ::google::protobuf::NullValue null_value() const;
-  void set_null_value(::google::protobuf::NullValue value);
-
+  // repeated .google.firestore.v1.Pipeline.Stage stages = 1 [(.google.api.field_behavior) = REQUIRED];
+  int stages_size() const;
   private:
-  ::google::protobuf::NullValue _internal_null_value() const;
-  void _internal_set_null_value(::google::protobuf::NullValue value);
+  int _internal_stages_size() const;
 
   public:
-  // bool boolean_value = 1;
-  bool has_boolean_value() const;
-  void clear_boolean_value() ;
-  bool boolean_value() const;
-  void set_boolean_value(bool value);
-
+  void clear_stages() ;
+  ::google::firestore::v1::Pipeline_Stage* mutable_stages(int index);
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Pipeline_Stage >*
+      mutable_stages();
   private:
-  bool _internal_boolean_value() const;
-  void _internal_set_boolean_value(bool value);
-
+  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Pipeline_Stage>& _internal_stages() const;
+  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Pipeline_Stage>* _internal_mutable_stages();
+  public:
+  const ::google::firestore::v1::Pipeline_Stage& stages(int index) const;
+  ::google::firestore::v1::Pipeline_Stage* add_stages();
+  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Pipeline_Stage >&
+      stages() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.Pipeline)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      0, 1, 1,
+      0, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
+
+        inline explicit constexpr Impl_(
+            ::google::protobuf::internal::ConstantInitialized) noexcept;
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena);
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena, const Impl_& from);
+    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Pipeline_Stage > stages_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto;
+};// -------------------------------------------------------------------
+
+class Pipeline_Stage final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Pipeline.Stage) */ {
+ public:
+  inline Pipeline_Stage() : Pipeline_Stage(nullptr) {}
+  ~Pipeline_Stage() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Pipeline_Stage(::google::protobuf::internal::ConstantInitialized);
+
+  inline Pipeline_Stage(const Pipeline_Stage& from)
+      : Pipeline_Stage(nullptr, from) {}
+  Pipeline_Stage(Pipeline_Stage&& from) noexcept
+    : Pipeline_Stage() {
+    *this = ::std::move(from);
+  }
+
+  inline Pipeline_Stage& operator=(const Pipeline_Stage& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Pipeline_Stage& operator=(Pipeline_Stage&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetArena() == from.GetArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields()
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Pipeline_Stage& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Pipeline_Stage* internal_default_instance() {
+    return reinterpret_cast<const Pipeline_Stage*>(
+               &_Pipeline_Stage_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    9;
+
+  friend void swap(Pipeline_Stage& a, Pipeline_Stage& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Pipeline_Stage* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() != nullptr &&
+        GetArena() == other->GetArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() == other->GetArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Pipeline_Stage* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetArena() == other->GetArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Pipeline_Stage* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Pipeline_Stage>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Pipeline_Stage& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Pipeline_Stage& from) {
+    Pipeline_Stage::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const { return _impl_._cached_size_.Get(); }
+
+  private:
+  ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void InternalSwap(Pipeline_Stage* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "google.firestore.v1.Pipeline.Stage";
+  }
+  protected:
+  explicit Pipeline_Stage(::google::protobuf::Arena* arena);
+  Pipeline_Stage(::google::protobuf::Arena* arena, const Pipeline_Stage& from);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kArgsFieldNumber = 2,
+    kOptionsFieldNumber = 3,
+    kNameFieldNumber = 1,
+  };
+  // repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+  int args_size() const;
+  private:
+  int _internal_args_size() const;
+
+  public:
+  void clear_args() ;
+  ::google::firestore::v1::Value* mutable_args(int index);
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Value >*
+      mutable_args();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>& _internal_args() const;
+  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>* _internal_mutable_args();
+  public:
+  const ::google::firestore::v1::Value& args(int index) const;
+  ::google::firestore::v1::Value* add_args();
+  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Value >&
+      args() const;
+  // map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+  int options_size() const;
+  private:
+  int _internal_options_size() const;
+
+  public:
+  void clear_options() ;
+  const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& options() const;
+  ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* mutable_options();
+
+  private:
+  const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& _internal_options() const;
+  ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* _internal_mutable_options();
+
+  public:
+  // string name = 1 [(.google.api.field_behavior) = REQUIRED];
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* value);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.Pipeline.Stage)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      1, 3, 3,
+      54, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
+
+        inline explicit constexpr Impl_(
+            ::google::protobuf::internal::ConstantInitialized) noexcept;
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena);
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena, const Impl_& from);
+    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Value > args_;
+    ::google::protobuf::internal::MapField<Pipeline_Stage_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE>
+        options_;
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto;
+};// -------------------------------------------------------------------
+
+class Pipeline_Stage_OptionsEntry_DoNotUse final
+    : public ::google::protobuf::internal::MapEntry<
+          Pipeline_Stage_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+          ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+          ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE> {
+ public:
+  using SuperType = ::google::protobuf::internal::MapEntry<
+      Pipeline_Stage_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+      ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE>;
+  Pipeline_Stage_OptionsEntry_DoNotUse();
+  template <typename = void>
+  explicit PROTOBUF_CONSTEXPR Pipeline_Stage_OptionsEntry_DoNotUse(
+      ::google::protobuf::internal::ConstantInitialized);
+  explicit Pipeline_Stage_OptionsEntry_DoNotUse(::google::protobuf::Arena* arena);
+  static const Pipeline_Stage_OptionsEntry_DoNotUse* internal_default_instance() {
+    return reinterpret_cast<const Pipeline_Stage_OptionsEntry_DoNotUse*>(
+        &_Pipeline_Stage_OptionsEntry_DoNotUse_default_instance_);
+  }
+  static bool ValidateKey(std::string* s) {
+    return ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::google::protobuf::internal::WireFormatLite::PARSE, "google.firestore.v1.Pipeline.Stage.OptionsEntry.key");
+ }
+  static bool ValidateValue(void*) { return true; }
+  ::google::protobuf::Metadata GetMetadata() const final;
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fdocument_2eproto;
+};
+// -------------------------------------------------------------------
+
+class Value final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Value) */ {
+ public:
+  inline Value() : Value(nullptr) {}
+  ~Value() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Value(::google::protobuf::internal::ConstantInitialized);
+
+  inline Value(const Value& from)
+      : Value(nullptr, from) {}
+  Value(Value&& from) noexcept
+    : Value() {
+    *this = ::std::move(from);
+  }
+
+  inline Value& operator=(const Value& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Value& operator=(Value&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetArena() == from.GetArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields()
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Value& default_instance() {
+    return *internal_default_instance();
+  }
+  enum ValueTypeCase {
+    kNullValue = 11,
+    kBooleanValue = 1,
+    kIntegerValue = 2,
+    kDoubleValue = 3,
+    kTimestampValue = 10,
+    kStringValue = 17,
+    kBytesValue = 18,
+    kReferenceValue = 5,
+    kGeoPointValue = 8,
+    kArrayValue = 9,
+    kMapValue = 6,
+    kFieldReferenceValue = 19,
+    kFunctionValue = 20,
+    kPipelineValue = 21,
+    VALUE_TYPE_NOT_SET = 0,
+  };
+
+  static inline const Value* internal_default_instance() {
+    return reinterpret_cast<const Value*>(
+               &_Value_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    2;
+
+  friend void swap(Value& a, Value& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Value* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() != nullptr &&
+        GetArena() == other->GetArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() == other->GetArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Value* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetArena() == other->GetArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Value* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Value>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Value& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Value& from) {
+    Value::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const { return _impl_._cached_size_.Get(); }
+
+  private:
+  ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void InternalSwap(Value* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "google.firestore.v1.Value";
+  }
+  protected:
+  explicit Value(::google::protobuf::Arena* arena);
+  Value(::google::protobuf::Arena* arena, const Value& from);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kNullValueFieldNumber = 11,
+    kBooleanValueFieldNumber = 1,
+    kIntegerValueFieldNumber = 2,
+    kDoubleValueFieldNumber = 3,
+    kTimestampValueFieldNumber = 10,
+    kStringValueFieldNumber = 17,
+    kBytesValueFieldNumber = 18,
+    kReferenceValueFieldNumber = 5,
+    kGeoPointValueFieldNumber = 8,
+    kArrayValueFieldNumber = 9,
+    kMapValueFieldNumber = 6,
+    kFieldReferenceValueFieldNumber = 19,
+    kFunctionValueFieldNumber = 20,
+    kPipelineValueFieldNumber = 21,
+  };
+  // .google.protobuf.NullValue null_value = 11;
+  bool has_null_value() const;
+  void clear_null_value() ;
+  ::google::protobuf::NullValue null_value() const;
+  void set_null_value(::google::protobuf::NullValue value);
+
+  private:
+  ::google::protobuf::NullValue _internal_null_value() const;
+  void _internal_set_null_value(::google::protobuf::NullValue value);
+
+  public:
+  // bool boolean_value = 1;
+  bool has_boolean_value() const;
+  void clear_boolean_value() ;
+  bool boolean_value() const;
+  void set_boolean_value(bool value);
+
+  private:
+  bool _internal_boolean_value() const;
+  void _internal_set_boolean_value(bool value);
+
   public:
   // int64 integer_value = 2;
   bool has_integer_value() const;
@@ -837,6 +1544,61 @@ class Value final :
   const ::google::firestore::v1::MapValue& _internal_map_value() const;
   ::google::firestore::v1::MapValue* _internal_mutable_map_value();
 
+  public:
+  // string field_reference_value = 19;
+  bool has_field_reference_value() const;
+  void clear_field_reference_value() ;
+  const std::string& field_reference_value() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_field_reference_value(Arg_&& arg, Args_... args);
+  std::string* mutable_field_reference_value();
+  PROTOBUF_NODISCARD std::string* release_field_reference_value();
+  void set_allocated_field_reference_value(std::string* value);
+
+  private:
+  const std::string& _internal_field_reference_value() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_field_reference_value(
+      const std::string& value);
+  std::string* _internal_mutable_field_reference_value();
+
+  public:
+  // .google.firestore.v1.Function function_value = 20;
+  bool has_function_value() const;
+  private:
+  bool _internal_has_function_value() const;
+
+  public:
+  void clear_function_value() ;
+  const ::google::firestore::v1::Function& function_value() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Function* release_function_value();
+  ::google::firestore::v1::Function* mutable_function_value();
+  void set_allocated_function_value(::google::firestore::v1::Function* value);
+  void unsafe_arena_set_allocated_function_value(::google::firestore::v1::Function* value);
+  ::google::firestore::v1::Function* unsafe_arena_release_function_value();
+
+  private:
+  const ::google::firestore::v1::Function& _internal_function_value() const;
+  ::google::firestore::v1::Function* _internal_mutable_function_value();
+
+  public:
+  // .google.firestore.v1.Pipeline pipeline_value = 21;
+  bool has_pipeline_value() const;
+  private:
+  bool _internal_has_pipeline_value() const;
+
+  public:
+  void clear_pipeline_value() ;
+  const ::google::firestore::v1::Pipeline& pipeline_value() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Pipeline* release_pipeline_value();
+  ::google::firestore::v1::Pipeline* mutable_pipeline_value();
+  void set_allocated_pipeline_value(::google::firestore::v1::Pipeline* value);
+  void unsafe_arena_set_allocated_pipeline_value(::google::firestore::v1::Pipeline* value);
+  ::google::firestore::v1::Pipeline* unsafe_arena_release_pipeline_value();
+
+  private:
+  const ::google::firestore::v1::Pipeline& _internal_pipeline_value() const;
+  ::google::firestore::v1::Pipeline* _internal_mutable_pipeline_value();
+
   public:
   void clear_value_type();
   ValueTypeCase value_type_case() const;
@@ -854,14 +1616,17 @@ class Value final :
   void set_has_geo_point_value();
   void set_has_array_value();
   void set_has_map_value();
+  void set_has_field_reference_value();
+  void set_has_function_value();
+  void set_has_pipeline_value();
 
   inline bool has_value_type() const;
   inline void clear_has_value_type();
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      0, 11, 4,
-      69, 2>
+      0, 14, 6,
+      90, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
@@ -891,6 +1656,9 @@ class Value final :
       ::google::type::LatLng* geo_point_value_;
       ::google::firestore::v1::ArrayValue* array_value_;
       ::google::firestore::v1::MapValue* map_value_;
+      ::google::protobuf::internal::ArenaStringPtr field_reference_value_;
+      ::google::firestore::v1::Function* function_value_;
+      ::google::firestore::v1::Pipeline* pipeline_value_;
     } value_type_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
     ::uint32_t _oneof_case_[1];
@@ -1984,155 +2752,392 @@ inline ::google::type::LatLng* Value::mutable_geo_point_value() ABSL_ATTRIBUTE_L
   return _msg;
 }
 
-// .google.firestore.v1.ArrayValue array_value = 9;
-inline bool Value::has_array_value() const {
-  return value_type_case() == kArrayValue;
+// .google.firestore.v1.ArrayValue array_value = 9;
+inline bool Value::has_array_value() const {
+  return value_type_case() == kArrayValue;
+}
+inline bool Value::_internal_has_array_value() const {
+  return value_type_case() == kArrayValue;
+}
+inline void Value::set_has_array_value() {
+  _impl_._oneof_case_[0] = kArrayValue;
+}
+inline void Value::clear_array_value() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (value_type_case() == kArrayValue) {
+    if (GetArena() == nullptr) {
+      delete _impl_.value_type_.array_value_;
+    }
+    clear_has_value_type();
+  }
+}
+inline ::google::firestore::v1::ArrayValue* Value::release_array_value() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.Value.array_value)
+  if (value_type_case() == kArrayValue) {
+    clear_has_value_type();
+    auto* temp = _impl_.value_type_.array_value_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.value_type_.array_value_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline const ::google::firestore::v1::ArrayValue& Value::_internal_array_value() const {
+  return value_type_case() == kArrayValue ? *_impl_.value_type_.array_value_ : reinterpret_cast<::google::firestore::v1::ArrayValue&>(::google::firestore::v1::_ArrayValue_default_instance_);
+}
+inline const ::google::firestore::v1::ArrayValue& Value::array_value() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Value.array_value)
+  return _internal_array_value();
+}
+inline ::google::firestore::v1::ArrayValue* Value::unsafe_arena_release_array_value() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.Value.array_value)
+  if (value_type_case() == kArrayValue) {
+    clear_has_value_type();
+    auto* temp = _impl_.value_type_.array_value_;
+    _impl_.value_type_.array_value_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline void Value::unsafe_arena_set_allocated_array_value(::google::firestore::v1::ArrayValue* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_value_type();
+  if (value) {
+    set_has_array_value();
+    _impl_.value_type_.array_value_ = value;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.Value.array_value)
+}
+inline ::google::firestore::v1::ArrayValue* Value::_internal_mutable_array_value() {
+  if (value_type_case() != kArrayValue) {
+    clear_value_type();
+    set_has_array_value();
+    _impl_.value_type_.array_value_ = CreateMaybeMessage<::google::firestore::v1::ArrayValue>(GetArena());
+  }
+  return _impl_.value_type_.array_value_;
+}
+inline ::google::firestore::v1::ArrayValue* Value::mutable_array_value() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::ArrayValue* _msg = _internal_mutable_array_value();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Value.array_value)
+  return _msg;
+}
+
+// .google.firestore.v1.MapValue map_value = 6;
+inline bool Value::has_map_value() const {
+  return value_type_case() == kMapValue;
+}
+inline bool Value::_internal_has_map_value() const {
+  return value_type_case() == kMapValue;
+}
+inline void Value::set_has_map_value() {
+  _impl_._oneof_case_[0] = kMapValue;
+}
+inline void Value::clear_map_value() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (value_type_case() == kMapValue) {
+    if (GetArena() == nullptr) {
+      delete _impl_.value_type_.map_value_;
+    }
+    clear_has_value_type();
+  }
+}
+inline ::google::firestore::v1::MapValue* Value::release_map_value() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.Value.map_value)
+  if (value_type_case() == kMapValue) {
+    clear_has_value_type();
+    auto* temp = _impl_.value_type_.map_value_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.value_type_.map_value_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline const ::google::firestore::v1::MapValue& Value::_internal_map_value() const {
+  return value_type_case() == kMapValue ? *_impl_.value_type_.map_value_ : reinterpret_cast<::google::firestore::v1::MapValue&>(::google::firestore::v1::_MapValue_default_instance_);
+}
+inline const ::google::firestore::v1::MapValue& Value::map_value() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Value.map_value)
+  return _internal_map_value();
+}
+inline ::google::firestore::v1::MapValue* Value::unsafe_arena_release_map_value() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.Value.map_value)
+  if (value_type_case() == kMapValue) {
+    clear_has_value_type();
+    auto* temp = _impl_.value_type_.map_value_;
+    _impl_.value_type_.map_value_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline void Value::unsafe_arena_set_allocated_map_value(::google::firestore::v1::MapValue* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_value_type();
+  if (value) {
+    set_has_map_value();
+    _impl_.value_type_.map_value_ = value;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.Value.map_value)
+}
+inline ::google::firestore::v1::MapValue* Value::_internal_mutable_map_value() {
+  if (value_type_case() != kMapValue) {
+    clear_value_type();
+    set_has_map_value();
+    _impl_.value_type_.map_value_ = CreateMaybeMessage<::google::firestore::v1::MapValue>(GetArena());
+  }
+  return _impl_.value_type_.map_value_;
+}
+inline ::google::firestore::v1::MapValue* Value::mutable_map_value() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::MapValue* _msg = _internal_mutable_map_value();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Value.map_value)
+  return _msg;
+}
+
+// string field_reference_value = 19;
+inline bool Value::has_field_reference_value() const {
+  return value_type_case() == kFieldReferenceValue;
+}
+inline void Value::set_has_field_reference_value() {
+  _impl_._oneof_case_[0] = kFieldReferenceValue;
+}
+inline void Value::clear_field_reference_value() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (value_type_case() == kFieldReferenceValue) {
+    _impl_.value_type_.field_reference_value_.Destroy();
+    clear_has_value_type();
+  }
+}
+inline const std::string& Value::field_reference_value() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Value.field_reference_value)
+  return _internal_field_reference_value();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Value::set_field_reference_value(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (value_type_case() != kFieldReferenceValue) {
+    clear_value_type();
+
+    set_has_field_reference_value();
+    _impl_.value_type_.field_reference_value_.InitDefault();
+  }
+  _impl_.value_type_.field_reference_value_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.Value.field_reference_value)
+}
+inline std::string* Value::mutable_field_reference_value() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_field_reference_value();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Value.field_reference_value)
+  return _s;
+}
+inline const std::string& Value::_internal_field_reference_value() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  if (value_type_case() != kFieldReferenceValue) {
+    return ::google::protobuf::internal::GetEmptyStringAlreadyInited();
+  }
+  return _impl_.value_type_.field_reference_value_.Get();
+}
+inline void Value::_internal_set_field_reference_value(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (value_type_case() != kFieldReferenceValue) {
+    clear_value_type();
+
+    set_has_field_reference_value();
+    _impl_.value_type_.field_reference_value_.InitDefault();
+  }
+  _impl_.value_type_.field_reference_value_.Set(value, GetArena());
+}
+inline std::string* Value::_internal_mutable_field_reference_value() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (value_type_case() != kFieldReferenceValue) {
+    clear_value_type();
+
+    set_has_field_reference_value();
+    _impl_.value_type_.field_reference_value_.InitDefault();
+  }
+  return _impl_.value_type_.field_reference_value_.Mutable( GetArena());
+}
+inline std::string* Value::release_field_reference_value() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.Value.field_reference_value)
+  if (value_type_case() != kFieldReferenceValue) {
+    return nullptr;
+  }
+  clear_has_value_type();
+  return _impl_.value_type_.field_reference_value_.Release();
+}
+inline void Value::set_allocated_field_reference_value(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (has_value_type()) {
+    clear_value_type();
+  }
+  if (value != nullptr) {
+    set_has_field_reference_value();
+    _impl_.value_type_.field_reference_value_.InitAllocated(value, GetArena());
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.Value.field_reference_value)
+}
+
+// .google.firestore.v1.Function function_value = 20;
+inline bool Value::has_function_value() const {
+  return value_type_case() == kFunctionValue;
 }
-inline bool Value::_internal_has_array_value() const {
-  return value_type_case() == kArrayValue;
+inline bool Value::_internal_has_function_value() const {
+  return value_type_case() == kFunctionValue;
 }
-inline void Value::set_has_array_value() {
-  _impl_._oneof_case_[0] = kArrayValue;
+inline void Value::set_has_function_value() {
+  _impl_._oneof_case_[0] = kFunctionValue;
 }
-inline void Value::clear_array_value() {
+inline void Value::clear_function_value() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (value_type_case() == kArrayValue) {
+  if (value_type_case() == kFunctionValue) {
     if (GetArena() == nullptr) {
-      delete _impl_.value_type_.array_value_;
+      delete _impl_.value_type_.function_value_;
     }
     clear_has_value_type();
   }
 }
-inline ::google::firestore::v1::ArrayValue* Value::release_array_value() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.Value.array_value)
-  if (value_type_case() == kArrayValue) {
+inline ::google::firestore::v1::Function* Value::release_function_value() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.Value.function_value)
+  if (value_type_case() == kFunctionValue) {
     clear_has_value_type();
-    auto* temp = _impl_.value_type_.array_value_;
+    auto* temp = _impl_.value_type_.function_value_;
     if (GetArena() != nullptr) {
       temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
     }
-    _impl_.value_type_.array_value_ = nullptr;
+    _impl_.value_type_.function_value_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline const ::google::firestore::v1::ArrayValue& Value::_internal_array_value() const {
-  return value_type_case() == kArrayValue ? *_impl_.value_type_.array_value_ : reinterpret_cast<::google::firestore::v1::ArrayValue&>(::google::firestore::v1::_ArrayValue_default_instance_);
+inline const ::google::firestore::v1::Function& Value::_internal_function_value() const {
+  return value_type_case() == kFunctionValue ? *_impl_.value_type_.function_value_ : reinterpret_cast<::google::firestore::v1::Function&>(::google::firestore::v1::_Function_default_instance_);
 }
-inline const ::google::firestore::v1::ArrayValue& Value::array_value() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.Value.array_value)
-  return _internal_array_value();
+inline const ::google::firestore::v1::Function& Value::function_value() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Value.function_value)
+  return _internal_function_value();
 }
-inline ::google::firestore::v1::ArrayValue* Value::unsafe_arena_release_array_value() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.Value.array_value)
-  if (value_type_case() == kArrayValue) {
+inline ::google::firestore::v1::Function* Value::unsafe_arena_release_function_value() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.Value.function_value)
+  if (value_type_case() == kFunctionValue) {
     clear_has_value_type();
-    auto* temp = _impl_.value_type_.array_value_;
-    _impl_.value_type_.array_value_ = nullptr;
+    auto* temp = _impl_.value_type_.function_value_;
+    _impl_.value_type_.function_value_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline void Value::unsafe_arena_set_allocated_array_value(::google::firestore::v1::ArrayValue* value) {
+inline void Value::unsafe_arena_set_allocated_function_value(::google::firestore::v1::Function* value) {
   // We rely on the oneof clear method to free the earlier contents
   // of this oneof. We can directly use the pointer we're given to
   // set the new value.
   clear_value_type();
   if (value) {
-    set_has_array_value();
-    _impl_.value_type_.array_value_ = value;
+    set_has_function_value();
+    _impl_.value_type_.function_value_ = value;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.Value.array_value)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.Value.function_value)
 }
-inline ::google::firestore::v1::ArrayValue* Value::_internal_mutable_array_value() {
-  if (value_type_case() != kArrayValue) {
+inline ::google::firestore::v1::Function* Value::_internal_mutable_function_value() {
+  if (value_type_case() != kFunctionValue) {
     clear_value_type();
-    set_has_array_value();
-    _impl_.value_type_.array_value_ = CreateMaybeMessage<::google::firestore::v1::ArrayValue>(GetArena());
+    set_has_function_value();
+    _impl_.value_type_.function_value_ = CreateMaybeMessage<::google::firestore::v1::Function>(GetArena());
   }
-  return _impl_.value_type_.array_value_;
+  return _impl_.value_type_.function_value_;
 }
-inline ::google::firestore::v1::ArrayValue* Value::mutable_array_value() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::ArrayValue* _msg = _internal_mutable_array_value();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Value.array_value)
+inline ::google::firestore::v1::Function* Value::mutable_function_value() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Function* _msg = _internal_mutable_function_value();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Value.function_value)
   return _msg;
 }
 
-// .google.firestore.v1.MapValue map_value = 6;
-inline bool Value::has_map_value() const {
-  return value_type_case() == kMapValue;
+// .google.firestore.v1.Pipeline pipeline_value = 21;
+inline bool Value::has_pipeline_value() const {
+  return value_type_case() == kPipelineValue;
 }
-inline bool Value::_internal_has_map_value() const {
-  return value_type_case() == kMapValue;
+inline bool Value::_internal_has_pipeline_value() const {
+  return value_type_case() == kPipelineValue;
 }
-inline void Value::set_has_map_value() {
-  _impl_._oneof_case_[0] = kMapValue;
+inline void Value::set_has_pipeline_value() {
+  _impl_._oneof_case_[0] = kPipelineValue;
 }
-inline void Value::clear_map_value() {
+inline void Value::clear_pipeline_value() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (value_type_case() == kMapValue) {
+  if (value_type_case() == kPipelineValue) {
     if (GetArena() == nullptr) {
-      delete _impl_.value_type_.map_value_;
+      delete _impl_.value_type_.pipeline_value_;
     }
     clear_has_value_type();
   }
 }
-inline ::google::firestore::v1::MapValue* Value::release_map_value() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.Value.map_value)
-  if (value_type_case() == kMapValue) {
+inline ::google::firestore::v1::Pipeline* Value::release_pipeline_value() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.Value.pipeline_value)
+  if (value_type_case() == kPipelineValue) {
     clear_has_value_type();
-    auto* temp = _impl_.value_type_.map_value_;
+    auto* temp = _impl_.value_type_.pipeline_value_;
     if (GetArena() != nullptr) {
       temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
     }
-    _impl_.value_type_.map_value_ = nullptr;
+    _impl_.value_type_.pipeline_value_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline const ::google::firestore::v1::MapValue& Value::_internal_map_value() const {
-  return value_type_case() == kMapValue ? *_impl_.value_type_.map_value_ : reinterpret_cast<::google::firestore::v1::MapValue&>(::google::firestore::v1::_MapValue_default_instance_);
+inline const ::google::firestore::v1::Pipeline& Value::_internal_pipeline_value() const {
+  return value_type_case() == kPipelineValue ? *_impl_.value_type_.pipeline_value_ : reinterpret_cast<::google::firestore::v1::Pipeline&>(::google::firestore::v1::_Pipeline_default_instance_);
 }
-inline const ::google::firestore::v1::MapValue& Value::map_value() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.Value.map_value)
-  return _internal_map_value();
+inline const ::google::firestore::v1::Pipeline& Value::pipeline_value() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Value.pipeline_value)
+  return _internal_pipeline_value();
 }
-inline ::google::firestore::v1::MapValue* Value::unsafe_arena_release_map_value() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.Value.map_value)
-  if (value_type_case() == kMapValue) {
+inline ::google::firestore::v1::Pipeline* Value::unsafe_arena_release_pipeline_value() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.Value.pipeline_value)
+  if (value_type_case() == kPipelineValue) {
     clear_has_value_type();
-    auto* temp = _impl_.value_type_.map_value_;
-    _impl_.value_type_.map_value_ = nullptr;
+    auto* temp = _impl_.value_type_.pipeline_value_;
+    _impl_.value_type_.pipeline_value_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline void Value::unsafe_arena_set_allocated_map_value(::google::firestore::v1::MapValue* value) {
+inline void Value::unsafe_arena_set_allocated_pipeline_value(::google::firestore::v1::Pipeline* value) {
   // We rely on the oneof clear method to free the earlier contents
   // of this oneof. We can directly use the pointer we're given to
   // set the new value.
   clear_value_type();
   if (value) {
-    set_has_map_value();
-    _impl_.value_type_.map_value_ = value;
+    set_has_pipeline_value();
+    _impl_.value_type_.pipeline_value_ = value;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.Value.map_value)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.Value.pipeline_value)
 }
-inline ::google::firestore::v1::MapValue* Value::_internal_mutable_map_value() {
-  if (value_type_case() != kMapValue) {
+inline ::google::firestore::v1::Pipeline* Value::_internal_mutable_pipeline_value() {
+  if (value_type_case() != kPipelineValue) {
     clear_value_type();
-    set_has_map_value();
-    _impl_.value_type_.map_value_ = CreateMaybeMessage<::google::firestore::v1::MapValue>(GetArena());
+    set_has_pipeline_value();
+    _impl_.value_type_.pipeline_value_ = CreateMaybeMessage<::google::firestore::v1::Pipeline>(GetArena());
   }
-  return _impl_.value_type_.map_value_;
+  return _impl_.value_type_.pipeline_value_;
 }
-inline ::google::firestore::v1::MapValue* Value::mutable_map_value() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::MapValue* _msg = _internal_mutable_map_value();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Value.map_value)
+inline ::google::firestore::v1::Pipeline* Value::mutable_pipeline_value() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Pipeline* _msg = _internal_mutable_pipeline_value();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Value.pipeline_value)
   return _msg;
 }
 
@@ -2232,6 +3237,331 @@ inline ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* Map
   return _internal_mutable_fields();
 }
 
+// -------------------------------------------------------------------
+
+// -------------------------------------------------------------------
+
+// Function
+
+// string name = 1 [(.google.api.field_behavior) = REQUIRED];
+inline void Function::clear_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& Function::name() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Function.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Function::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.Function.name)
+}
+inline std::string* Function::mutable_name() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Function.name)
+  return _s;
+}
+inline const std::string& Function::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void Function::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArena());
+}
+inline std::string* Function::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArena());
+}
+inline std::string* Function::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.Function.name)
+  return _impl_.name_.Release();
+}
+inline void Function::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.Function.name)
+}
+
+// repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+inline int Function::_internal_args_size() const {
+  return _internal_args().size();
+}
+inline int Function::args_size() const {
+  return _internal_args_size();
+}
+inline void Function::clear_args() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.args_.Clear();
+}
+inline ::google::firestore::v1::Value* Function::mutable_args(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Function.args)
+  return _internal_mutable_args()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>* Function::mutable_args()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.Function.args)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_args();
+}
+inline const ::google::firestore::v1::Value& Function::args(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Function.args)
+  return _internal_args().Get(index);
+}
+inline ::google::firestore::v1::Value* Function::add_args() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::google::firestore::v1::Value* _add = _internal_mutable_args()->Add();
+  // @@protoc_insertion_point(field_add:google.firestore.v1.Function.args)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>& Function::args() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.Function.args)
+  return _internal_args();
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>&
+Function::_internal_args() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.args_;
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>*
+Function::_internal_mutable_args() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.args_;
+}
+
+// map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+inline int Function::_internal_options_size() const {
+  return _internal_options().size();
+}
+inline int Function::options_size() const {
+  return _internal_options_size();
+}
+inline void Function::clear_options() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.options_.Clear();
+}
+inline const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& Function::_internal_options() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.options_.GetMap();
+}
+inline const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& Function::options() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_map:google.firestore.v1.Function.options)
+  return _internal_options();
+}
+inline ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* Function::_internal_mutable_options() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _impl_.options_.MutableMap();
+}
+inline ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* Function::mutable_options() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_map:google.firestore.v1.Function.options)
+  return _internal_mutable_options();
+}
+
+// -------------------------------------------------------------------
+
+// -------------------------------------------------------------------
+
+// Pipeline_Stage
+
+// string name = 1 [(.google.api.field_behavior) = REQUIRED];
+inline void Pipeline_Stage::clear_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& Pipeline_Stage::name() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Pipeline.Stage.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Pipeline_Stage::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.Pipeline.Stage.name)
+}
+inline std::string* Pipeline_Stage::mutable_name() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Pipeline.Stage.name)
+  return _s;
+}
+inline const std::string& Pipeline_Stage::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void Pipeline_Stage::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArena());
+}
+inline std::string* Pipeline_Stage::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArena());
+}
+inline std::string* Pipeline_Stage::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.Pipeline.Stage.name)
+  return _impl_.name_.Release();
+}
+inline void Pipeline_Stage::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.Pipeline.Stage.name)
+}
+
+// repeated .google.firestore.v1.Value args = 2 [(.google.api.field_behavior) = OPTIONAL];
+inline int Pipeline_Stage::_internal_args_size() const {
+  return _internal_args().size();
+}
+inline int Pipeline_Stage::args_size() const {
+  return _internal_args_size();
+}
+inline void Pipeline_Stage::clear_args() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.args_.Clear();
+}
+inline ::google::firestore::v1::Value* Pipeline_Stage::mutable_args(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Pipeline.Stage.args)
+  return _internal_mutable_args()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>* Pipeline_Stage::mutable_args()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.Pipeline.Stage.args)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_args();
+}
+inline const ::google::firestore::v1::Value& Pipeline_Stage::args(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Pipeline.Stage.args)
+  return _internal_args().Get(index);
+}
+inline ::google::firestore::v1::Value* Pipeline_Stage::add_args() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::google::firestore::v1::Value* _add = _internal_mutable_args()->Add();
+  // @@protoc_insertion_point(field_add:google.firestore.v1.Pipeline.Stage.args)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>& Pipeline_Stage::args() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.Pipeline.Stage.args)
+  return _internal_args();
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>&
+Pipeline_Stage::_internal_args() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.args_;
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Value>*
+Pipeline_Stage::_internal_mutable_args() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.args_;
+}
+
+// map<string, .google.firestore.v1.Value> options = 3 [(.google.api.field_behavior) = OPTIONAL];
+inline int Pipeline_Stage::_internal_options_size() const {
+  return _internal_options().size();
+}
+inline int Pipeline_Stage::options_size() const {
+  return _internal_options_size();
+}
+inline void Pipeline_Stage::clear_options() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.options_.Clear();
+}
+inline const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& Pipeline_Stage::_internal_options() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.options_.GetMap();
+}
+inline const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& Pipeline_Stage::options() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_map:google.firestore.v1.Pipeline.Stage.options)
+  return _internal_options();
+}
+inline ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* Pipeline_Stage::_internal_mutable_options() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _impl_.options_.MutableMap();
+}
+inline ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* Pipeline_Stage::mutable_options() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_map:google.firestore.v1.Pipeline.Stage.options)
+  return _internal_mutable_options();
+}
+
+// -------------------------------------------------------------------
+
+// Pipeline
+
+// repeated .google.firestore.v1.Pipeline.Stage stages = 1 [(.google.api.field_behavior) = REQUIRED];
+inline int Pipeline::_internal_stages_size() const {
+  return _internal_stages().size();
+}
+inline int Pipeline::stages_size() const {
+  return _internal_stages_size();
+}
+inline void Pipeline::clear_stages() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.stages_.Clear();
+}
+inline ::google::firestore::v1::Pipeline_Stage* Pipeline::mutable_stages(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.Pipeline.stages)
+  return _internal_mutable_stages()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Pipeline_Stage>* Pipeline::mutable_stages()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.Pipeline.stages)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_stages();
+}
+inline const ::google::firestore::v1::Pipeline_Stage& Pipeline::stages(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.Pipeline.stages)
+  return _internal_stages().Get(index);
+}
+inline ::google::firestore::v1::Pipeline_Stage* Pipeline::add_stages() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::google::firestore::v1::Pipeline_Stage* _add = _internal_mutable_stages()->Add();
+  // @@protoc_insertion_point(field_add:google.firestore.v1.Pipeline.stages)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Pipeline_Stage>& Pipeline::stages() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.Pipeline.stages)
+  return _internal_stages();
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Pipeline_Stage>&
+Pipeline::_internal_stages() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.stages_;
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Pipeline_Stage>*
+Pipeline::_internal_mutable_stages() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.stages_;
+}
+
 #ifdef __GNUC__
 #pragma GCC diagnostic pop
 #endif  // __GNUC__
diff --git a/Firestore/Protos/cpp/google/firestore/v1/explain_stats.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/explain_stats.pb.cc
new file mode 100644
index 00000000000..56f6a17eec0
--- /dev/null
+++ b/Firestore/Protos/cpp/google/firestore/v1/explain_stats.pb.cc
@@ -0,0 +1,366 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/firestore/v1/explain_stats.proto
+
+#include "google/firestore/v1/explain_stats.pb.h"
+
+#include <algorithm>
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/extension_set.h"
+#include "google/protobuf/wire_format_lite.h"
+#include "google/protobuf/descriptor.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/reflection_ops.h"
+#include "google/protobuf/wire_format.h"
+#include "google/protobuf/generated_message_tctable_impl.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+PROTOBUF_PRAGMA_INIT_SEG
+namespace _pb = ::google::protobuf;
+namespace _pbi = ::google::protobuf::internal;
+namespace _fl = ::google::protobuf::internal::field_layout;
+namespace google {
+namespace firestore {
+namespace v1 {
+
+inline constexpr ExplainStats::Impl_::Impl_(
+    ::_pbi::ConstantInitialized) noexcept
+      : _cached_size_{0},
+        data_{nullptr} {}
+
+template <typename>
+PROTOBUF_CONSTEXPR ExplainStats::ExplainStats(::_pbi::ConstantInitialized)
+    : _impl_(::_pbi::ConstantInitialized()) {}
+struct ExplainStatsDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ExplainStatsDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ExplainStatsDefaultTypeInternal() {}
+  union {
+    ExplainStats _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ExplainStatsDefaultTypeInternal _ExplainStats_default_instance_;
+}  // namespace v1
+}  // namespace firestore
+}  // namespace google
+static ::_pb::Metadata file_level_metadata_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto[1];
+static constexpr const ::_pb::EnumDescriptor**
+    file_level_enum_descriptors_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto = nullptr;
+static constexpr const ::_pb::ServiceDescriptor**
+    file_level_service_descriptors_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto = nullptr;
+const ::uint32_t TableStruct_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(
+    protodesc_cold) = {
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExplainStats, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExplainStats, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExplainStats, _impl_.data_),
+    0,
+};
+
+static const ::_pbi::MigrationSchema
+    schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+        {0, 9, -1, sizeof(::google::firestore::v1::ExplainStats)},
+};
+
+static const ::_pb::Message* const file_default_instances[] = {
+    &::google::firestore::v1::_ExplainStats_default_instance_._instance,
+};
+const char descriptor_table_protodef_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+    "\n\'google/firestore/v1/explain_stats.prot"
+    "o\022\023google.firestore.v1\032\031google/protobuf/"
+    "any.proto\"2\n\014ExplainStats\022\"\n\004data\030\001 \001(\0132"
+    "\024.google.protobuf.AnyB\302\001\n\027com.google.fir"
+    "estore.v1B\021ExplainStatsProtoP\001Z;cloud.go"
+    "ogle.com/go/firestore/apiv1/firestorepb;"
+    "firestorepb\252\002\031Google.Cloud.Firestore.V1\312"
+    "\002\031Google\\Cloud\\Firestore\\V1\352\002\034Google::Cl"
+    "oud::Firestore::V1b\006proto3"
+};
+static const ::_pbi::DescriptorTable* const descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_deps[1] =
+    {
+        &::descriptor_table_google_2fprotobuf_2fany_2eproto,
+};
+static ::absl::once_flag descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_once;
+const ::_pbi::DescriptorTable descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto = {
+    false,
+    false,
+    346,
+    descriptor_table_protodef_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto,
+    "google/firestore/v1/explain_stats.proto",
+    &descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_once,
+    descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_deps,
+    1,
+    1,
+    schemas,
+    file_default_instances,
+    TableStruct_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto::offsets,
+    file_level_metadata_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto,
+    file_level_enum_descriptors_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto,
+    file_level_service_descriptors_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto,
+};
+
+// This function exists to be marked as weak.
+// It can significantly speed up compilation by breaking up LLVM's SCC
+// in the .pb.cc translation units. Large translation units see a
+// reduction of more than 35% of walltime for optimized builds. Without
+// the weak attribute all the messages in the file, including all the
+// vtables and everything they use become part of the same SCC through
+// a cycle like:
+// GetMetadata -> descriptor table -> default instances ->
+//   vtables -> GetMetadata
+// By adding a weak function here we break the connection from the
+// individual vtables back into the descriptor table.
+PROTOBUF_ATTRIBUTE_WEAK const ::_pbi::DescriptorTable* descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_getter() {
+  return &descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto;
+}
+// Force running AddDescriptors() at dynamic initialization time.
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2
+static ::_pbi::AddDescriptorsRunner dynamic_init_dummy_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto(&descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto);
+namespace google {
+namespace firestore {
+namespace v1 {
+// ===================================================================
+
+class ExplainStats::_Internal {
+ public:
+  using HasBits = decltype(std::declval<ExplainStats>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(ExplainStats, _impl_._has_bits_);
+  static const ::google::protobuf::Any& data(const ExplainStats* msg);
+  static void set_has_data(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::google::protobuf::Any& ExplainStats::_Internal::data(const ExplainStats* msg) {
+  return *msg->_impl_.data_;
+}
+void ExplainStats::clear_data() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (_impl_.data_ != nullptr) _impl_.data_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+ExplainStats::ExplainStats(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.ExplainStats)
+}
+inline PROTOBUF_NDEBUG_INLINE ExplainStats::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
+    const Impl_& from)
+      : _has_bits_{from._has_bits_},
+        _cached_size_{0} {}
+
+ExplainStats::ExplainStats(
+    ::google::protobuf::Arena* arena,
+    const ExplainStats& from)
+    : ::google::protobuf::Message(arena) {
+  ExplainStats* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
+  ::uint32_t cached_has_bits = _impl_._has_bits_[0];
+  _impl_.data_ = (cached_has_bits & 0x00000001u)
+                ? CreateMaybeMessage<::google::protobuf::Any>(arena, *from._impl_.data_)
+                : nullptr;
+
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.ExplainStats)
+}
+inline PROTOBUF_NDEBUG_INLINE ExplainStats::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility,
+    ::google::protobuf::Arena* arena)
+      : _cached_size_{0} {}
+
+inline void ExplainStats::SharedCtor(::_pb::Arena* arena) {
+  new (&_impl_) Impl_(internal_visibility(), arena);
+  _impl_.data_ = {};
+}
+ExplainStats::~ExplainStats() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.ExplainStats)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ExplainStats::SharedDtor() {
+  ABSL_DCHECK(GetArena() == nullptr);
+  delete _impl_.data_;
+  _impl_.~Impl_();
+}
+
+PROTOBUF_NOINLINE void ExplainStats::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.ExplainStats)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.data_ != nullptr);
+    _impl_.data_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ExplainStats::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> ExplainStats::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(ExplainStats, _impl_._has_bits_),
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_ExplainStats_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .google.protobuf.Any data = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(ExplainStats, _impl_.data_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .google.protobuf.Any data = 1;
+    {PROTOBUF_FIELD_OFFSET(ExplainStats, _impl_.data_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::google::protobuf::Any>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* ExplainStats::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.ExplainStats)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .google.protobuf.Any data = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+        1, _Internal::data(this),
+        _Internal::data(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.ExplainStats)
+  return target;
+}
+
+::size_t ExplainStats::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.ExplainStats)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .google.protobuf.Any data = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size +=
+        1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.data_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ExplainStats::_class_data_ = {
+    ExplainStats::MergeImpl,
+    nullptr,  // OnDemandRegisterArenaDtor
+};
+const ::google::protobuf::Message::ClassData* ExplainStats::GetClassData() const {
+  return &_class_data_;
+}
+
+void ExplainStats::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ExplainStats*>(&to_msg);
+  auto& from = static_cast<const ExplainStats&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.ExplainStats)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_data()->::google::protobuf::Any::MergeFrom(
+        from._internal_data());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ExplainStats::CopyFrom(const ExplainStats& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.ExplainStats)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ExplainStats::IsInitialized() const {
+  return true;
+}
+
+::_pbi::CachedSize* ExplainStats::AccessCachedSize() const {
+  return &_impl_._cached_size_;
+}
+void ExplainStats::InternalSwap(ExplainStats* PROTOBUF_RESTRICT other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  swap(_impl_.data_, other->_impl_.data_);
+}
+
+::google::protobuf::Metadata ExplainStats::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto[0]);
+}
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace v1
+}  // namespace firestore
+}  // namespace google
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+// @@protoc_insertion_point(global_scope)
+#include "google/protobuf/port_undef.inc"
diff --git a/Firestore/Protos/cpp/google/firestore/v1/explain_stats.pb.h b/Firestore/Protos/cpp/google/firestore/v1/explain_stats.pb.h
new file mode 100644
index 00000000000..9dfa833e6bc
--- /dev/null
+++ b/Firestore/Protos/cpp/google/firestore/v1/explain_stats.pb.h
@@ -0,0 +1,398 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/firestore/v1/explain_stats.proto
+// Protobuf C++ Version: 4.25.1
+
+#ifndef GOOGLE_PROTOBUF_INCLUDED_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_2epb_2eh
+#define GOOGLE_PROTOBUF_INCLUDED_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_2epb_2eh
+
+#include <limits>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "google/protobuf/port_def.inc"
+#if PROTOBUF_VERSION < 4025000
+#error "This file was generated by a newer version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please update"
+#error "your headers."
+#endif  // PROTOBUF_VERSION
+
+#if 4025001 < PROTOBUF_MIN_PROTOC_VERSION
+#error "This file was generated by an older version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please"
+#error "regenerate this file with a newer version of protoc."
+#endif  // PROTOBUF_MIN_PROTOC_VERSION
+#include "google/protobuf/port_undef.inc"
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/arena.h"
+#include "google/protobuf/arenastring.h"
+#include "google/protobuf/generated_message_tctable_decl.h"
+#include "google/protobuf/generated_message_util.h"
+#include "google/protobuf/metadata_lite.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/message.h"
+#include "google/protobuf/repeated_field.h"  // IWYU pragma: export
+#include "google/protobuf/extension_set.h"  // IWYU pragma: export
+#include "google/protobuf/unknown_field_set.h"
+#include "google/protobuf/any.pb.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+
+#define PROTOBUF_INTERNAL_EXPORT_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto
+
+namespace google {
+namespace protobuf {
+namespace internal {
+class AnyMetadata;
+}  // namespace internal
+}  // namespace protobuf
+}  // namespace google
+
+// Internal implementation detail -- do not use these members.
+struct TableStruct_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto {
+  static const ::uint32_t offsets[];
+};
+extern const ::google::protobuf::internal::DescriptorTable
+    descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto;
+namespace google {
+namespace firestore {
+namespace v1 {
+class ExplainStats;
+struct ExplainStatsDefaultTypeInternal;
+extern ExplainStatsDefaultTypeInternal _ExplainStats_default_instance_;
+}  // namespace v1
+}  // namespace firestore
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+
+namespace google {
+namespace firestore {
+namespace v1 {
+
+// ===================================================================
+
+
+// -------------------------------------------------------------------
+
+class ExplainStats final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.ExplainStats) */ {
+ public:
+  inline ExplainStats() : ExplainStats(nullptr) {}
+  ~ExplainStats() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ExplainStats(::google::protobuf::internal::ConstantInitialized);
+
+  inline ExplainStats(const ExplainStats& from)
+      : ExplainStats(nullptr, from) {}
+  ExplainStats(ExplainStats&& from) noexcept
+    : ExplainStats() {
+    *this = ::std::move(from);
+  }
+
+  inline ExplainStats& operator=(const ExplainStats& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ExplainStats& operator=(ExplainStats&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetArena() == from.GetArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields()
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ExplainStats& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ExplainStats* internal_default_instance() {
+    return reinterpret_cast<const ExplainStats*>(
+               &_ExplainStats_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    0;
+
+  friend void swap(ExplainStats& a, ExplainStats& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ExplainStats* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() != nullptr &&
+        GetArena() == other->GetArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() == other->GetArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ExplainStats* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetArena() == other->GetArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ExplainStats* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ExplainStats>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ExplainStats& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ExplainStats& from) {
+    ExplainStats::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const { return _impl_._cached_size_.Get(); }
+
+  private:
+  ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void InternalSwap(ExplainStats* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "google.firestore.v1.ExplainStats";
+  }
+  protected:
+  explicit ExplainStats(::google::protobuf::Arena* arena);
+  ExplainStats(::google::protobuf::Arena* arena, const ExplainStats& from);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kDataFieldNumber = 1,
+  };
+  // .google.protobuf.Any data = 1;
+  bool has_data() const;
+  void clear_data() ;
+  const ::google::protobuf::Any& data() const;
+  PROTOBUF_NODISCARD ::google::protobuf::Any* release_data();
+  ::google::protobuf::Any* mutable_data();
+  void set_allocated_data(::google::protobuf::Any* value);
+  void unsafe_arena_set_allocated_data(::google::protobuf::Any* value);
+  ::google::protobuf::Any* unsafe_arena_release_data();
+
+  private:
+  const ::google::protobuf::Any& _internal_data() const;
+  ::google::protobuf::Any* _internal_mutable_data();
+
+  public:
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.ExplainStats)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      0, 1, 1,
+      0, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
+
+        inline explicit constexpr Impl_(
+            ::google::protobuf::internal::ConstantInitialized) noexcept;
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena);
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena, const Impl_& from);
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::Any* data_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto;
+};
+
+// ===================================================================
+
+
+
+
+// ===================================================================
+
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif  // __GNUC__
+// -------------------------------------------------------------------
+
+// ExplainStats
+
+// .google.protobuf.Any data = 1;
+inline bool ExplainStats::has_data() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.data_ != nullptr);
+  return value;
+}
+inline const ::google::protobuf::Any& ExplainStats::_internal_data() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::google::protobuf::Any* p = _impl_.data_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Any&>(::google::protobuf::_Any_default_instance_);
+}
+inline const ::google::protobuf::Any& ExplainStats::data() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExplainStats.data)
+  return _internal_data();
+}
+inline void ExplainStats::unsafe_arena_set_allocated_data(::google::protobuf::Any* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.data_);
+  }
+  _impl_.data_ = reinterpret_cast<::google::protobuf::Any*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.ExplainStats.data)
+}
+inline ::google::protobuf::Any* ExplainStats::release_data() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::protobuf::Any* released = _impl_.data_;
+  _impl_.data_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::google::protobuf::Any* ExplainStats::unsafe_arena_release_data() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExplainStats.data)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::protobuf::Any* temp = _impl_.data_;
+  _impl_.data_ = nullptr;
+  return temp;
+}
+inline ::google::protobuf::Any* ExplainStats::_internal_mutable_data() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.data_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::protobuf::Any>(GetArena());
+    _impl_.data_ = reinterpret_cast<::google::protobuf::Any*>(p);
+  }
+  return _impl_.data_;
+}
+inline ::google::protobuf::Any* ExplainStats::mutable_data() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::protobuf::Any* _msg = _internal_mutable_data();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExplainStats.data)
+  return _msg;
+}
+inline void ExplainStats::set_allocated_data(::google::protobuf::Any* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.data_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.data_ = reinterpret_cast<::google::protobuf::Any*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExplainStats.data)
+}
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif  // __GNUC__
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace v1
+}  // namespace firestore
+}  // namespace google
+
+
+// @@protoc_insertion_point(global_scope)
+
+#include "google/protobuf/port_undef.inc"
+
+#endif  // GOOGLE_PROTOBUF_INCLUDED_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto_2epb_2eh
diff --git a/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.cc
index 7cf9b349839..93dfc7f88b2 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -466,6 +466,54 @@ struct ListDocumentsResponseDefaultTypeInternal {
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
     PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ListDocumentsResponseDefaultTypeInternal _ListDocumentsResponse_default_instance_;
 
+inline constexpr ExecutePipelineResponse::Impl_::Impl_(
+    ::_pbi::ConstantInitialized) noexcept
+      : _cached_size_{0},
+        results_{},
+        transaction_(
+            &::google::protobuf::internal::fixed_address_empty_string,
+            ::_pbi::ConstantInitialized()),
+        execution_time_{nullptr},
+        explain_stats_{nullptr} {}
+
+template <typename>
+PROTOBUF_CONSTEXPR ExecutePipelineResponse::ExecutePipelineResponse(::_pbi::ConstantInitialized)
+    : _impl_(::_pbi::ConstantInitialized()) {}
+struct ExecutePipelineResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ExecutePipelineResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ExecutePipelineResponseDefaultTypeInternal() {}
+  union {
+    ExecutePipelineResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ExecutePipelineResponseDefaultTypeInternal _ExecutePipelineResponse_default_instance_;
+
+inline constexpr ExecutePipelineRequest::Impl_::Impl_(
+    ::_pbi::ConstantInitialized) noexcept
+      : database_(
+            &::google::protobuf::internal::fixed_address_empty_string,
+            ::_pbi::ConstantInitialized()),
+        pipeline_type_{},
+        consistency_selector_{},
+        _cached_size_{0},
+        _oneof_case_{} {}
+
+template <typename>
+PROTOBUF_CONSTEXPR ExecutePipelineRequest::ExecutePipelineRequest(::_pbi::ConstantInitialized)
+    : _impl_(::_pbi::ConstantInitialized()) {}
+struct ExecutePipelineRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ExecutePipelineRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ExecutePipelineRequestDefaultTypeInternal() {}
+  union {
+    ExecutePipelineRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ExecutePipelineRequestDefaultTypeInternal _ExecutePipelineRequest_default_instance_;
+
 inline constexpr CreateDocumentRequest::Impl_::Impl_(
     ::_pbi::ConstantInitialized) noexcept
       : _cached_size_{0},
@@ -714,7 +762,7 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
 }  // namespace v1
 }  // namespace firestore
 }  // namespace google
-static ::_pb::Metadata file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[29];
+static ::_pb::Metadata file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[31];
 static const ::_pb::EnumDescriptor* file_level_enum_descriptors_google_2ffirestore_2fv1_2ffirestore_2eproto[1];
 static constexpr const ::_pb::ServiceDescriptor**
     file_level_service_descriptors_google_2ffirestore_2fv1_2ffirestore_2eproto = nullptr;
@@ -944,6 +992,37 @@ const ::uint32_t TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto::offset
     1,
     ~0u,
     ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineRequest, _impl_._oneof_case_[0]),
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineRequest, _impl_.database_),
+    ::_pbi::kInvalidFieldOffsetTag,
+    ::_pbi::kInvalidFieldOffsetTag,
+    ::_pbi::kInvalidFieldOffsetTag,
+    ::_pbi::kInvalidFieldOffsetTag,
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineRequest, _impl_.pipeline_type_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineRequest, _impl_.consistency_selector_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineResponse, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineResponse, _impl_.transaction_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineResponse, _impl_.results_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineResponse, _impl_.execution_time_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineResponse, _impl_.explain_stats_),
+    ~0u,
+    ~0u,
+    0,
+    1,
+    ~0u,  // no _has_bits_
     PROTOBUF_FIELD_OFFSET(::google::firestore::v1::RunAggregationQueryRequest, _internal_metadata_),
     ~0u,  // no _extensions_
     PROTOBUF_FIELD_OFFSET(::google::firestore::v1::RunAggregationQueryRequest, _impl_._oneof_case_[0]),
@@ -1154,20 +1233,22 @@ static const ::_pbi::MigrationSchema
         {182, -1, -1, sizeof(::google::firestore::v1::RollbackRequest)},
         {192, -1, -1, sizeof(::google::firestore::v1::RunQueryRequest)},
         {207, 219, -1, sizeof(::google::firestore::v1::RunQueryResponse)},
-        {223, -1, -1, sizeof(::google::firestore::v1::RunAggregationQueryRequest)},
-        {238, 249, -1, sizeof(::google::firestore::v1::RunAggregationQueryResponse)},
-        {252, 262, -1, sizeof(::google::firestore::v1::WriteRequest_LabelsEntry_DoNotUse)},
-        {264, -1, -1, sizeof(::google::firestore::v1::WriteRequest)},
-        {277, 289, -1, sizeof(::google::firestore::v1::WriteResponse)},
-        {293, 303, -1, sizeof(::google::firestore::v1::ListenRequest_LabelsEntry_DoNotUse)},
-        {305, -1, -1, sizeof(::google::firestore::v1::ListenRequest)},
-        {318, -1, -1, sizeof(::google::firestore::v1::ListenResponse)},
-        {332, -1, -1, sizeof(::google::firestore::v1::Target_DocumentsTarget)},
-        {341, -1, -1, sizeof(::google::firestore::v1::Target_QueryTarget)},
-        {352, 369, -1, sizeof(::google::firestore::v1::Target)},
-        {376, 389, -1, sizeof(::google::firestore::v1::TargetChange)},
-        {394, -1, -1, sizeof(::google::firestore::v1::ListCollectionIdsRequest)},
-        {405, -1, -1, sizeof(::google::firestore::v1::ListCollectionIdsResponse)},
+        {223, -1, -1, sizeof(::google::firestore::v1::ExecutePipelineRequest)},
+        {238, 250, -1, sizeof(::google::firestore::v1::ExecutePipelineResponse)},
+        {254, -1, -1, sizeof(::google::firestore::v1::RunAggregationQueryRequest)},
+        {269, 280, -1, sizeof(::google::firestore::v1::RunAggregationQueryResponse)},
+        {283, 293, -1, sizeof(::google::firestore::v1::WriteRequest_LabelsEntry_DoNotUse)},
+        {295, -1, -1, sizeof(::google::firestore::v1::WriteRequest)},
+        {308, 320, -1, sizeof(::google::firestore::v1::WriteResponse)},
+        {324, 334, -1, sizeof(::google::firestore::v1::ListenRequest_LabelsEntry_DoNotUse)},
+        {336, -1, -1, sizeof(::google::firestore::v1::ListenRequest)},
+        {349, -1, -1, sizeof(::google::firestore::v1::ListenResponse)},
+        {363, -1, -1, sizeof(::google::firestore::v1::Target_DocumentsTarget)},
+        {372, -1, -1, sizeof(::google::firestore::v1::Target_QueryTarget)},
+        {383, 400, -1, sizeof(::google::firestore::v1::Target)},
+        {407, 420, -1, sizeof(::google::firestore::v1::TargetChange)},
+        {425, -1, -1, sizeof(::google::firestore::v1::ListCollectionIdsRequest)},
+        {436, -1, -1, sizeof(::google::firestore::v1::ListCollectionIdsResponse)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -1186,6 +1267,8 @@ static const ::_pb::Message* const file_default_instances[] = {
     &::google::firestore::v1::_RollbackRequest_default_instance_._instance,
     &::google::firestore::v1::_RunQueryRequest_default_instance_._instance,
     &::google::firestore::v1::_RunQueryResponse_default_instance_._instance,
+    &::google::firestore::v1::_ExecutePipelineRequest_default_instance_._instance,
+    &::google::firestore::v1::_ExecutePipelineResponse_default_instance_._instance,
     &::google::firestore::v1::_RunAggregationQueryRequest_default_instance_._instance,
     &::google::firestore::v1::_RunAggregationQueryResponse_default_instance_._instance,
     &::google::firestore::v1::_WriteRequest_LabelsEntry_DoNotUse_default_instance_._instance,
@@ -1204,211 +1287,234 @@ static const ::_pb::Message* const file_default_instances[] = {
 const char descriptor_table_protodef_google_2ffirestore_2fv1_2ffirestore_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
     "\n#google/firestore/v1/firestore.proto\022\023g"
     "oogle.firestore.v1\032\034google/api/annotatio"
-    "ns.proto\032,google/firestore/v1/aggregatio"
-    "n_result.proto\032 google/firestore/v1/comm"
-    "on.proto\032\"google/firestore/v1/document.p"
-    "roto\032\037google/firestore/v1/query.proto\032\037g"
-    "oogle/firestore/v1/write.proto\032\033google/p"
-    "rotobuf/empty.proto\032\037google/protobuf/tim"
-    "estamp.proto\032\036google/protobuf/wrappers.p"
-    "roto\032\027google/rpc/status.proto\"\263\001\n\022GetDoc"
-    "umentRequest\022\014\n\004name\030\001 \001(\t\022/\n\004mask\030\002 \001(\013"
-    "2!.google.firestore.v1.DocumentMask\022\025\n\013t"
-    "ransaction\030\003 \001(\014H\000\022/\n\tread_time\030\005 \001(\0132\032."
-    "google.protobuf.TimestampH\000B\026\n\024consisten"
-    "cy_selector\"\235\002\n\024ListDocumentsRequest\022\016\n\006"
-    "parent\030\001 \001(\t\022\025\n\rcollection_id\030\002 \001(\t\022\021\n\tp"
-    "age_size\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\022\020\n\010or"
-    "der_by\030\006 \001(\t\022/\n\004mask\030\007 \001(\0132!.google.fire"
-    "store.v1.DocumentMask\022\025\n\013transaction\030\010 \001"
-    "(\014H\000\022/\n\tread_time\030\n \001(\0132\032.google.protobu"
-    "f.TimestampH\000\022\024\n\014show_missing\030\014 \001(\010B\026\n\024c"
-    "onsistency_selector\"b\n\025ListDocumentsResp"
-    "onse\0220\n\tdocuments\030\001 \003(\0132\035.google.firesto"
-    "re.v1.Document\022\027\n\017next_page_token\030\002 \001(\t\""
-    "\265\001\n\025CreateDocumentRequest\022\016\n\006parent\030\001 \001("
-    "\t\022\025\n\rcollection_id\030\002 \001(\t\022\023\n\013document_id\030"
-    "\003 \001(\t\022/\n\010document\030\004 \001(\0132\035.google.firesto"
-    "re.v1.Document\022/\n\004mask\030\005 \001(\0132!.google.fi"
-    "restore.v1.DocumentMask\"\356\001\n\025UpdateDocume"
-    "ntRequest\022/\n\010document\030\001 \001(\0132\035.google.fir"
-    "estore.v1.Document\0226\n\013update_mask\030\002 \001(\0132"
-    "!.google.firestore.v1.DocumentMask\022/\n\004ma"
-    "sk\030\003 \001(\0132!.google.firestore.v1.DocumentM"
-    "ask\022;\n\020current_document\030\004 \001(\0132!.google.f"
-    "irestore.v1.Precondition\"b\n\025DeleteDocume"
-    "ntRequest\022\014\n\004name\030\001 \001(\t\022;\n\020current_docum"
-    "ent\030\002 \001(\0132!.google.firestore.v1.Precondi"
-    "tion\"\224\002\n\030BatchGetDocumentsRequest\022\020\n\010dat"
-    "abase\030\001 \001(\t\022\021\n\tdocuments\030\002 \003(\t\022/\n\004mask\030\003"
-    " \001(\0132!.google.firestore.v1.DocumentMask\022"
-    "\025\n\013transaction\030\004 \001(\014H\000\022B\n\017new_transactio"
-    "n\030\005 \001(\0132\'.google.firestore.v1.Transactio"
-    "nOptionsH\000\022/\n\tread_time\030\007 \001(\0132\032.google.p"
-    "rotobuf.TimestampH\000B\026\n\024consistency_selec"
-    "tor\"\254\001\n\031BatchGetDocumentsResponse\022.\n\005fou"
-    "nd\030\001 \001(\0132\035.google.firestore.v1.DocumentH"
-    "\000\022\021\n\007missing\030\002 \001(\tH\000\022\023\n\013transaction\030\003 \001("
-    "\014\022-\n\tread_time\030\004 \001(\0132\032.google.protobuf.T"
-    "imestampB\010\n\006result\"e\n\027BeginTransactionRe"
-    "quest\022\020\n\010database\030\001 \001(\t\0228\n\007options\030\002 \001(\013"
-    "2\'.google.firestore.v1.TransactionOption"
-    "s\"/\n\030BeginTransactionResponse\022\023\n\013transac"
-    "tion\030\001 \001(\014\"b\n\rCommitRequest\022\020\n\010database\030"
-    "\001 \001(\t\022*\n\006writes\030\002 \003(\0132\032.google.firestore"
-    ".v1.Write\022\023\n\013transaction\030\003 \001(\014\"z\n\016Commit"
-    "Response\0227\n\rwrite_results\030\001 \003(\0132 .google"
-    ".firestore.v1.WriteResult\022/\n\013commit_time"
-    "\030\002 \001(\0132\032.google.protobuf.Timestamp\"8\n\017Ro"
-    "llbackRequest\022\020\n\010database\030\001 \001(\t\022\023\n\013trans"
-    "action\030\002 \001(\014\"\225\002\n\017RunQueryRequest\022\016\n\006pare"
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-    "uf.TimestampH\001B\014\n\nquery_typeB\026\n\024consiste"
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-    "stamp\"\343\001\n\014WriteRequest\022\020\n\010database\030\001 \001(\t"
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-    "\004 \001(\014\022=\n\006labels\030\005 \003(\0132-.google.firestore"
-    ".v1.WriteRequest.LabelsEntry\032-\n\013LabelsEn"
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-    "WriteResponse\022\021\n\tstream_id\030\001 \001(\t\022\024\n\014stre"
-    "am_token\030\002 \001(\014\0227\n\rwrite_results\030\003 \003(\0132 ."
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-    "uest.LabelsEntry\032-\n\013LabelsEntry\022\013\n\003key\030\001"
-    " \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001B\017\n\rtarget_change"
-    "\"\325\002\n\016ListenResponse\022:\n\rtarget_change\030\002 \001"
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-    "unt\030\014 \001(\0132\033.google.protobuf.Int32Value\032$"
-    "\n\017DocumentsTarget\022\021\n\tdocuments\030\002 \003(\t\032m\n\013"
-    "QueryTarget\022\016\n\006parent\030\001 \001(\t\022@\n\020structure"
-    "d_query\030\002 \001(\0132$.google.firestore.v1.Stru"
-    "cturedQueryH\000B\014\n\nquery_typeB\r\n\013target_ty"
-    "peB\r\n\013resume_type\"\252\002\n\014TargetChange\022N\n\022ta"
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-    "e.v1.TargetChange.TargetChangeType\022\022\n\nta"
-    "rget_ids\030\002 \003(\005\022!\n\005cause\030\003 \001(\0132\022.google.r"
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-    "time\030\006 \001(\0132\032.google.protobuf.Timestamp\"N"
-    "\n\020TargetChangeType\022\r\n\tNO_CHANGE\020\000\022\007\n\003ADD"
-    "\020\001\022\n\n\006REMOVE\020\002\022\013\n\007CURRENT\020\003\022\t\n\005RESET\020\004\"Q"
-    "\n\030ListCollectionIdsRequest\022\016\n\006parent\030\001 \001"
-    "(\t\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_token\030\003 \001("
-    "\t\"L\n\031ListCollectionIdsResponse\022\026\n\016collec"
-    "tion_ids\030\001 \003(\t\022\027\n\017next_page_token\030\002 \001(\t2"
-    "\236\024\n\tFirestore\022\217\001\n\013GetDocument\022\'.google.f"
-    "irestore.v1.GetDocumentRequest\032\035.google."
-    "firestore.v1.Document\"8\202\323\344\223\0022\0220/v1/{name"
-    "=projects/*/databases/*/documents/*/**}\022"
-    "\262\001\n\rListDocuments\022).google.firestore.v1."
-    "ListDocumentsRequest\032*.google.firestore."
-    "v1.ListDocumentsResponse\"J\202\323\344\223\002D\022B/v1/{p"
-    "arent=projects/*/databases/*/documents/*"
-    "/**}/{collection_id}\022\257\001\n\016CreateDocument\022"
-    "*.google.firestore.v1.CreateDocumentRequ"
-    "est\032\035.google.firestore.v1.Document\"R\202\323\344\223"
-    "\002L\"@/v1/{parent=projects/*/databases/*/d"
-    "ocuments/**}/{collection_id}:\010document\022\250"
-    "\001\n\016UpdateDocument\022*.google.firestore.v1."
-    "UpdateDocumentRequest\032\035.google.firestore"
-    ".v1.Document\"K\202\323\344\223\002E29/v1/{document.name"
-    "=projects/*/databases/*/documents/*/**}:"
-    "\010document\022\216\001\n\016DeleteDocument\022*.google.fi"
-    "restore.v1.DeleteDocumentRequest\032\026.googl"
-    "e.protobuf.Empty\"8\202\323\344\223\0022*0/v1/{name=proj"
-    "ects/*/databases/*/documents/*/**}\022\271\001\n\021B"
-    "atchGetDocuments\022-.google.firestore.v1.B"
-    "atchGetDocumentsRequest\032..google.firesto"
-    "re.v1.BatchGetDocumentsResponse\"C\202\323\344\223\002=\""
-    "8/v1/{database=projects/*/databases/*}/d"
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-    "ion\022,.google.firestore.v1.BeginTransacti"
-    "onRequest\032-.google.firestore.v1.BeginTra"
-    "nsactionResponse\"K\202\323\344\223\002E\"@/v1/{database="
-    "projects/*/databases/*}/documents:beginT"
-    "ransaction:\001*\022\224\001\n\006Commit\022\".google.firest"
-    "ore.v1.CommitRequest\032#.google.firestore."
-    "v1.CommitResponse\"A\202\323\344\223\002;\"6/v1/{database"
-    "=projects/*/databases/*}/documents:commi"
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-    "C\202\323\344\223\002=\"8/v1/{database=projects/*/databa"
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-    "\001\202\323\344\223\002}\"6/v1/{parent=projects/*/database"
-    "s/*/documents}:runQuery:\001*Z@\";/v1/{paren"
+    "ns.proto\032\037google/api/field_behavior.prot"
+    "o\032,google/firestore/v1/aggregation_resul"
+    "t.proto\032 google/firestore/v1/common.prot"
+    "o\032\"google/firestore/v1/document.proto\032\'g"
+    "oogle/firestore/v1/explain_stats.proto\032\""
+    "google/firestore/v1/pipeline.proto\032\037goog"
+    "le/firestore/v1/query.proto\032\037google/fire"
+    "store/v1/write.proto\032\033google/protobuf/em"
+    "pty.proto\032\037google/protobuf/timestamp.pro"
+    "to\032\036google/protobuf/wrappers.proto\032\027goog"
+    "le/rpc/status.proto\"\263\001\n\022GetDocumentReque"
+    "st\022\014\n\004name\030\001 \001(\t\022/\n\004mask\030\002 \001(\0132!.google."
+    "firestore.v1.DocumentMask\022\025\n\013transaction"
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+    "ocumentMask\022\025\n\013transaction\030\010 \001(\014H\000\022/\n\tre"
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+    "pH\000\022\024\n\014show_missing\030\014 \001(\010B\026\n\024consistency"
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+    ".DocumentMask\"\356\001\n\025UpdateDocumentRequest\022"
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+    "\013transaction\030\002 \001(\014\022-\n\tread_time\030\003 \001(\0132\032."
+    "google.protobuf.Timestamp\"\343\001\n\014WriteReque"
+    "st\022\020\n\010database\030\001 \001(\t\022\021\n\tstream_id\030\002 \001(\t\022"
+    "*\n\006writes\030\003 \003(\0132\032.google.firestore.v1.Wr"
+    "ite\022\024\n\014stream_token\030\004 \001(\014\022=\n\006labels\030\005 \003("
+    "\0132-.google.firestore.v1.WriteRequest.Lab"
+    "elsEntry\032-\n\013LabelsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005"
+    "value\030\002 \001(\t:\0028\001\"\242\001\n\rWriteResponse\022\021\n\tstr"
+    "eam_id\030\001 \001(\t\022\024\n\014stream_token\030\002 \001(\014\0227\n\rwr"
+    "ite_results\030\003 \003(\0132 .google.firestore.v1."
+    "WriteResult\022/\n\013commit_time\030\004 \001(\0132\032.googl"
+    "e.protobuf.Timestamp\"\355\001\n\rListenRequest\022\020"
+    "\n\010database\030\001 \001(\t\0221\n\nadd_target\030\002 \001(\0132\033.g"
+    "oogle.firestore.v1.TargetH\000\022\027\n\rremove_ta"
+    "rget\030\003 \001(\005H\000\022>\n\006labels\030\004 \003(\0132..google.fi"
+    "restore.v1.ListenRequest.LabelsEntry\032-\n\013"
+    "LabelsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:"
+    "\0028\001B\017\n\rtarget_change\"\325\002\n\016ListenResponse\022"
+    ":\n\rtarget_change\030\002 \001(\0132!.google.firestor"
+    "e.v1.TargetChangeH\000\022>\n\017document_change\030\003"
+    " \001(\0132#.google.firestore.v1.DocumentChang"
+    "eH\000\022>\n\017document_delete\030\004 \001(\0132#.google.fi"
+    "restore.v1.DocumentDeleteH\000\022>\n\017document_"
+    "remove\030\006 \001(\0132#.google.firestore.v1.Docum"
+    "entRemoveH\000\0226\n\006filter\030\005 \001(\0132$.google.fir"
+    "estore.v1.ExistenceFilterH\000B\017\n\rresponse_"
+    "type\"\326\003\n\006Target\0228\n\005query\030\002 \001(\0132\'.google."
+    "firestore.v1.Target.QueryTargetH\000\022@\n\tdoc"
+    "uments\030\003 \001(\0132+.google.firestore.v1.Targe"
+    "t.DocumentsTargetH\000\022\026\n\014resume_token\030\004 \001("
+    "\014H\001\022/\n\tread_time\030\013 \001(\0132\032.google.protobuf"
+    ".TimestampH\001\022\021\n\ttarget_id\030\005 \001(\005\022\014\n\004once\030"
+    "\006 \001(\010\0223\n\016expected_count\030\014 \001(\0132\033.google.p"
+    "rotobuf.Int32Value\032$\n\017DocumentsTarget\022\021\n"
+    "\tdocuments\030\002 \003(\t\032m\n\013QueryTarget\022\016\n\006paren"
+    "t\030\001 \001(\t\022@\n\020structured_query\030\002 \001(\0132$.goog"
+    "le.firestore.v1.StructuredQueryH\000B\014\n\nque"
+    "ry_typeB\r\n\013target_typeB\r\n\013resume_type\"\252\002"
+    "\n\014TargetChange\022N\n\022target_change_type\030\001 \001"
+    "(\01622.google.firestore.v1.TargetChange.Ta"
+    "rgetChangeType\022\022\n\ntarget_ids\030\002 \003(\005\022!\n\005ca"
+    "use\030\003 \001(\0132\022.google.rpc.Status\022\024\n\014resume_"
+    "token\030\004 \001(\014\022-\n\tread_time\030\006 \001(\0132\032.google."
+    "protobuf.Timestamp\"N\n\020TargetChangeType\022\r"
+    "\n\tNO_CHANGE\020\000\022\007\n\003ADD\020\001\022\n\n\006REMOVE\020\002\022\013\n\007CU"
+    "RRENT\020\003\022\t\n\005RESET\020\004\"Q\n\030ListCollectionIdsR"
+    "equest\022\016\n\006parent\030\001 \001(\t\022\021\n\tpage_size\030\002 \001("
+    "\005\022\022\n\npage_token\030\003 \001(\t\"L\n\031ListCollectionI"
+    "dsResponse\022\026\n\016collection_ids\030\001 \003(\t\022\027\n\017ne"
+    "xt_page_token\030\002 \001(\t2\333\025\n\tFirestore\022\217\001\n\013Ge"
+    "tDocument\022\'.google.firestore.v1.GetDocum"
+    "entRequest\032\035.google.firestore.v1.Documen"
+    "t\"8\202\323\344\223\0022\0220/v1/{name=projects/*/database"
+    "s/*/documents/*/**}\022\262\001\n\rListDocuments\022)."
+    "google.firestore.v1.ListDocumentsRequest"
+    "\032*.google.firestore.v1.ListDocumentsResp"
+    "onse\"J\202\323\344\223\002D\022B/v1/{parent=projects/*/dat"
+    "abases/*/documents/*/**}/{collection_id}"
+    "\022\257\001\n\016CreateDocument\022*.google.firestore.v"
+    "1.CreateDocumentRequest\032\035.google.firesto"
+    "re.v1.Document\"R\202\323\344\223\002L\"@/v1/{parent=proj"
+    "ects/*/databases/*/documents/**}/{collec"
+    "tion_id}:\010document\022\250\001\n\016UpdateDocument\022*."
+    "google.firestore.v1.UpdateDocumentReques"
+    "t\032\035.google.firestore.v1.Document\"K\202\323\344\223\002E"
+    "29/v1/{document.name=projects/*/database"
+    "s/*/documents/*/**}:\010document\022\216\001\n\016Delete"
+    "Document\022*.google.firestore.v1.DeleteDoc"
+    "umentRequest\032\026.google.protobuf.Empty\"8\202\323"
+    "\344\223\0022*0/v1/{name=projects/*/databases/*/d"
+    "ocuments/*/**}\022\271\001\n\021BatchGetDocuments\022-.g"
+    "oogle.firestore.v1.BatchGetDocumentsRequ"
+    "est\032..google.firestore.v1.BatchGetDocume"
+    "ntsResponse\"C\202\323\344\223\002=\"8/v1/{database=proje"
+    "cts/*/databases/*}/documents:batchGet:\001*"
+    "0\001\022\274\001\n\020BeginTransaction\022,.google.firesto"
+    "re.v1.BeginTransactionRequest\032-.google.f"
+    "irestore.v1.BeginTransactionResponse\"K\202\323"
+    "\344\223\002E\"@/v1/{database=projects/*/databases"
+    "/*}/documents:beginTransaction:\001*\022\224\001\n\006Co"
+    "mmit\022\".google.firestore.v1.CommitRequest"
+    "\032#.google.firestore.v1.CommitResponse\"A\202"
+    "\323\344\223\002;\"6/v1/{database=projects/*/database"
+    "s/*}/documents:commit:\001*\022\215\001\n\010Rollback\022$."
+    "google.firestore.v1.RollbackRequest\032\026.go"
+    "ogle.protobuf.Empty\"C\202\323\344\223\002=\"8/v1/{databa"
+    "se=projects/*/databases/*}/documents:rol"
+    "lback:\001*\022\337\001\n\010RunQuery\022$.google.firestore"
+    ".v1.RunQueryRequest\032%.google.firestore.v"
+    "1.RunQueryResponse\"\203\001\202\323\344\223\002}\"6/v1/{parent"
+    "=projects/*/databases/*/documents}:runQu"
+    "ery:\001*Z@\";/v1/{parent=projects/*/databas"
+    "es/*/documents/*/**}:runQuery:\001*0\001\022\272\001\n\017E"
+    "xecutePipeline\022+.google.firestore.v1.Exe"
+    "cutePipelineRequest\032,.google.firestore.v"
+    "1.ExecutePipelineResponse\"J\202\323\344\223\002D\"\?/v1/{"
+    "database=projects/*/databases/*}/documen"
+    "ts:executePipeline:\001*0\001\022\227\002\n\023RunAggregati"
+    "onQuery\022/.google.firestore.v1.RunAggrega"
+    "tionQueryRequest\0320.google.firestore.v1.R"
+    "unAggregationQueryResponse\"\232\001\202\323\344\223\002\223\001\"A/v"
+    "1/{parent=projects/*/databases/*/documen"
+    "ts}:runAggregationQuery:\001*ZK\"F/v1/{paren"
     "t=projects/*/databases/*/documents/*/**}"
-    ":runQuery:\001*0\001\022\227\002\n\023RunAggregationQuery\022/"
-    ".google.firestore.v1.RunAggregationQuery"
-    "Request\0320.google.firestore.v1.RunAggrega"
-    "tionQueryResponse\"\232\001\202\323\344\223\002\223\001\"A/v1/{parent"
-    "=projects/*/databases/*/documents}:runAg"
-    "gregationQuery:\001*ZK\"F/v1/{parent=project"
-    "s/*/databases/*/documents/*/**}:runAggre"
-    "gationQuery:\001*0\001\022\224\001\n\005Write\022!.google.fire"
-    "store.v1.WriteRequest\032\".google.firestore"
-    ".v1.WriteResponse\"@\202\323\344\223\002:\"5/v1/{database"
-    "=projects/*/databases/*}/documents:write"
-    ":\001*(\0010\001\022\230\001\n\006Listen\022\".google.firestore.v1"
-    ".ListenRequest\032#.google.firestore.v1.Lis"
-    "tenResponse\"A\202\323\344\223\002;\"6/v1/{database=proje"
-    "cts/*/databases/*}/documents:listen:\001*(\001"
-    "0\001\022\213\002\n\021ListCollectionIds\022-.google.firest"
-    "ore.v1.ListCollectionIdsRequest\032..google"
-    ".firestore.v1.ListCollectionIdsResponse\""
-    "\226\001\202\323\344\223\002\217\001\"\?/v1/{parent=projects/*/databa"
-    "ses/*/documents}:listCollectionIds:\001*ZI\""
-    "D/v1/{parent=projects/*/databases/*/docu"
-    "ments/*/**}:listCollectionIds:\001*B\262\001\n\027com"
-    ".google.firestore.v1B\016FirestoreProtoP\001Z<"
-    "google.golang.org/genproto/googleapis/fi"
-    "restore/v1;firestore\242\002\004GCFS\252\002\036Google.Clo"
-    "ud.Firestore.V1Beta1\312\002\036Google\\Cloud\\Fire"
-    "store\\V1beta1b\006proto3"
+    ":runAggregationQuery:\001*0\001\022\224\001\n\005Write\022!.go"
+    "ogle.firestore.v1.WriteRequest\032\".google."
+    "firestore.v1.WriteResponse\"@\202\323\344\223\002:\"5/v1/"
+    "{database=projects/*/databases/*}/docume"
+    "nts:write:\001*(\0010\001\022\230\001\n\006Listen\022\".google.fir"
+    "estore.v1.ListenRequest\032#.google.firesto"
+    "re.v1.ListenResponse\"A\202\323\344\223\002;\"6/v1/{datab"
+    "ase=projects/*/databases/*}/documents:li"
+    "sten:\001*(\0010\001\022\213\002\n\021ListCollectionIds\022-.goog"
+    "le.firestore.v1.ListCollectionIdsRequest"
+    "\032..google.firestore.v1.ListCollectionIds"
+    "Response\"\226\001\202\323\344\223\002\217\001\"\?/v1/{parent=projects"
+    "/*/databases/*/documents}:listCollection"
+    "Ids:\001*ZI\"D/v1/{parent=projects/*/databas"
+    "es/*/documents/*/**}:listCollectionIds:\001"
+    "*B\262\001\n\027com.google.firestore.v1B\016Firestore"
+    "ProtoP\001Z<google.golang.org/genproto/goog"
+    "leapis/firestore/v1;firestore\242\002\004GCFS\252\002\036G"
+    "oogle.Cloud.Firestore.V1Beta1\312\002\036Google\\C"
+    "loud\\Firestore\\V1beta1b\006proto3"
 };
-static const ::_pbi::DescriptorTable* const descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_deps[10] =
+static const ::_pbi::DescriptorTable* const descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_deps[13] =
     {
         &::descriptor_table_google_2fapi_2fannotations_2eproto,
+        &::descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto,
         &::descriptor_table_google_2ffirestore_2fv1_2faggregation_5fresult_2eproto,
         &::descriptor_table_google_2ffirestore_2fv1_2fcommon_2eproto,
         &::descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto,
+        &::descriptor_table_google_2ffirestore_2fv1_2fexplain_5fstats_2eproto,
+        &::descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto,
         &::descriptor_table_google_2ffirestore_2fv1_2fquery_2eproto,
         &::descriptor_table_google_2ffirestore_2fv1_2fwrite_2eproto,
         &::descriptor_table_google_2fprotobuf_2fempty_2eproto,
@@ -1420,13 +1526,13 @@ static ::absl::once_flag descriptor_table_google_2ffirestore_2fv1_2ffirestore_2e
 const ::_pbi::DescriptorTable descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto = {
     false,
     false,
-    7981,
+    8790,
     descriptor_table_protodef_google_2ffirestore_2fv1_2ffirestore_2eproto,
     "google/firestore/v1/firestore.proto",
     &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
     descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_deps,
-    10,
-    29,
+    13,
+    31,
     schemas,
     file_default_instances,
     TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto::offsets,
@@ -6306,47 +6412,47 @@ ::google::protobuf::Metadata RunQueryResponse::GetMetadata() const {
 }
 // ===================================================================
 
-class RunAggregationQueryRequest::_Internal {
+class ExecutePipelineRequest::_Internal {
  public:
   static constexpr ::int32_t kOneofCaseOffset =
-    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::RunAggregationQueryRequest, _impl_._oneof_case_);
-  static const ::google::firestore::v1::StructuredAggregationQuery& structured_aggregation_query(const RunAggregationQueryRequest* msg);
-  static const ::google::firestore::v1::TransactionOptions& new_transaction(const RunAggregationQueryRequest* msg);
-  static const ::google::protobuf::Timestamp& read_time(const RunAggregationQueryRequest* msg);
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::ExecutePipelineRequest, _impl_._oneof_case_);
+  static const ::google::firestore::v1::StructuredPipeline& structured_pipeline(const ExecutePipelineRequest* msg);
+  static const ::google::firestore::v1::TransactionOptions& new_transaction(const ExecutePipelineRequest* msg);
+  static const ::google::protobuf::Timestamp& read_time(const ExecutePipelineRequest* msg);
 };
 
-const ::google::firestore::v1::StructuredAggregationQuery& RunAggregationQueryRequest::_Internal::structured_aggregation_query(const RunAggregationQueryRequest* msg) {
-  return *msg->_impl_.query_type_.structured_aggregation_query_;
+const ::google::firestore::v1::StructuredPipeline& ExecutePipelineRequest::_Internal::structured_pipeline(const ExecutePipelineRequest* msg) {
+  return *msg->_impl_.pipeline_type_.structured_pipeline_;
 }
-const ::google::firestore::v1::TransactionOptions& RunAggregationQueryRequest::_Internal::new_transaction(const RunAggregationQueryRequest* msg) {
+const ::google::firestore::v1::TransactionOptions& ExecutePipelineRequest::_Internal::new_transaction(const ExecutePipelineRequest* msg) {
   return *msg->_impl_.consistency_selector_.new_transaction_;
 }
-const ::google::protobuf::Timestamp& RunAggregationQueryRequest::_Internal::read_time(const RunAggregationQueryRequest* msg) {
+const ::google::protobuf::Timestamp& ExecutePipelineRequest::_Internal::read_time(const ExecutePipelineRequest* msg) {
   return *msg->_impl_.consistency_selector_.read_time_;
 }
-void RunAggregationQueryRequest::set_allocated_structured_aggregation_query(::google::firestore::v1::StructuredAggregationQuery* structured_aggregation_query) {
+void ExecutePipelineRequest::set_allocated_structured_pipeline(::google::firestore::v1::StructuredPipeline* structured_pipeline) {
   ::google::protobuf::Arena* message_arena = GetArena();
-  clear_query_type();
-  if (structured_aggregation_query) {
-    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(structured_aggregation_query)->GetArena();
+  clear_pipeline_type();
+  if (structured_pipeline) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(structured_pipeline)->GetArena();
     if (message_arena != submessage_arena) {
-      structured_aggregation_query = ::google::protobuf::internal::GetOwnedMessage(message_arena, structured_aggregation_query, submessage_arena);
+      structured_pipeline = ::google::protobuf::internal::GetOwnedMessage(message_arena, structured_pipeline, submessage_arena);
     }
-    set_has_structured_aggregation_query();
-    _impl_.query_type_.structured_aggregation_query_ = structured_aggregation_query;
+    set_has_structured_pipeline();
+    _impl_.pipeline_type_.structured_pipeline_ = structured_pipeline;
   }
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunAggregationQueryRequest.structured_aggregation_query)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineRequest.structured_pipeline)
 }
-void RunAggregationQueryRequest::clear_structured_aggregation_query() {
+void ExecutePipelineRequest::clear_structured_pipeline() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (query_type_case() == kStructuredAggregationQuery) {
+  if (pipeline_type_case() == kStructuredPipeline) {
     if (GetArena() == nullptr) {
-      delete _impl_.query_type_.structured_aggregation_query_;
+      delete _impl_.pipeline_type_.structured_pipeline_;
     }
-    clear_has_query_type();
+    clear_has_pipeline_type();
   }
 }
-void RunAggregationQueryRequest::set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* new_transaction) {
+void ExecutePipelineRequest::set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* new_transaction) {
   ::google::protobuf::Arena* message_arena = GetArena();
   clear_consistency_selector();
   if (new_transaction) {
@@ -6357,9 +6463,9 @@ void RunAggregationQueryRequest::set_allocated_new_transaction(::google::firesto
     set_has_new_transaction();
     _impl_.consistency_selector_.new_transaction_ = new_transaction;
   }
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunAggregationQueryRequest.new_transaction)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineRequest.new_transaction)
 }
-void RunAggregationQueryRequest::clear_new_transaction() {
+void ExecutePipelineRequest::clear_new_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (consistency_selector_case() == kNewTransaction) {
     if (GetArena() == nullptr) {
@@ -6368,7 +6474,7 @@ void RunAggregationQueryRequest::clear_new_transaction() {
     clear_has_consistency_selector();
   }
 }
-void RunAggregationQueryRequest::set_allocated_read_time(::google::protobuf::Timestamp* read_time) {
+void ExecutePipelineRequest::set_allocated_read_time(::google::protobuf::Timestamp* read_time) {
   ::google::protobuf::Arena* message_arena = GetArena();
   clear_consistency_selector();
   if (read_time) {
@@ -6379,9 +6485,9 @@ void RunAggregationQueryRequest::set_allocated_read_time(::google::protobuf::Tim
     set_has_read_time();
     _impl_.consistency_selector_.read_time_ = read_time;
   }
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunAggregationQueryRequest.read_time)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineRequest.read_time)
 }
-void RunAggregationQueryRequest::clear_read_time() {
+void ExecutePipelineRequest::clear_read_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (consistency_selector_case() == kReadTime) {
     if (GetArena() == nullptr) {
@@ -6390,34 +6496,34 @@ void RunAggregationQueryRequest::clear_read_time() {
     clear_has_consistency_selector();
   }
 }
-RunAggregationQueryRequest::RunAggregationQueryRequest(::google::protobuf::Arena* arena)
+ExecutePipelineRequest::ExecutePipelineRequest(::google::protobuf::Arena* arena)
     : ::google::protobuf::Message(arena) {
   SharedCtor(arena);
-  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.RunAggregationQueryRequest)
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.ExecutePipelineRequest)
 }
-inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryRequest::Impl_::Impl_(
+inline PROTOBUF_NDEBUG_INLINE ExecutePipelineRequest::Impl_::Impl_(
     ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
     const Impl_& from)
-      : parent_(arena, from.parent_),
-        query_type_{},
+      : database_(arena, from.database_),
+        pipeline_type_{},
         consistency_selector_{},
         _cached_size_{0},
         _oneof_case_{from._oneof_case_[0], from._oneof_case_[1]} {}
 
-RunAggregationQueryRequest::RunAggregationQueryRequest(
+ExecutePipelineRequest::ExecutePipelineRequest(
     ::google::protobuf::Arena* arena,
-    const RunAggregationQueryRequest& from)
+    const ExecutePipelineRequest& from)
     : ::google::protobuf::Message(arena) {
-  RunAggregationQueryRequest* const _this = this;
+  ExecutePipelineRequest* const _this = this;
   (void)_this;
   _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
       from._internal_metadata_);
   new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
-  switch (query_type_case()) {
-    case QUERY_TYPE_NOT_SET:
+  switch (pipeline_type_case()) {
+    case PIPELINE_TYPE_NOT_SET:
       break;
-      case kStructuredAggregationQuery:
-        _impl_.query_type_.structured_aggregation_query_ = CreateMaybeMessage<::google::firestore::v1::StructuredAggregationQuery>(arena, *from._impl_.query_type_.structured_aggregation_query_);
+      case kStructuredPipeline:
+        _impl_.pipeline_type_.structured_pipeline_ = CreateMaybeMessage<::google::firestore::v1::StructuredPipeline>(arena, *from._impl_.pipeline_type_.structured_pipeline_);
         break;
   }
   switch (consistency_selector_case()) {
@@ -6434,30 +6540,30 @@ RunAggregationQueryRequest::RunAggregationQueryRequest(
         break;
   }
 
-  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.RunAggregationQueryRequest)
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.ExecutePipelineRequest)
 }
-inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryRequest::Impl_::Impl_(
+inline PROTOBUF_NDEBUG_INLINE ExecutePipelineRequest::Impl_::Impl_(
     ::google::protobuf::internal::InternalVisibility visibility,
     ::google::protobuf::Arena* arena)
-      : parent_(arena),
-        query_type_{},
+      : database_(arena),
+        pipeline_type_{},
         consistency_selector_{},
         _cached_size_{0},
         _oneof_case_{} {}
 
-inline void RunAggregationQueryRequest::SharedCtor(::_pb::Arena* arena) {
+inline void ExecutePipelineRequest::SharedCtor(::_pb::Arena* arena) {
   new (&_impl_) Impl_(internal_visibility(), arena);
 }
-RunAggregationQueryRequest::~RunAggregationQueryRequest() {
-  // @@protoc_insertion_point(destructor:google.firestore.v1.RunAggregationQueryRequest)
+ExecutePipelineRequest::~ExecutePipelineRequest() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.ExecutePipelineRequest)
   _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
   SharedDtor();
 }
-inline void RunAggregationQueryRequest::SharedDtor() {
+inline void ExecutePipelineRequest::SharedDtor() {
   ABSL_DCHECK(GetArena() == nullptr);
-  _impl_.parent_.Destroy();
-  if (has_query_type()) {
-    clear_query_type();
+  _impl_.database_.Destroy();
+  if (has_pipeline_type()) {
+    clear_pipeline_type();
   }
   if (has_consistency_selector()) {
     clear_consistency_selector();
@@ -6465,25 +6571,25 @@ inline void RunAggregationQueryRequest::SharedDtor() {
   _impl_.~Impl_();
 }
 
-void RunAggregationQueryRequest::clear_query_type() {
-// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1.RunAggregationQueryRequest)
+void ExecutePipelineRequest::clear_pipeline_type() {
+// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1.ExecutePipelineRequest)
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  switch (query_type_case()) {
-    case kStructuredAggregationQuery: {
+  switch (pipeline_type_case()) {
+    case kStructuredPipeline: {
       if (GetArena() == nullptr) {
-        delete _impl_.query_type_.structured_aggregation_query_;
+        delete _impl_.pipeline_type_.structured_pipeline_;
       }
       break;
     }
-    case QUERY_TYPE_NOT_SET: {
+    case PIPELINE_TYPE_NOT_SET: {
       break;
     }
   }
-  _impl_._oneof_case_[0] = QUERY_TYPE_NOT_SET;
+  _impl_._oneof_case_[0] = PIPELINE_TYPE_NOT_SET;
 }
 
-void RunAggregationQueryRequest::clear_consistency_selector() {
-// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1.RunAggregationQueryRequest)
+void ExecutePipelineRequest::clear_consistency_selector() {
+// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1.ExecutePipelineRequest)
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   switch (consistency_selector_case()) {
     case kTransaction: {
@@ -6510,20 +6616,20 @@ void RunAggregationQueryRequest::clear_consistency_selector() {
 }
 
 
-PROTOBUF_NOINLINE void RunAggregationQueryRequest::Clear() {
-// @@protoc_insertion_point(message_clear_start:google.firestore.v1.RunAggregationQueryRequest)
+PROTOBUF_NOINLINE void ExecutePipelineRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.ExecutePipelineRequest)
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ::uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  _impl_.parent_.ClearToEmpty();
-  clear_query_type();
+  _impl_.database_.ClearToEmpty();
+  clear_pipeline_type();
   clear_consistency_selector();
   _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
 }
 
-const char* RunAggregationQueryRequest::_InternalParse(
+const char* ExecutePipelineRequest::_InternalParse(
     const char* ptr, ::_pbi::ParseContext* ctx) {
   ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
   return ptr;
@@ -6531,89 +6637,89 @@ const char* RunAggregationQueryRequest::_InternalParse(
 
 
 PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
-const ::_pbi::TcParseTable<0, 5, 3, 61, 2> RunAggregationQueryRequest::_table_ = {
+const ::_pbi::TcParseTable<0, 5, 3, 59, 2> ExecutePipelineRequest::_table_ = {
   {
     0,  // no _has_bits_
     0, // no _extensions_
-    6, 0,  // max_field_number, fast_idx_mask
+    7, 0,  // max_field_number, fast_idx_mask
     offsetof(decltype(_table_), field_lookup_table),
-    4294967236,  // skipmap
+    4294967180,  // skipmap
     offsetof(decltype(_table_), field_entries),
     5,  // num_field_entries
     3,  // num_aux_entries
     offsetof(decltype(_table_), aux_entries),
-    &_RunAggregationQueryRequest_default_instance_._instance,
+    &_ExecutePipelineRequest_default_instance_._instance,
     ::_pbi::TcParser::GenericFallback,  // fallback
   }, {{
-    // string parent = 1;
+    // string database = 1 [(.google.api.field_behavior) = REQUIRED];
     {::_pbi::TcParser::FastUS1,
-     {10, 63, 0, PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.parent_)}},
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ExecutePipelineRequest, _impl_.database_)}},
   }}, {{
     65535, 65535
   }}, {{
-    // string parent = 1;
-    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.parent_), 0, 0,
+    // string database = 1 [(.google.api.field_behavior) = REQUIRED];
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineRequest, _impl_.database_), 0, 0,
     (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
-    // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
-    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.query_type_.structured_aggregation_query_), _Internal::kOneofCaseOffset + 0, 0,
+    // .google.firestore.v1.StructuredPipeline structured_pipeline = 2;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineRequest, _impl_.pipeline_type_.structured_pipeline_), _Internal::kOneofCaseOffset + 0, 0,
     (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
-    // bytes transaction = 4;
-    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.consistency_selector_.transaction_), _Internal::kOneofCaseOffset + 4, 0,
+    // bytes transaction = 5;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineRequest, _impl_.consistency_selector_.transaction_), _Internal::kOneofCaseOffset + 4, 0,
     (0 | ::_fl::kFcOneof | ::_fl::kBytes | ::_fl::kRepAString)},
-    // .google.firestore.v1.TransactionOptions new_transaction = 5;
-    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.consistency_selector_.new_transaction_), _Internal::kOneofCaseOffset + 4, 1,
+    // .google.firestore.v1.TransactionOptions new_transaction = 6;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineRequest, _impl_.consistency_selector_.new_transaction_), _Internal::kOneofCaseOffset + 4, 1,
     (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
-    // .google.protobuf.Timestamp read_time = 6;
-    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.consistency_selector_.read_time_), _Internal::kOneofCaseOffset + 4, 2,
+    // .google.protobuf.Timestamp read_time = 7;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineRequest, _impl_.consistency_selector_.read_time_), _Internal::kOneofCaseOffset + 4, 2,
     (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
   }}, {{
-    {::_pbi::TcParser::GetTable<::google::firestore::v1::StructuredAggregationQuery>()},
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::StructuredPipeline>()},
     {::_pbi::TcParser::GetTable<::google::firestore::v1::TransactionOptions>()},
     {::_pbi::TcParser::GetTable<::google::protobuf::Timestamp>()},
   }}, {{
-    "\56\6\0\0\0\0\0\0"
-    "google.firestore.v1.RunAggregationQueryRequest"
-    "parent"
+    "\52\10\0\0\0\0\0\0"
+    "google.firestore.v1.ExecutePipelineRequest"
+    "database"
   }},
 };
 
-::uint8_t* RunAggregationQueryRequest::_InternalSerialize(
+::uint8_t* ExecutePipelineRequest::_InternalSerialize(
     ::uint8_t* target,
     ::google::protobuf::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.RunAggregationQueryRequest)
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.ExecutePipelineRequest)
   ::uint32_t cached_has_bits = 0;
   (void)cached_has_bits;
 
-  // string parent = 1;
-  if (!this->_internal_parent().empty()) {
-    const std::string& _s = this->_internal_parent();
+  // string database = 1 [(.google.api.field_behavior) = REQUIRED];
+  if (!this->_internal_database().empty()) {
+    const std::string& _s = this->_internal_database();
     ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
-        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.RunAggregationQueryRequest.parent");
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.ExecutePipelineRequest.database");
     target = stream->WriteStringMaybeAliased(1, _s, target);
   }
 
-  // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
-  if (query_type_case() == kStructuredAggregationQuery) {
+  // .google.firestore.v1.StructuredPipeline structured_pipeline = 2;
+  if (pipeline_type_case() == kStructuredPipeline) {
     target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
-        2, _Internal::structured_aggregation_query(this),
-        _Internal::structured_aggregation_query(this).GetCachedSize(), target, stream);
+        2, _Internal::structured_pipeline(this),
+        _Internal::structured_pipeline(this).GetCachedSize(), target, stream);
   }
 
   switch (consistency_selector_case()) {
     case kTransaction: {
       const std::string& _s = this->_internal_transaction();
-      target = stream->WriteBytesMaybeAliased(4, _s, target);
+      target = stream->WriteBytesMaybeAliased(5, _s, target);
       break;
     }
     case kNewTransaction: {
       target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
-          5, _Internal::new_transaction(this),
+          6, _Internal::new_transaction(this),
           _Internal::new_transaction(this).GetCachedSize(), target, stream);
       break;
     }
     case kReadTime: {
       target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
-          6, _Internal::read_time(this),
+          7, _Internal::read_time(this),
           _Internal::read_time(this).GetCachedSize(), target, stream);
       break;
     }
@@ -6625,49 +6731,49 @@ ::uint8_t* RunAggregationQueryRequest::_InternalSerialize(
         ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
             _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
   }
-  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.RunAggregationQueryRequest)
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.ExecutePipelineRequest)
   return target;
 }
 
-::size_t RunAggregationQueryRequest::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.RunAggregationQueryRequest)
+::size_t ExecutePipelineRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.ExecutePipelineRequest)
   ::size_t total_size = 0;
 
   ::uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  // string parent = 1;
-  if (!this->_internal_parent().empty()) {
+  // string database = 1 [(.google.api.field_behavior) = REQUIRED];
+  if (!this->_internal_database().empty()) {
     total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
-                                    this->_internal_parent());
+                                    this->_internal_database());
   }
 
-  switch (query_type_case()) {
-    // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
-    case kStructuredAggregationQuery: {
+  switch (pipeline_type_case()) {
+    // .google.firestore.v1.StructuredPipeline structured_pipeline = 2;
+    case kStructuredPipeline: {
       total_size +=
-          1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.query_type_.structured_aggregation_query_);
+          1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.pipeline_type_.structured_pipeline_);
       break;
     }
-    case QUERY_TYPE_NOT_SET: {
+    case PIPELINE_TYPE_NOT_SET: {
       break;
     }
   }
   switch (consistency_selector_case()) {
-    // bytes transaction = 4;
+    // bytes transaction = 5;
     case kTransaction: {
       total_size += 1 + ::google::protobuf::internal::WireFormatLite::BytesSize(
                                       this->_internal_transaction());
       break;
     }
-    // .google.firestore.v1.TransactionOptions new_transaction = 5;
+    // .google.firestore.v1.TransactionOptions new_transaction = 6;
     case kNewTransaction: {
       total_size +=
           1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.consistency_selector_.new_transaction_);
       break;
     }
-    // .google.protobuf.Timestamp read_time = 6;
+    // .google.protobuf.Timestamp read_time = 7;
     case kReadTime: {
       total_size +=
           1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.consistency_selector_.read_time_);
@@ -6680,32 +6786,32 @@ ::size_t RunAggregationQueryRequest::ByteSizeLong() const {
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
 }
 
-const ::google::protobuf::Message::ClassData RunAggregationQueryRequest::_class_data_ = {
-    RunAggregationQueryRequest::MergeImpl,
+const ::google::protobuf::Message::ClassData ExecutePipelineRequest::_class_data_ = {
+    ExecutePipelineRequest::MergeImpl,
     nullptr,  // OnDemandRegisterArenaDtor
 };
-const ::google::protobuf::Message::ClassData* RunAggregationQueryRequest::GetClassData() const {
+const ::google::protobuf::Message::ClassData* ExecutePipelineRequest::GetClassData() const {
   return &_class_data_;
 }
 
-void RunAggregationQueryRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
-  auto* const _this = static_cast<RunAggregationQueryRequest*>(&to_msg);
-  auto& from = static_cast<const RunAggregationQueryRequest&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.RunAggregationQueryRequest)
+void ExecutePipelineRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ExecutePipelineRequest*>(&to_msg);
+  auto& from = static_cast<const ExecutePipelineRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.ExecutePipelineRequest)
   ABSL_DCHECK_NE(&from, _this);
   ::uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  if (!from._internal_parent().empty()) {
-    _this->_internal_set_parent(from._internal_parent());
+  if (!from._internal_database().empty()) {
+    _this->_internal_set_database(from._internal_database());
   }
-  switch (from.query_type_case()) {
-    case kStructuredAggregationQuery: {
-      _this->_internal_mutable_structured_aggregation_query()->::google::firestore::v1::StructuredAggregationQuery::MergeFrom(
-          from._internal_structured_aggregation_query());
+  switch (from.pipeline_type_case()) {
+    case kStructuredPipeline: {
+      _this->_internal_mutable_structured_pipeline()->::google::firestore::v1::StructuredPipeline::MergeFrom(
+          from._internal_structured_pipeline());
       break;
     }
-    case QUERY_TYPE_NOT_SET: {
+    case PIPELINE_TYPE_NOT_SET: {
       break;
     }
   }
@@ -6731,153 +6837,160 @@ void RunAggregationQueryRequest::MergeImpl(::google::protobuf::Message& to_msg,
   _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
 }
 
-void RunAggregationQueryRequest::CopyFrom(const RunAggregationQueryRequest& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.RunAggregationQueryRequest)
+void ExecutePipelineRequest::CopyFrom(const ExecutePipelineRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.ExecutePipelineRequest)
   if (&from == this) return;
   Clear();
   MergeFrom(from);
 }
 
-PROTOBUF_NOINLINE bool RunAggregationQueryRequest::IsInitialized() const {
+PROTOBUF_NOINLINE bool ExecutePipelineRequest::IsInitialized() const {
   return true;
 }
 
-::_pbi::CachedSize* RunAggregationQueryRequest::AccessCachedSize() const {
+::_pbi::CachedSize* ExecutePipelineRequest::AccessCachedSize() const {
   return &_impl_._cached_size_;
 }
-void RunAggregationQueryRequest::InternalSwap(RunAggregationQueryRequest* PROTOBUF_RESTRICT other) {
+void ExecutePipelineRequest::InternalSwap(ExecutePipelineRequest* PROTOBUF_RESTRICT other) {
   using std::swap;
   auto* arena = GetArena();
   ABSL_DCHECK_EQ(arena, other->GetArena());
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
-  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.parent_, &other->_impl_.parent_, arena);
-  swap(_impl_.query_type_, other->_impl_.query_type_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.database_, &other->_impl_.database_, arena);
+  swap(_impl_.pipeline_type_, other->_impl_.pipeline_type_);
   swap(_impl_.consistency_selector_, other->_impl_.consistency_selector_);
   swap(_impl_._oneof_case_[0], other->_impl_._oneof_case_[0]);
   swap(_impl_._oneof_case_[1], other->_impl_._oneof_case_[1]);
 }
 
-::google::protobuf::Metadata RunAggregationQueryRequest::GetMetadata() const {
+::google::protobuf::Metadata ExecutePipelineRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
       file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[15]);
 }
 // ===================================================================
 
-class RunAggregationQueryResponse::_Internal {
+class ExecutePipelineResponse::_Internal {
  public:
-  using HasBits = decltype(std::declval<RunAggregationQueryResponse>()._impl_._has_bits_);
+  using HasBits = decltype(std::declval<ExecutePipelineResponse>()._impl_._has_bits_);
   static constexpr ::int32_t kHasBitsOffset =
-    8 * PROTOBUF_FIELD_OFFSET(RunAggregationQueryResponse, _impl_._has_bits_);
-  static const ::google::firestore::v1::AggregationResult& result(const RunAggregationQueryResponse* msg);
-  static void set_has_result(HasBits* has_bits) {
+    8 * PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_._has_bits_);
+  static const ::google::protobuf::Timestamp& execution_time(const ExecutePipelineResponse* msg);
+  static void set_has_execution_time(HasBits* has_bits) {
     (*has_bits)[0] |= 1u;
   }
-  static const ::google::protobuf::Timestamp& read_time(const RunAggregationQueryResponse* msg);
-  static void set_has_read_time(HasBits* has_bits) {
+  static const ::google::firestore::v1::ExplainStats& explain_stats(const ExecutePipelineResponse* msg);
+  static void set_has_explain_stats(HasBits* has_bits) {
     (*has_bits)[0] |= 2u;
   }
 };
 
-const ::google::firestore::v1::AggregationResult& RunAggregationQueryResponse::_Internal::result(const RunAggregationQueryResponse* msg) {
-  return *msg->_impl_.result_;
+const ::google::protobuf::Timestamp& ExecutePipelineResponse::_Internal::execution_time(const ExecutePipelineResponse* msg) {
+  return *msg->_impl_.execution_time_;
 }
-const ::google::protobuf::Timestamp& RunAggregationQueryResponse::_Internal::read_time(const RunAggregationQueryResponse* msg) {
-  return *msg->_impl_.read_time_;
+const ::google::firestore::v1::ExplainStats& ExecutePipelineResponse::_Internal::explain_stats(const ExecutePipelineResponse* msg) {
+  return *msg->_impl_.explain_stats_;
 }
-void RunAggregationQueryResponse::clear_result() {
+void ExecutePipelineResponse::clear_results() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (_impl_.result_ != nullptr) _impl_.result_->Clear();
+  _impl_.results_.Clear();
+}
+void ExecutePipelineResponse::clear_execution_time() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (_impl_.execution_time_ != nullptr) _impl_.execution_time_->Clear();
   _impl_._has_bits_[0] &= ~0x00000001u;
 }
-void RunAggregationQueryResponse::clear_read_time() {
+void ExecutePipelineResponse::clear_explain_stats() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (_impl_.read_time_ != nullptr) _impl_.read_time_->Clear();
+  if (_impl_.explain_stats_ != nullptr) _impl_.explain_stats_->Clear();
   _impl_._has_bits_[0] &= ~0x00000002u;
 }
-RunAggregationQueryResponse::RunAggregationQueryResponse(::google::protobuf::Arena* arena)
+ExecutePipelineResponse::ExecutePipelineResponse(::google::protobuf::Arena* arena)
     : ::google::protobuf::Message(arena) {
   SharedCtor(arena);
-  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.RunAggregationQueryResponse)
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.ExecutePipelineResponse)
 }
-inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryResponse::Impl_::Impl_(
+inline PROTOBUF_NDEBUG_INLINE ExecutePipelineResponse::Impl_::Impl_(
     ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
     const Impl_& from)
       : _has_bits_{from._has_bits_},
         _cached_size_{0},
+        results_{visibility, arena, from.results_},
         transaction_(arena, from.transaction_) {}
 
-RunAggregationQueryResponse::RunAggregationQueryResponse(
+ExecutePipelineResponse::ExecutePipelineResponse(
     ::google::protobuf::Arena* arena,
-    const RunAggregationQueryResponse& from)
+    const ExecutePipelineResponse& from)
     : ::google::protobuf::Message(arena) {
-  RunAggregationQueryResponse* const _this = this;
+  ExecutePipelineResponse* const _this = this;
   (void)_this;
   _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
       from._internal_metadata_);
   new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
   ::uint32_t cached_has_bits = _impl_._has_bits_[0];
-  _impl_.result_ = (cached_has_bits & 0x00000001u)
-                ? CreateMaybeMessage<::google::firestore::v1::AggregationResult>(arena, *from._impl_.result_)
+  _impl_.execution_time_ = (cached_has_bits & 0x00000001u)
+                ? CreateMaybeMessage<::google::protobuf::Timestamp>(arena, *from._impl_.execution_time_)
                 : nullptr;
-  _impl_.read_time_ = (cached_has_bits & 0x00000002u)
-                ? CreateMaybeMessage<::google::protobuf::Timestamp>(arena, *from._impl_.read_time_)
+  _impl_.explain_stats_ = (cached_has_bits & 0x00000002u)
+                ? CreateMaybeMessage<::google::firestore::v1::ExplainStats>(arena, *from._impl_.explain_stats_)
                 : nullptr;
 
-  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.RunAggregationQueryResponse)
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.ExecutePipelineResponse)
 }
-inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryResponse::Impl_::Impl_(
+inline PROTOBUF_NDEBUG_INLINE ExecutePipelineResponse::Impl_::Impl_(
     ::google::protobuf::internal::InternalVisibility visibility,
     ::google::protobuf::Arena* arena)
       : _cached_size_{0},
+        results_{visibility, arena},
         transaction_(arena) {}
 
-inline void RunAggregationQueryResponse::SharedCtor(::_pb::Arena* arena) {
+inline void ExecutePipelineResponse::SharedCtor(::_pb::Arena* arena) {
   new (&_impl_) Impl_(internal_visibility(), arena);
   ::memset(reinterpret_cast<char *>(&_impl_) +
-               offsetof(Impl_, result_),
+               offsetof(Impl_, execution_time_),
            0,
-           offsetof(Impl_, read_time_) -
-               offsetof(Impl_, result_) +
-               sizeof(Impl_::read_time_));
+           offsetof(Impl_, explain_stats_) -
+               offsetof(Impl_, execution_time_) +
+               sizeof(Impl_::explain_stats_));
 }
-RunAggregationQueryResponse::~RunAggregationQueryResponse() {
-  // @@protoc_insertion_point(destructor:google.firestore.v1.RunAggregationQueryResponse)
+ExecutePipelineResponse::~ExecutePipelineResponse() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.ExecutePipelineResponse)
   _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
   SharedDtor();
 }
-inline void RunAggregationQueryResponse::SharedDtor() {
+inline void ExecutePipelineResponse::SharedDtor() {
   ABSL_DCHECK(GetArena() == nullptr);
   _impl_.transaction_.Destroy();
-  delete _impl_.result_;
-  delete _impl_.read_time_;
+  delete _impl_.execution_time_;
+  delete _impl_.explain_stats_;
   _impl_.~Impl_();
 }
 
-PROTOBUF_NOINLINE void RunAggregationQueryResponse::Clear() {
-// @@protoc_insertion_point(message_clear_start:google.firestore.v1.RunAggregationQueryResponse)
+PROTOBUF_NOINLINE void ExecutePipelineResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.ExecutePipelineResponse)
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ::uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
+  _impl_.results_.Clear();
   _impl_.transaction_.ClearToEmpty();
   cached_has_bits = _impl_._has_bits_[0];
   if (cached_has_bits & 0x00000003u) {
     if (cached_has_bits & 0x00000001u) {
-      ABSL_DCHECK(_impl_.result_ != nullptr);
-      _impl_.result_->Clear();
+      ABSL_DCHECK(_impl_.execution_time_ != nullptr);
+      _impl_.execution_time_->Clear();
     }
     if (cached_has_bits & 0x00000002u) {
-      ABSL_DCHECK(_impl_.read_time_ != nullptr);
-      _impl_.read_time_->Clear();
+      ABSL_DCHECK(_impl_.explain_stats_ != nullptr);
+      _impl_.explain_stats_->Clear();
     }
   }
   _impl_._has_bits_.Clear();
   _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
 }
 
-const char* RunAggregationQueryResponse::_InternalParse(
+const char* ExecutePipelineResponse::_InternalParse(
     const char* ptr, ::_pbi::ParseContext* ctx) {
   ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
   return ptr;
@@ -6885,11 +6998,794 @@ const char* RunAggregationQueryResponse::_InternalParse(
 
 
 PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
-const ::_pbi::TcParseTable<2, 3, 2, 0, 2> RunAggregationQueryResponse::_table_ = {
+const ::_pbi::TcParseTable<2, 4, 3, 0, 2> ExecutePipelineResponse::_table_ = {
   {
-    PROTOBUF_FIELD_OFFSET(RunAggregationQueryResponse, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_._has_bits_),
     0, // no _extensions_
-    3, 24,  // max_field_number, fast_idx_mask
+    4, 24,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967280,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    4,  // num_field_entries
+    3,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_ExecutePipelineResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .google.firestore.v1.ExplainStats explain_stats = 4;
+    {::_pbi::TcParser::FastMtS1,
+     {34, 1, 2, PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.explain_stats_)}},
+    // bytes transaction = 1;
+    {::_pbi::TcParser::FastBS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.transaction_)}},
+    // repeated .google.firestore.v1.Document results = 2;
+    {::_pbi::TcParser::FastMtR1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.results_)}},
+    // .google.protobuf.Timestamp execution_time = 3;
+    {::_pbi::TcParser::FastMtS1,
+     {26, 0, 1, PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.execution_time_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // bytes transaction = 1;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.transaction_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kBytes | ::_fl::kRepAString)},
+    // repeated .google.firestore.v1.Document results = 2;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.results_), -1, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+    // .google.protobuf.Timestamp execution_time = 3;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.execution_time_), _Internal::kHasBitsOffset + 0, 1,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // .google.firestore.v1.ExplainStats explain_stats = 4;
+    {PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.explain_stats_), _Internal::kHasBitsOffset + 1, 2,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::Document>()},
+    {::_pbi::TcParser::GetTable<::google::protobuf::Timestamp>()},
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::ExplainStats>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* ExecutePipelineResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.ExecutePipelineResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // bytes transaction = 1;
+  if (!this->_internal_transaction().empty()) {
+    const std::string& _s = this->_internal_transaction();
+    target = stream->WriteBytesMaybeAliased(1, _s, target);
+  }
+
+  // repeated .google.firestore.v1.Document results = 2;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_results_size()); i < n; i++) {
+    const auto& repfield = this->_internal_results().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(2, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .google.protobuf.Timestamp execution_time = 3;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+        3, _Internal::execution_time(this),
+        _Internal::execution_time(this).GetCachedSize(), target, stream);
+  }
+
+  // .google.firestore.v1.ExplainStats explain_stats = 4;
+  if (cached_has_bits & 0x00000002u) {
+    target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+        4, _Internal::explain_stats(this),
+        _Internal::explain_stats(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.ExecutePipelineResponse)
+  return target;
+}
+
+::size_t ExecutePipelineResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.ExecutePipelineResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .google.firestore.v1.Document results = 2;
+  total_size += 1UL * this->_internal_results_size();
+  for (const auto& msg : this->_internal_results()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  // bytes transaction = 1;
+  if (!this->_internal_transaction().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::BytesSize(
+                                    this->_internal_transaction());
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    // .google.protobuf.Timestamp execution_time = 3;
+    if (cached_has_bits & 0x00000001u) {
+      total_size +=
+          1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.execution_time_);
+    }
+
+    // .google.firestore.v1.ExplainStats explain_stats = 4;
+    if (cached_has_bits & 0x00000002u) {
+      total_size +=
+          1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.explain_stats_);
+    }
+
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ExecutePipelineResponse::_class_data_ = {
+    ExecutePipelineResponse::MergeImpl,
+    nullptr,  // OnDemandRegisterArenaDtor
+};
+const ::google::protobuf::Message::ClassData* ExecutePipelineResponse::GetClassData() const {
+  return &_class_data_;
+}
+
+void ExecutePipelineResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ExecutePipelineResponse*>(&to_msg);
+  auto& from = static_cast<const ExecutePipelineResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.ExecutePipelineResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_results()->MergeFrom(
+      from._internal_results());
+  if (!from._internal_transaction().empty()) {
+    _this->_internal_set_transaction(from._internal_transaction());
+  }
+  cached_has_bits = from._impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      _this->_internal_mutable_execution_time()->::google::protobuf::Timestamp::MergeFrom(
+          from._internal_execution_time());
+    }
+    if (cached_has_bits & 0x00000002u) {
+      _this->_internal_mutable_explain_stats()->::google::firestore::v1::ExplainStats::MergeFrom(
+          from._internal_explain_stats());
+    }
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ExecutePipelineResponse::CopyFrom(const ExecutePipelineResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.ExecutePipelineResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ExecutePipelineResponse::IsInitialized() const {
+  return true;
+}
+
+::_pbi::CachedSize* ExecutePipelineResponse::AccessCachedSize() const {
+  return &_impl_._cached_size_;
+}
+void ExecutePipelineResponse::InternalSwap(ExecutePipelineResponse* PROTOBUF_RESTRICT other) {
+  using std::swap;
+  auto* arena = GetArena();
+  ABSL_DCHECK_EQ(arena, other->GetArena());
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  _impl_.results_.InternalSwap(&other->_impl_.results_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.transaction_, &other->_impl_.transaction_, arena);
+  ::google::protobuf::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.explain_stats_)
+      + sizeof(ExecutePipelineResponse::_impl_.explain_stats_)
+      - PROTOBUF_FIELD_OFFSET(ExecutePipelineResponse, _impl_.execution_time_)>(
+          reinterpret_cast<char*>(&_impl_.execution_time_),
+          reinterpret_cast<char*>(&other->_impl_.execution_time_));
+}
+
+::google::protobuf::Metadata ExecutePipelineResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[16]);
+}
+// ===================================================================
+
+class RunAggregationQueryRequest::_Internal {
+ public:
+  static constexpr ::int32_t kOneofCaseOffset =
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::RunAggregationQueryRequest, _impl_._oneof_case_);
+  static const ::google::firestore::v1::StructuredAggregationQuery& structured_aggregation_query(const RunAggregationQueryRequest* msg);
+  static const ::google::firestore::v1::TransactionOptions& new_transaction(const RunAggregationQueryRequest* msg);
+  static const ::google::protobuf::Timestamp& read_time(const RunAggregationQueryRequest* msg);
+};
+
+const ::google::firestore::v1::StructuredAggregationQuery& RunAggregationQueryRequest::_Internal::structured_aggregation_query(const RunAggregationQueryRequest* msg) {
+  return *msg->_impl_.query_type_.structured_aggregation_query_;
+}
+const ::google::firestore::v1::TransactionOptions& RunAggregationQueryRequest::_Internal::new_transaction(const RunAggregationQueryRequest* msg) {
+  return *msg->_impl_.consistency_selector_.new_transaction_;
+}
+const ::google::protobuf::Timestamp& RunAggregationQueryRequest::_Internal::read_time(const RunAggregationQueryRequest* msg) {
+  return *msg->_impl_.consistency_selector_.read_time_;
+}
+void RunAggregationQueryRequest::set_allocated_structured_aggregation_query(::google::firestore::v1::StructuredAggregationQuery* structured_aggregation_query) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  clear_query_type();
+  if (structured_aggregation_query) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(structured_aggregation_query)->GetArena();
+    if (message_arena != submessage_arena) {
+      structured_aggregation_query = ::google::protobuf::internal::GetOwnedMessage(message_arena, structured_aggregation_query, submessage_arena);
+    }
+    set_has_structured_aggregation_query();
+    _impl_.query_type_.structured_aggregation_query_ = structured_aggregation_query;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunAggregationQueryRequest.structured_aggregation_query)
+}
+void RunAggregationQueryRequest::clear_structured_aggregation_query() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (query_type_case() == kStructuredAggregationQuery) {
+    if (GetArena() == nullptr) {
+      delete _impl_.query_type_.structured_aggregation_query_;
+    }
+    clear_has_query_type();
+  }
+}
+void RunAggregationQueryRequest::set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* new_transaction) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  clear_consistency_selector();
+  if (new_transaction) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(new_transaction)->GetArena();
+    if (message_arena != submessage_arena) {
+      new_transaction = ::google::protobuf::internal::GetOwnedMessage(message_arena, new_transaction, submessage_arena);
+    }
+    set_has_new_transaction();
+    _impl_.consistency_selector_.new_transaction_ = new_transaction;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunAggregationQueryRequest.new_transaction)
+}
+void RunAggregationQueryRequest::clear_new_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (consistency_selector_case() == kNewTransaction) {
+    if (GetArena() == nullptr) {
+      delete _impl_.consistency_selector_.new_transaction_;
+    }
+    clear_has_consistency_selector();
+  }
+}
+void RunAggregationQueryRequest::set_allocated_read_time(::google::protobuf::Timestamp* read_time) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  clear_consistency_selector();
+  if (read_time) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(read_time)->GetArena();
+    if (message_arena != submessage_arena) {
+      read_time = ::google::protobuf::internal::GetOwnedMessage(message_arena, read_time, submessage_arena);
+    }
+    set_has_read_time();
+    _impl_.consistency_selector_.read_time_ = read_time;
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunAggregationQueryRequest.read_time)
+}
+void RunAggregationQueryRequest::clear_read_time() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (consistency_selector_case() == kReadTime) {
+    if (GetArena() == nullptr) {
+      delete _impl_.consistency_selector_.read_time_;
+    }
+    clear_has_consistency_selector();
+  }
+}
+RunAggregationQueryRequest::RunAggregationQueryRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.RunAggregationQueryRequest)
+}
+inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryRequest::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
+    const Impl_& from)
+      : parent_(arena, from.parent_),
+        query_type_{},
+        consistency_selector_{},
+        _cached_size_{0},
+        _oneof_case_{from._oneof_case_[0], from._oneof_case_[1]} {}
+
+RunAggregationQueryRequest::RunAggregationQueryRequest(
+    ::google::protobuf::Arena* arena,
+    const RunAggregationQueryRequest& from)
+    : ::google::protobuf::Message(arena) {
+  RunAggregationQueryRequest* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
+  switch (query_type_case()) {
+    case QUERY_TYPE_NOT_SET:
+      break;
+      case kStructuredAggregationQuery:
+        _impl_.query_type_.structured_aggregation_query_ = CreateMaybeMessage<::google::firestore::v1::StructuredAggregationQuery>(arena, *from._impl_.query_type_.structured_aggregation_query_);
+        break;
+  }
+  switch (consistency_selector_case()) {
+    case CONSISTENCY_SELECTOR_NOT_SET:
+      break;
+      case kTransaction:
+        new (&_impl_.consistency_selector_.transaction_) decltype(_impl_.consistency_selector_.transaction_){arena, from._impl_.consistency_selector_.transaction_};
+        break;
+      case kNewTransaction:
+        _impl_.consistency_selector_.new_transaction_ = CreateMaybeMessage<::google::firestore::v1::TransactionOptions>(arena, *from._impl_.consistency_selector_.new_transaction_);
+        break;
+      case kReadTime:
+        _impl_.consistency_selector_.read_time_ = CreateMaybeMessage<::google::protobuf::Timestamp>(arena, *from._impl_.consistency_selector_.read_time_);
+        break;
+  }
+
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.RunAggregationQueryRequest)
+}
+inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryRequest::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility,
+    ::google::protobuf::Arena* arena)
+      : parent_(arena),
+        query_type_{},
+        consistency_selector_{},
+        _cached_size_{0},
+        _oneof_case_{} {}
+
+inline void RunAggregationQueryRequest::SharedCtor(::_pb::Arena* arena) {
+  new (&_impl_) Impl_(internal_visibility(), arena);
+}
+RunAggregationQueryRequest::~RunAggregationQueryRequest() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.RunAggregationQueryRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void RunAggregationQueryRequest::SharedDtor() {
+  ABSL_DCHECK(GetArena() == nullptr);
+  _impl_.parent_.Destroy();
+  if (has_query_type()) {
+    clear_query_type();
+  }
+  if (has_consistency_selector()) {
+    clear_consistency_selector();
+  }
+  _impl_.~Impl_();
+}
+
+void RunAggregationQueryRequest::clear_query_type() {
+// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1.RunAggregationQueryRequest)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  switch (query_type_case()) {
+    case kStructuredAggregationQuery: {
+      if (GetArena() == nullptr) {
+        delete _impl_.query_type_.structured_aggregation_query_;
+      }
+      break;
+    }
+    case QUERY_TYPE_NOT_SET: {
+      break;
+    }
+  }
+  _impl_._oneof_case_[0] = QUERY_TYPE_NOT_SET;
+}
+
+void RunAggregationQueryRequest::clear_consistency_selector() {
+// @@protoc_insertion_point(one_of_clear_start:google.firestore.v1.RunAggregationQueryRequest)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  switch (consistency_selector_case()) {
+    case kTransaction: {
+      _impl_.consistency_selector_.transaction_.Destroy();
+      break;
+    }
+    case kNewTransaction: {
+      if (GetArena() == nullptr) {
+        delete _impl_.consistency_selector_.new_transaction_;
+      }
+      break;
+    }
+    case kReadTime: {
+      if (GetArena() == nullptr) {
+        delete _impl_.consistency_selector_.read_time_;
+      }
+      break;
+    }
+    case CONSISTENCY_SELECTOR_NOT_SET: {
+      break;
+    }
+  }
+  _impl_._oneof_case_[1] = CONSISTENCY_SELECTOR_NOT_SET;
+}
+
+
+PROTOBUF_NOINLINE void RunAggregationQueryRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.RunAggregationQueryRequest)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.parent_.ClearToEmpty();
+  clear_query_type();
+  clear_consistency_selector();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* RunAggregationQueryRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 5, 3, 61, 2> RunAggregationQueryRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    6, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967236,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    5,  // num_field_entries
+    3,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_RunAggregationQueryRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string parent = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.parent_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string parent = 1;
+    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.parent_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
+    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.query_type_.structured_aggregation_query_), _Internal::kOneofCaseOffset + 0, 0,
+    (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
+    // bytes transaction = 4;
+    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.consistency_selector_.transaction_), _Internal::kOneofCaseOffset + 4, 0,
+    (0 | ::_fl::kFcOneof | ::_fl::kBytes | ::_fl::kRepAString)},
+    // .google.firestore.v1.TransactionOptions new_transaction = 5;
+    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.consistency_selector_.new_transaction_), _Internal::kOneofCaseOffset + 4, 1,
+    (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
+    // .google.protobuf.Timestamp read_time = 6;
+    {PROTOBUF_FIELD_OFFSET(RunAggregationQueryRequest, _impl_.consistency_selector_.read_time_), _Internal::kOneofCaseOffset + 4, 2,
+    (0 | ::_fl::kFcOneof | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::StructuredAggregationQuery>()},
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::TransactionOptions>()},
+    {::_pbi::TcParser::GetTable<::google::protobuf::Timestamp>()},
+  }}, {{
+    "\56\6\0\0\0\0\0\0"
+    "google.firestore.v1.RunAggregationQueryRequest"
+    "parent"
+  }},
+};
+
+::uint8_t* RunAggregationQueryRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.RunAggregationQueryRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string parent = 1;
+  if (!this->_internal_parent().empty()) {
+    const std::string& _s = this->_internal_parent();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.RunAggregationQueryRequest.parent");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
+  if (query_type_case() == kStructuredAggregationQuery) {
+    target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+        2, _Internal::structured_aggregation_query(this),
+        _Internal::structured_aggregation_query(this).GetCachedSize(), target, stream);
+  }
+
+  switch (consistency_selector_case()) {
+    case kTransaction: {
+      const std::string& _s = this->_internal_transaction();
+      target = stream->WriteBytesMaybeAliased(4, _s, target);
+      break;
+    }
+    case kNewTransaction: {
+      target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+          5, _Internal::new_transaction(this),
+          _Internal::new_transaction(this).GetCachedSize(), target, stream);
+      break;
+    }
+    case kReadTime: {
+      target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+          6, _Internal::read_time(this),
+          _Internal::read_time(this).GetCachedSize(), target, stream);
+      break;
+    }
+    default:
+      break;
+  }
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.RunAggregationQueryRequest)
+  return target;
+}
+
+::size_t RunAggregationQueryRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.RunAggregationQueryRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string parent = 1;
+  if (!this->_internal_parent().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_parent());
+  }
+
+  switch (query_type_case()) {
+    // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
+    case kStructuredAggregationQuery: {
+      total_size +=
+          1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.query_type_.structured_aggregation_query_);
+      break;
+    }
+    case QUERY_TYPE_NOT_SET: {
+      break;
+    }
+  }
+  switch (consistency_selector_case()) {
+    // bytes transaction = 4;
+    case kTransaction: {
+      total_size += 1 + ::google::protobuf::internal::WireFormatLite::BytesSize(
+                                      this->_internal_transaction());
+      break;
+    }
+    // .google.firestore.v1.TransactionOptions new_transaction = 5;
+    case kNewTransaction: {
+      total_size +=
+          1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.consistency_selector_.new_transaction_);
+      break;
+    }
+    // .google.protobuf.Timestamp read_time = 6;
+    case kReadTime: {
+      total_size +=
+          1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.consistency_selector_.read_time_);
+      break;
+    }
+    case CONSISTENCY_SELECTOR_NOT_SET: {
+      break;
+    }
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData RunAggregationQueryRequest::_class_data_ = {
+    RunAggregationQueryRequest::MergeImpl,
+    nullptr,  // OnDemandRegisterArenaDtor
+};
+const ::google::protobuf::Message::ClassData* RunAggregationQueryRequest::GetClassData() const {
+  return &_class_data_;
+}
+
+void RunAggregationQueryRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<RunAggregationQueryRequest*>(&to_msg);
+  auto& from = static_cast<const RunAggregationQueryRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.RunAggregationQueryRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_parent().empty()) {
+    _this->_internal_set_parent(from._internal_parent());
+  }
+  switch (from.query_type_case()) {
+    case kStructuredAggregationQuery: {
+      _this->_internal_mutable_structured_aggregation_query()->::google::firestore::v1::StructuredAggregationQuery::MergeFrom(
+          from._internal_structured_aggregation_query());
+      break;
+    }
+    case QUERY_TYPE_NOT_SET: {
+      break;
+    }
+  }
+  switch (from.consistency_selector_case()) {
+    case kTransaction: {
+      _this->_internal_set_transaction(from._internal_transaction());
+      break;
+    }
+    case kNewTransaction: {
+      _this->_internal_mutable_new_transaction()->::google::firestore::v1::TransactionOptions::MergeFrom(
+          from._internal_new_transaction());
+      break;
+    }
+    case kReadTime: {
+      _this->_internal_mutable_read_time()->::google::protobuf::Timestamp::MergeFrom(
+          from._internal_read_time());
+      break;
+    }
+    case CONSISTENCY_SELECTOR_NOT_SET: {
+      break;
+    }
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void RunAggregationQueryRequest::CopyFrom(const RunAggregationQueryRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.RunAggregationQueryRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool RunAggregationQueryRequest::IsInitialized() const {
+  return true;
+}
+
+::_pbi::CachedSize* RunAggregationQueryRequest::AccessCachedSize() const {
+  return &_impl_._cached_size_;
+}
+void RunAggregationQueryRequest::InternalSwap(RunAggregationQueryRequest* PROTOBUF_RESTRICT other) {
+  using std::swap;
+  auto* arena = GetArena();
+  ABSL_DCHECK_EQ(arena, other->GetArena());
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.parent_, &other->_impl_.parent_, arena);
+  swap(_impl_.query_type_, other->_impl_.query_type_);
+  swap(_impl_.consistency_selector_, other->_impl_.consistency_selector_);
+  swap(_impl_._oneof_case_[0], other->_impl_._oneof_case_[0]);
+  swap(_impl_._oneof_case_[1], other->_impl_._oneof_case_[1]);
+}
+
+::google::protobuf::Metadata RunAggregationQueryRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[17]);
+}
+// ===================================================================
+
+class RunAggregationQueryResponse::_Internal {
+ public:
+  using HasBits = decltype(std::declval<RunAggregationQueryResponse>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(RunAggregationQueryResponse, _impl_._has_bits_);
+  static const ::google::firestore::v1::AggregationResult& result(const RunAggregationQueryResponse* msg);
+  static void set_has_result(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+  static const ::google::protobuf::Timestamp& read_time(const RunAggregationQueryResponse* msg);
+  static void set_has_read_time(HasBits* has_bits) {
+    (*has_bits)[0] |= 2u;
+  }
+};
+
+const ::google::firestore::v1::AggregationResult& RunAggregationQueryResponse::_Internal::result(const RunAggregationQueryResponse* msg) {
+  return *msg->_impl_.result_;
+}
+const ::google::protobuf::Timestamp& RunAggregationQueryResponse::_Internal::read_time(const RunAggregationQueryResponse* msg) {
+  return *msg->_impl_.read_time_;
+}
+void RunAggregationQueryResponse::clear_result() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (_impl_.result_ != nullptr) _impl_.result_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+void RunAggregationQueryResponse::clear_read_time() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (_impl_.read_time_ != nullptr) _impl_.read_time_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000002u;
+}
+RunAggregationQueryResponse::RunAggregationQueryResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.RunAggregationQueryResponse)
+}
+inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryResponse::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
+    const Impl_& from)
+      : _has_bits_{from._has_bits_},
+        _cached_size_{0},
+        transaction_(arena, from.transaction_) {}
+
+RunAggregationQueryResponse::RunAggregationQueryResponse(
+    ::google::protobuf::Arena* arena,
+    const RunAggregationQueryResponse& from)
+    : ::google::protobuf::Message(arena) {
+  RunAggregationQueryResponse* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
+  ::uint32_t cached_has_bits = _impl_._has_bits_[0];
+  _impl_.result_ = (cached_has_bits & 0x00000001u)
+                ? CreateMaybeMessage<::google::firestore::v1::AggregationResult>(arena, *from._impl_.result_)
+                : nullptr;
+  _impl_.read_time_ = (cached_has_bits & 0x00000002u)
+                ? CreateMaybeMessage<::google::protobuf::Timestamp>(arena, *from._impl_.read_time_)
+                : nullptr;
+
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.RunAggregationQueryResponse)
+}
+inline PROTOBUF_NDEBUG_INLINE RunAggregationQueryResponse::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility,
+    ::google::protobuf::Arena* arena)
+      : _cached_size_{0},
+        transaction_(arena) {}
+
+inline void RunAggregationQueryResponse::SharedCtor(::_pb::Arena* arena) {
+  new (&_impl_) Impl_(internal_visibility(), arena);
+  ::memset(reinterpret_cast<char *>(&_impl_) +
+               offsetof(Impl_, result_),
+           0,
+           offsetof(Impl_, read_time_) -
+               offsetof(Impl_, result_) +
+               sizeof(Impl_::read_time_));
+}
+RunAggregationQueryResponse::~RunAggregationQueryResponse() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.RunAggregationQueryResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void RunAggregationQueryResponse::SharedDtor() {
+  ABSL_DCHECK(GetArena() == nullptr);
+  _impl_.transaction_.Destroy();
+  delete _impl_.result_;
+  delete _impl_.read_time_;
+  _impl_.~Impl_();
+}
+
+PROTOBUF_NOINLINE void RunAggregationQueryResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.RunAggregationQueryResponse)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.transaction_.ClearToEmpty();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      ABSL_DCHECK(_impl_.result_ != nullptr);
+      _impl_.result_->Clear();
+    }
+    if (cached_has_bits & 0x00000002u) {
+      ABSL_DCHECK(_impl_.read_time_ != nullptr);
+      _impl_.read_time_->Clear();
+    }
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* RunAggregationQueryResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<2, 3, 2, 0, 2> RunAggregationQueryResponse::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(RunAggregationQueryResponse, _impl_._has_bits_),
+    0, // no _extensions_
+    3, 24,  // max_field_number, fast_idx_mask
     offsetof(decltype(_table_), field_lookup_table),
     4294967288,  // skipmap
     offsetof(decltype(_table_), field_entries),
@@ -7062,7 +7958,7 @@ void RunAggregationQueryResponse::InternalSwap(RunAggregationQueryResponse* PROT
 ::google::protobuf::Metadata RunAggregationQueryResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[16]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[18]);
 }
 // ===================================================================
 
@@ -7072,7 +7968,7 @@ WriteRequest_LabelsEntry_DoNotUse::WriteRequest_LabelsEntry_DoNotUse(::google::p
 ::google::protobuf::Metadata WriteRequest_LabelsEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[17]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[19]);
 }
 // ===================================================================
 
@@ -7400,7 +8296,7 @@ void WriteRequest::InternalSwap(WriteRequest* PROTOBUF_RESTRICT other) {
 ::google::protobuf::Metadata WriteRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[18]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[20]);
 }
 // ===================================================================
 
@@ -7702,7 +8598,7 @@ void WriteResponse::InternalSwap(WriteResponse* PROTOBUF_RESTRICT other) {
 ::google::protobuf::Metadata WriteResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[19]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[21]);
 }
 // ===================================================================
 
@@ -7712,7 +8608,7 @@ ListenRequest_LabelsEntry_DoNotUse::ListenRequest_LabelsEntry_DoNotUse(::google:
 ::google::protobuf::Metadata ListenRequest_LabelsEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[20]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[22]);
 }
 // ===================================================================
 
@@ -8069,7 +8965,7 @@ void ListenRequest::InternalSwap(ListenRequest* PROTOBUF_RESTRICT other) {
 ::google::protobuf::Metadata ListenRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[21]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[23]);
 }
 // ===================================================================
 
@@ -8539,7 +9435,7 @@ void ListenResponse::InternalSwap(ListenResponse* PROTOBUF_RESTRICT other) {
 ::google::protobuf::Metadata ListenResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[22]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[24]);
 }
 // ===================================================================
 
@@ -8724,7 +9620,7 @@ void Target_DocumentsTarget::InternalSwap(Target_DocumentsTarget* PROTOBUF_RESTR
 ::google::protobuf::Metadata Target_DocumentsTarget::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[23]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[25]);
 }
 // ===================================================================
 
@@ -9008,7 +9904,7 @@ void Target_QueryTarget::InternalSwap(Target_QueryTarget* PROTOBUF_RESTRICT othe
 ::google::protobuf::Metadata Target_QueryTarget::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[24]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[26]);
 }
 // ===================================================================
 
@@ -9536,7 +10432,7 @@ void Target::InternalSwap(Target* PROTOBUF_RESTRICT other) {
 ::google::protobuf::Metadata Target::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[25]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[27]);
 }
 // ===================================================================
 
@@ -9899,7 +10795,7 @@ void TargetChange::InternalSwap(TargetChange* PROTOBUF_RESTRICT other) {
 ::google::protobuf::Metadata TargetChange::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[26]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[28]);
 }
 // ===================================================================
 
@@ -10145,7 +11041,7 @@ void ListCollectionIdsRequest::InternalSwap(ListCollectionIdsRequest* PROTOBUF_R
 ::google::protobuf::Metadata ListCollectionIdsRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[27]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[29]);
 }
 // ===================================================================
 
@@ -10361,7 +11257,7 @@ void ListCollectionIdsResponse::InternalSwap(ListCollectionIdsResponse* PROTOBUF
 ::google::protobuf::Metadata ListCollectionIdsResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2ffirestore_2eproto_once,
-      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[28]);
+      file_level_metadata_google_2ffirestore_2fv1_2ffirestore_2eproto[30]);
 }
 // @@protoc_insertion_point(namespace_scope)
 }  // namespace v1
diff --git a/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.h b/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.h
index 65e0c8bc1b1..d0678e25d8a 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/v1/firestore.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -55,9 +55,12 @@
 #include "google/protobuf/generated_enum_reflection.h"
 #include "google/protobuf/unknown_field_set.h"
 #include "google/api/annotations.pb.h"
+#include "google/api/field_behavior.pb.h"
 #include "google/firestore/v1/aggregation_result.pb.h"
 #include "google/firestore/v1/common.pb.h"
 #include "google/firestore/v1/document.pb.h"
+#include "google/firestore/v1/explain_stats.pb.h"
+#include "google/firestore/v1/pipeline.pb.h"
 #include "google/firestore/v1/query.pb.h"
 #include "google/firestore/v1/write.pb.h"
 #include "google/protobuf/empty.pb.h"
@@ -112,6 +115,12 @@ extern CreateDocumentRequestDefaultTypeInternal _CreateDocumentRequest_default_i
 class DeleteDocumentRequest;
 struct DeleteDocumentRequestDefaultTypeInternal;
 extern DeleteDocumentRequestDefaultTypeInternal _DeleteDocumentRequest_default_instance_;
+class ExecutePipelineRequest;
+struct ExecutePipelineRequestDefaultTypeInternal;
+extern ExecutePipelineRequestDefaultTypeInternal _ExecutePipelineRequest_default_instance_;
+class ExecutePipelineResponse;
+struct ExecutePipelineResponseDefaultTypeInternal;
+extern ExecutePipelineResponseDefaultTypeInternal _ExecutePipelineResponse_default_instance_;
 class GetDocumentRequest;
 struct GetDocumentRequestDefaultTypeInternal;
 extern GetDocumentRequestDefaultTypeInternal _GetDocumentRequest_default_instance_;
@@ -315,7 +324,7 @@ class Target_DocumentsTarget final :
                &_Target_DocumentsTarget_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    23;
+    25;
 
   friend void swap(Target_DocumentsTarget& a, Target_DocumentsTarget& b) {
     a.Swap(&b);
@@ -737,7 +746,7 @@ class ListCollectionIdsResponse final :
                &_ListCollectionIdsResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    28;
+    30;
 
   friend void swap(ListCollectionIdsResponse& a, ListCollectionIdsResponse& b) {
     a.Swap(&b);
@@ -948,7 +957,7 @@ class ListCollectionIdsRequest final :
                &_ListCollectionIdsRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    27;
+    29;
 
   friend void swap(ListCollectionIdsRequest& a, ListCollectionIdsRequest& b) {
     a.Swap(&b);
@@ -1934,7 +1943,7 @@ class TargetChange final :
                &_TargetChange_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    26;
+    28;
 
   friend void swap(TargetChange& a, TargetChange& b) {
     a.Swap(&b);
@@ -2405,7 +2414,7 @@ class WriteResponse final :
                &_WriteResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    19;
+    21;
 
   friend void swap(WriteResponse& a, WriteResponse& b) {
     a.Swap(&b);
@@ -3813,7 +3822,7 @@ class RunAggregationQueryResponse final :
                &_RunAggregationQueryResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    16;
+    18;
 
   friend void swap(RunAggregationQueryResponse& a, RunAggregationQueryResponse& b) {
     a.Swap(&b);
@@ -4171,26 +4180,26 @@ class ListDocumentsResponse final :
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class CreateDocumentRequest final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.CreateDocumentRequest) */ {
+class ExecutePipelineResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.ExecutePipelineResponse) */ {
  public:
-  inline CreateDocumentRequest() : CreateDocumentRequest(nullptr) {}
-  ~CreateDocumentRequest() override;
+  inline ExecutePipelineResponse() : ExecutePipelineResponse(nullptr) {}
+  ~ExecutePipelineResponse() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR CreateDocumentRequest(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR ExecutePipelineResponse(::google::protobuf::internal::ConstantInitialized);
 
-  inline CreateDocumentRequest(const CreateDocumentRequest& from)
-      : CreateDocumentRequest(nullptr, from) {}
-  CreateDocumentRequest(CreateDocumentRequest&& from) noexcept
-    : CreateDocumentRequest() {
+  inline ExecutePipelineResponse(const ExecutePipelineResponse& from)
+      : ExecutePipelineResponse(nullptr, from) {}
+  ExecutePipelineResponse(ExecutePipelineResponse&& from) noexcept
+    : ExecutePipelineResponse() {
     *this = ::std::move(from);
   }
 
-  inline CreateDocumentRequest& operator=(const CreateDocumentRequest& from) {
+  inline ExecutePipelineResponse& operator=(const ExecutePipelineResponse& from) {
     CopyFrom(from);
     return *this;
   }
-  inline CreateDocumentRequest& operator=(CreateDocumentRequest&& from) noexcept {
+  inline ExecutePipelineResponse& operator=(ExecutePipelineResponse&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -4222,20 +4231,20 @@ class CreateDocumentRequest final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const CreateDocumentRequest& default_instance() {
+  static const ExecutePipelineResponse& default_instance() {
     return *internal_default_instance();
   }
-  static inline const CreateDocumentRequest* internal_default_instance() {
-    return reinterpret_cast<const CreateDocumentRequest*>(
-               &_CreateDocumentRequest_default_instance_);
+  static inline const ExecutePipelineResponse* internal_default_instance() {
+    return reinterpret_cast<const ExecutePipelineResponse*>(
+               &_ExecutePipelineResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    3;
+    16;
 
-  friend void swap(CreateDocumentRequest& a, CreateDocumentRequest& b) {
+  friend void swap(ExecutePipelineResponse& a, ExecutePipelineResponse& b) {
     a.Swap(&b);
   }
-  inline void Swap(CreateDocumentRequest* other) {
+  inline void Swap(ExecutePipelineResponse* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -4248,7 +4257,7 @@ class CreateDocumentRequest final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(CreateDocumentRequest* other) {
+  void UnsafeArenaSwap(ExecutePipelineResponse* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -4256,14 +4265,14 @@ class CreateDocumentRequest final :
 
   // implements Message ----------------------------------------------
 
-  CreateDocumentRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<CreateDocumentRequest>(arena);
+  ExecutePipelineResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ExecutePipelineResponse>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const CreateDocumentRequest& from);
+  void CopyFrom(const ExecutePipelineResponse& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const CreateDocumentRequest& from) {
-    CreateDocumentRequest::MergeImpl(*this, from);
+  void MergeFrom( const ExecutePipelineResponse& from) {
+    ExecutePipelineResponse::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -4281,16 +4290,16 @@ class CreateDocumentRequest final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(CreateDocumentRequest* other);
+  void InternalSwap(ExecutePipelineResponse* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.CreateDocumentRequest";
+    return "google.firestore.v1.ExecutePipelineResponse";
   }
   protected:
-  explicit CreateDocumentRequest(::google::protobuf::Arena* arena);
-  CreateDocumentRequest(::google::protobuf::Arena* arena, const CreateDocumentRequest& from);
+  explicit ExecutePipelineResponse(::google::protobuf::Arena* arena);
+  ExecutePipelineResponse(::google::protobuf::Arena* arena, const ExecutePipelineResponse& from);
   public:
 
   static const ClassData _class_data_;
@@ -4303,98 +4312,83 @@ class CreateDocumentRequest final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kParentFieldNumber = 1,
-    kCollectionIdFieldNumber = 2,
-    kDocumentIdFieldNumber = 3,
-    kDocumentFieldNumber = 4,
-    kMaskFieldNumber = 5,
+    kResultsFieldNumber = 2,
+    kTransactionFieldNumber = 1,
+    kExecutionTimeFieldNumber = 3,
+    kExplainStatsFieldNumber = 4,
   };
-  // string parent = 1;
-  void clear_parent() ;
-  const std::string& parent() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_parent(Arg_&& arg, Args_... args);
-  std::string* mutable_parent();
-  PROTOBUF_NODISCARD std::string* release_parent();
-  void set_allocated_parent(std::string* value);
-
+  // repeated .google.firestore.v1.Document results = 2;
+  int results_size() const;
   private:
-  const std::string& _internal_parent() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
-      const std::string& value);
-  std::string* _internal_mutable_parent();
+  int _internal_results_size() const;
 
   public:
-  // string collection_id = 2;
-  void clear_collection_id() ;
-  const std::string& collection_id() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_collection_id(Arg_&& arg, Args_... args);
-  std::string* mutable_collection_id();
-  PROTOBUF_NODISCARD std::string* release_collection_id();
-  void set_allocated_collection_id(std::string* value);
-
+  void clear_results() ;
+  ::google::firestore::v1::Document* mutable_results(int index);
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Document >*
+      mutable_results();
   private:
-  const std::string& _internal_collection_id() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_collection_id(
-      const std::string& value);
-  std::string* _internal_mutable_collection_id();
-
+  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>& _internal_results() const;
+  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>* _internal_mutable_results();
   public:
-  // string document_id = 3;
-  void clear_document_id() ;
-  const std::string& document_id() const;
+  const ::google::firestore::v1::Document& results(int index) const;
+  ::google::firestore::v1::Document* add_results();
+  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Document >&
+      results() const;
+  // bytes transaction = 1;
+  void clear_transaction() ;
+  const std::string& transaction() const;
   template <typename Arg_ = const std::string&, typename... Args_>
-  void set_document_id(Arg_&& arg, Args_... args);
-  std::string* mutable_document_id();
-  PROTOBUF_NODISCARD std::string* release_document_id();
-  void set_allocated_document_id(std::string* value);
+  void set_transaction(Arg_&& arg, Args_... args);
+  std::string* mutable_transaction();
+  PROTOBUF_NODISCARD std::string* release_transaction();
+  void set_allocated_transaction(std::string* value);
 
   private:
-  const std::string& _internal_document_id() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_document_id(
+  const std::string& _internal_transaction() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_transaction(
       const std::string& value);
-  std::string* _internal_mutable_document_id();
+  std::string* _internal_mutable_transaction();
 
   public:
-  // .google.firestore.v1.Document document = 4;
-  bool has_document() const;
-  void clear_document() ;
-  const ::google::firestore::v1::Document& document() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::Document* release_document();
-  ::google::firestore::v1::Document* mutable_document();
-  void set_allocated_document(::google::firestore::v1::Document* value);
-  void unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value);
-  ::google::firestore::v1::Document* unsafe_arena_release_document();
+  // .google.protobuf.Timestamp execution_time = 3;
+  bool has_execution_time() const;
+  void clear_execution_time() ;
+  const ::google::protobuf::Timestamp& execution_time() const;
+  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_execution_time();
+  ::google::protobuf::Timestamp* mutable_execution_time();
+  void set_allocated_execution_time(::google::protobuf::Timestamp* value);
+  void unsafe_arena_set_allocated_execution_time(::google::protobuf::Timestamp* value);
+  ::google::protobuf::Timestamp* unsafe_arena_release_execution_time();
 
   private:
-  const ::google::firestore::v1::Document& _internal_document() const;
-  ::google::firestore::v1::Document* _internal_mutable_document();
+  const ::google::protobuf::Timestamp& _internal_execution_time() const;
+  ::google::protobuf::Timestamp* _internal_mutable_execution_time();
 
   public:
-  // .google.firestore.v1.DocumentMask mask = 5;
-  bool has_mask() const;
-  void clear_mask() ;
-  const ::google::firestore::v1::DocumentMask& mask() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentMask* release_mask();
-  ::google::firestore::v1::DocumentMask* mutable_mask();
-  void set_allocated_mask(::google::firestore::v1::DocumentMask* value);
-  void unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value);
-  ::google::firestore::v1::DocumentMask* unsafe_arena_release_mask();
+  // .google.firestore.v1.ExplainStats explain_stats = 4;
+  bool has_explain_stats() const;
+  void clear_explain_stats() ;
+  const ::google::firestore::v1::ExplainStats& explain_stats() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::ExplainStats* release_explain_stats();
+  ::google::firestore::v1::ExplainStats* mutable_explain_stats();
+  void set_allocated_explain_stats(::google::firestore::v1::ExplainStats* value);
+  void unsafe_arena_set_allocated_explain_stats(::google::firestore::v1::ExplainStats* value);
+  ::google::firestore::v1::ExplainStats* unsafe_arena_release_explain_stats();
 
   private:
-  const ::google::firestore::v1::DocumentMask& _internal_mask() const;
-  ::google::firestore::v1::DocumentMask* _internal_mutable_mask();
+  const ::google::firestore::v1::ExplainStats& _internal_explain_stats() const;
+  ::google::firestore::v1::ExplainStats* _internal_mutable_explain_stats();
 
   public:
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.CreateDocumentRequest)
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.ExecutePipelineResponse)
  private:
   class _Internal;
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      3, 5, 2,
-      80, 2>
+      2, 4, 3,
+      0, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
@@ -4412,37 +4406,36 @@ class CreateDocumentRequest final :
                               ::google::protobuf::Arena* arena, const Impl_& from);
     ::google::protobuf::internal::HasBits<1> _has_bits_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
-    ::google::protobuf::internal::ArenaStringPtr parent_;
-    ::google::protobuf::internal::ArenaStringPtr collection_id_;
-    ::google::protobuf::internal::ArenaStringPtr document_id_;
-    ::google::firestore::v1::Document* document_;
-    ::google::firestore::v1::DocumentMask* mask_;
+    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Document > results_;
+    ::google::protobuf::internal::ArenaStringPtr transaction_;
+    ::google::protobuf::Timestamp* execution_time_;
+    ::google::firestore::v1::ExplainStats* explain_stats_;
     PROTOBUF_TSAN_DECLARE_MEMBER
   };
   union { Impl_ _impl_; };
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class BatchGetDocumentsResponse final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.BatchGetDocumentsResponse) */ {
+class ExecutePipelineRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.ExecutePipelineRequest) */ {
  public:
-  inline BatchGetDocumentsResponse() : BatchGetDocumentsResponse(nullptr) {}
-  ~BatchGetDocumentsResponse() override;
+  inline ExecutePipelineRequest() : ExecutePipelineRequest(nullptr) {}
+  ~ExecutePipelineRequest() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR BatchGetDocumentsResponse(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR ExecutePipelineRequest(::google::protobuf::internal::ConstantInitialized);
 
-  inline BatchGetDocumentsResponse(const BatchGetDocumentsResponse& from)
-      : BatchGetDocumentsResponse(nullptr, from) {}
-  BatchGetDocumentsResponse(BatchGetDocumentsResponse&& from) noexcept
-    : BatchGetDocumentsResponse() {
+  inline ExecutePipelineRequest(const ExecutePipelineRequest& from)
+      : ExecutePipelineRequest(nullptr, from) {}
+  ExecutePipelineRequest(ExecutePipelineRequest&& from) noexcept
+    : ExecutePipelineRequest() {
     *this = ::std::move(from);
   }
 
-  inline BatchGetDocumentsResponse& operator=(const BatchGetDocumentsResponse& from) {
+  inline ExecutePipelineRequest& operator=(const ExecutePipelineRequest& from) {
     CopyFrom(from);
     return *this;
   }
-  inline BatchGetDocumentsResponse& operator=(BatchGetDocumentsResponse&& from) noexcept {
+  inline ExecutePipelineRequest& operator=(ExecutePipelineRequest&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -4474,26 +4467,32 @@ class BatchGetDocumentsResponse final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const BatchGetDocumentsResponse& default_instance() {
+  static const ExecutePipelineRequest& default_instance() {
     return *internal_default_instance();
   }
-  enum ResultCase {
-    kFound = 1,
-    kMissing = 2,
-    RESULT_NOT_SET = 0,
+  enum PipelineTypeCase {
+    kStructuredPipeline = 2,
+    PIPELINE_TYPE_NOT_SET = 0,
   };
 
-  static inline const BatchGetDocumentsResponse* internal_default_instance() {
-    return reinterpret_cast<const BatchGetDocumentsResponse*>(
-               &_BatchGetDocumentsResponse_default_instance_);
+  enum ConsistencySelectorCase {
+    kTransaction = 5,
+    kNewTransaction = 6,
+    kReadTime = 7,
+    CONSISTENCY_SELECTOR_NOT_SET = 0,
+  };
+
+  static inline const ExecutePipelineRequest* internal_default_instance() {
+    return reinterpret_cast<const ExecutePipelineRequest*>(
+               &_ExecutePipelineRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    7;
+    15;
 
-  friend void swap(BatchGetDocumentsResponse& a, BatchGetDocumentsResponse& b) {
+  friend void swap(ExecutePipelineRequest& a, ExecutePipelineRequest& b) {
     a.Swap(&b);
   }
-  inline void Swap(BatchGetDocumentsResponse* other) {
+  inline void Swap(ExecutePipelineRequest* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -4506,7 +4505,7 @@ class BatchGetDocumentsResponse final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(BatchGetDocumentsResponse* other) {
+  void UnsafeArenaSwap(ExecutePipelineRequest* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -4514,14 +4513,14 @@ class BatchGetDocumentsResponse final :
 
   // implements Message ----------------------------------------------
 
-  BatchGetDocumentsResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<BatchGetDocumentsResponse>(arena);
+  ExecutePipelineRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ExecutePipelineRequest>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const BatchGetDocumentsResponse& from);
+  void CopyFrom(const ExecutePipelineRequest& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const BatchGetDocumentsResponse& from) {
-    BatchGetDocumentsResponse::MergeImpl(*this, from);
+  void MergeFrom( const ExecutePipelineRequest& from) {
+    ExecutePipelineRequest::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -4539,16 +4538,16 @@ class BatchGetDocumentsResponse final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(BatchGetDocumentsResponse* other);
+  void InternalSwap(ExecutePipelineRequest* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.BatchGetDocumentsResponse";
+    return "google.firestore.v1.ExecutePipelineRequest";
   }
   protected:
-  explicit BatchGetDocumentsResponse(::google::protobuf::Arena* arena);
-  BatchGetDocumentsResponse(::google::protobuf::Arena* arena, const BatchGetDocumentsResponse& from);
+  explicit ExecutePipelineRequest(::google::protobuf::Arena* arena);
+  ExecutePipelineRequest(::google::protobuf::Arena* arena, const ExecutePipelineRequest& from);
   public:
 
   static const ClassData _class_data_;
@@ -4561,12 +4560,49 @@ class BatchGetDocumentsResponse final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kTransactionFieldNumber = 3,
-    kReadTimeFieldNumber = 4,
-    kFoundFieldNumber = 1,
-    kMissingFieldNumber = 2,
+    kDatabaseFieldNumber = 1,
+    kStructuredPipelineFieldNumber = 2,
+    kTransactionFieldNumber = 5,
+    kNewTransactionFieldNumber = 6,
+    kReadTimeFieldNumber = 7,
   };
-  // bytes transaction = 3;
+  // string database = 1 [(.google.api.field_behavior) = REQUIRED];
+  void clear_database() ;
+  const std::string& database() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_database(Arg_&& arg, Args_... args);
+  std::string* mutable_database();
+  PROTOBUF_NODISCARD std::string* release_database();
+  void set_allocated_database(std::string* value);
+
+  private:
+  const std::string& _internal_database() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_database(
+      const std::string& value);
+  std::string* _internal_mutable_database();
+
+  public:
+  // .google.firestore.v1.StructuredPipeline structured_pipeline = 2;
+  bool has_structured_pipeline() const;
+  private:
+  bool _internal_has_structured_pipeline() const;
+
+  public:
+  void clear_structured_pipeline() ;
+  const ::google::firestore::v1::StructuredPipeline& structured_pipeline() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::StructuredPipeline* release_structured_pipeline();
+  ::google::firestore::v1::StructuredPipeline* mutable_structured_pipeline();
+  void set_allocated_structured_pipeline(::google::firestore::v1::StructuredPipeline* value);
+  void unsafe_arena_set_allocated_structured_pipeline(::google::firestore::v1::StructuredPipeline* value);
+  ::google::firestore::v1::StructuredPipeline* unsafe_arena_release_structured_pipeline();
+
+  private:
+  const ::google::firestore::v1::StructuredPipeline& _internal_structured_pipeline() const;
+  ::google::firestore::v1::StructuredPipeline* _internal_mutable_structured_pipeline();
+
+  public:
+  // bytes transaction = 5;
+  bool has_transaction() const;
   void clear_transaction() ;
   const std::string& transaction() const;
   template <typename Arg_ = const std::string&, typename... Args_>
@@ -4582,8 +4618,31 @@ class BatchGetDocumentsResponse final :
   std::string* _internal_mutable_transaction();
 
   public:
-  // .google.protobuf.Timestamp read_time = 4;
+  // .google.firestore.v1.TransactionOptions new_transaction = 6;
+  bool has_new_transaction() const;
+  private:
+  bool _internal_has_new_transaction() const;
+
+  public:
+  void clear_new_transaction() ;
+  const ::google::firestore::v1::TransactionOptions& new_transaction() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::TransactionOptions* release_new_transaction();
+  ::google::firestore::v1::TransactionOptions* mutable_new_transaction();
+  void set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
+  void unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
+  ::google::firestore::v1::TransactionOptions* unsafe_arena_release_new_transaction();
+
+  private:
+  const ::google::firestore::v1::TransactionOptions& _internal_new_transaction() const;
+  ::google::firestore::v1::TransactionOptions* _internal_mutable_new_transaction();
+
+  public:
+  // .google.protobuf.Timestamp read_time = 7;
   bool has_read_time() const;
+  private:
+  bool _internal_has_read_time() const;
+
+  public:
   void clear_read_time() ;
   const ::google::protobuf::Timestamp& read_time() const;
   PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
@@ -4597,57 +4656,28 @@ class BatchGetDocumentsResponse final :
   ::google::protobuf::Timestamp* _internal_mutable_read_time();
 
   public:
-  // .google.firestore.v1.Document found = 1;
-  bool has_found() const;
-  private:
-  bool _internal_has_found() const;
+  void clear_pipeline_type();
+  PipelineTypeCase pipeline_type_case() const;
+  void clear_consistency_selector();
+  ConsistencySelectorCase consistency_selector_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.ExecutePipelineRequest)
+ private:
+  class _Internal;
+  void set_has_structured_pipeline();
+  void set_has_transaction();
+  void set_has_new_transaction();
+  void set_has_read_time();
 
-  public:
-  void clear_found() ;
-  const ::google::firestore::v1::Document& found() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::Document* release_found();
-  ::google::firestore::v1::Document* mutable_found();
-  void set_allocated_found(::google::firestore::v1::Document* value);
-  void unsafe_arena_set_allocated_found(::google::firestore::v1::Document* value);
-  ::google::firestore::v1::Document* unsafe_arena_release_found();
+  inline bool has_pipeline_type() const;
+  inline void clear_has_pipeline_type();
 
-  private:
-  const ::google::firestore::v1::Document& _internal_found() const;
-  ::google::firestore::v1::Document* _internal_mutable_found();
-
-  public:
-  // string missing = 2;
-  bool has_missing() const;
-  void clear_missing() ;
-  const std::string& missing() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_missing(Arg_&& arg, Args_... args);
-  std::string* mutable_missing();
-  PROTOBUF_NODISCARD std::string* release_missing();
-  void set_allocated_missing(std::string* value);
-
-  private:
-  const std::string& _internal_missing() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_missing(
-      const std::string& value);
-  std::string* _internal_mutable_missing();
-
-  public:
-  void clear_result();
-  ResultCase result_case() const;
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.BatchGetDocumentsResponse)
- private:
-  class _Internal;
-  void set_has_found();
-  void set_has_missing();
-
-  inline bool has_result() const;
-  inline void clear_has_result();
+  inline bool has_consistency_selector() const;
+  inline void clear_has_consistency_selector();
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      1, 4, 2,
-      61, 2>
+      0, 5, 3,
+      59, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
@@ -4663,17 +4693,21 @@ class BatchGetDocumentsResponse final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    ::google::protobuf::internal::HasBits<1> _has_bits_;
-    mutable ::google::protobuf::internal::CachedSize _cached_size_;
-    ::google::protobuf::internal::ArenaStringPtr transaction_;
-    ::google::protobuf::Timestamp* read_time_;
-    union ResultUnion {
-      constexpr ResultUnion() : _constinit_{} {}
+    ::google::protobuf::internal::ArenaStringPtr database_;
+    union PipelineTypeUnion {
+      constexpr PipelineTypeUnion() : _constinit_{} {}
         ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::firestore::v1::Document* found_;
-      ::google::protobuf::internal::ArenaStringPtr missing_;
-    } result_;
-    ::uint32_t _oneof_case_[1];
+      ::google::firestore::v1::StructuredPipeline* structured_pipeline_;
+    } pipeline_type_;
+    union ConsistencySelectorUnion {
+      constexpr ConsistencySelectorUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::protobuf::internal::ArenaStringPtr transaction_;
+      ::google::firestore::v1::TransactionOptions* new_transaction_;
+      ::google::protobuf::Timestamp* read_time_;
+    } consistency_selector_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::uint32_t _oneof_case_[2];
 
     PROTOBUF_TSAN_DECLARE_MEMBER
   };
@@ -4681,26 +4715,26 @@ class BatchGetDocumentsResponse final :
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class WriteRequest final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.WriteRequest) */ {
+class CreateDocumentRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.CreateDocumentRequest) */ {
  public:
-  inline WriteRequest() : WriteRequest(nullptr) {}
-  ~WriteRequest() override;
+  inline CreateDocumentRequest() : CreateDocumentRequest(nullptr) {}
+  ~CreateDocumentRequest() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR WriteRequest(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR CreateDocumentRequest(::google::protobuf::internal::ConstantInitialized);
 
-  inline WriteRequest(const WriteRequest& from)
-      : WriteRequest(nullptr, from) {}
-  WriteRequest(WriteRequest&& from) noexcept
-    : WriteRequest() {
+  inline CreateDocumentRequest(const CreateDocumentRequest& from)
+      : CreateDocumentRequest(nullptr, from) {}
+  CreateDocumentRequest(CreateDocumentRequest&& from) noexcept
+    : CreateDocumentRequest() {
     *this = ::std::move(from);
   }
 
-  inline WriteRequest& operator=(const WriteRequest& from) {
+  inline CreateDocumentRequest& operator=(const CreateDocumentRequest& from) {
     CopyFrom(from);
     return *this;
   }
-  inline WriteRequest& operator=(WriteRequest&& from) noexcept {
+  inline CreateDocumentRequest& operator=(CreateDocumentRequest&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -4732,20 +4766,20 @@ class WriteRequest final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const WriteRequest& default_instance() {
+  static const CreateDocumentRequest& default_instance() {
     return *internal_default_instance();
   }
-  static inline const WriteRequest* internal_default_instance() {
-    return reinterpret_cast<const WriteRequest*>(
-               &_WriteRequest_default_instance_);
+  static inline const CreateDocumentRequest* internal_default_instance() {
+    return reinterpret_cast<const CreateDocumentRequest*>(
+               &_CreateDocumentRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    18;
+    3;
 
-  friend void swap(WriteRequest& a, WriteRequest& b) {
+  friend void swap(CreateDocumentRequest& a, CreateDocumentRequest& b) {
     a.Swap(&b);
   }
-  inline void Swap(WriteRequest* other) {
+  inline void Swap(CreateDocumentRequest* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -4758,7 +4792,7 @@ class WriteRequest final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(WriteRequest* other) {
+  void UnsafeArenaSwap(CreateDocumentRequest* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -4766,14 +4800,14 @@ class WriteRequest final :
 
   // implements Message ----------------------------------------------
 
-  WriteRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<WriteRequest>(arena);
+  CreateDocumentRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CreateDocumentRequest>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const WriteRequest& from);
+  void CopyFrom(const CreateDocumentRequest& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const WriteRequest& from) {
-    WriteRequest::MergeImpl(*this, from);
+  void MergeFrom( const CreateDocumentRequest& from) {
+    CreateDocumentRequest::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -4791,16 +4825,16 @@ class WriteRequest final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(WriteRequest* other);
+  void InternalSwap(CreateDocumentRequest* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.WriteRequest";
+    return "google.firestore.v1.CreateDocumentRequest";
   }
   protected:
-  explicit WriteRequest(::google::protobuf::Arena* arena);
-  WriteRequest(::google::protobuf::Arena* arena, const WriteRequest& from);
+  explicit CreateDocumentRequest(::google::protobuf::Arena* arena);
+  CreateDocumentRequest(::google::protobuf::Arena* arena, const CreateDocumentRequest& from);
   public:
 
   static const ClassData _class_data_;
@@ -4810,105 +4844,101 @@ class WriteRequest final :
 
   // nested types ----------------------------------------------------
 
-
   // accessors -------------------------------------------------------
 
   enum : int {
-    kWritesFieldNumber = 3,
-    kLabelsFieldNumber = 5,
-    kDatabaseFieldNumber = 1,
-    kStreamIdFieldNumber = 2,
-    kStreamTokenFieldNumber = 4,
+    kParentFieldNumber = 1,
+    kCollectionIdFieldNumber = 2,
+    kDocumentIdFieldNumber = 3,
+    kDocumentFieldNumber = 4,
+    kMaskFieldNumber = 5,
   };
-  // repeated .google.firestore.v1.Write writes = 3;
-  int writes_size() const;
-  private:
-  int _internal_writes_size() const;
+  // string parent = 1;
+  void clear_parent() ;
+  const std::string& parent() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_parent(Arg_&& arg, Args_... args);
+  std::string* mutable_parent();
+  PROTOBUF_NODISCARD std::string* release_parent();
+  void set_allocated_parent(std::string* value);
 
-  public:
-  void clear_writes() ;
-  ::google::firestore::v1::Write* mutable_writes(int index);
-  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >*
-      mutable_writes();
-  private:
-  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>& _internal_writes() const;
-  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>* _internal_mutable_writes();
-  public:
-  const ::google::firestore::v1::Write& writes(int index) const;
-  ::google::firestore::v1::Write* add_writes();
-  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >&
-      writes() const;
-  // map<string, string> labels = 5;
-  int labels_size() const;
   private:
-  int _internal_labels_size() const;
+  const std::string& _internal_parent() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
+      const std::string& value);
+  std::string* _internal_mutable_parent();
 
   public:
-  void clear_labels() ;
-  const ::google::protobuf::Map<std::string, std::string>& labels() const;
-  ::google::protobuf::Map<std::string, std::string>* mutable_labels();
+  // string collection_id = 2;
+  void clear_collection_id() ;
+  const std::string& collection_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_collection_id(Arg_&& arg, Args_... args);
+  std::string* mutable_collection_id();
+  PROTOBUF_NODISCARD std::string* release_collection_id();
+  void set_allocated_collection_id(std::string* value);
 
   private:
-  const ::google::protobuf::Map<std::string, std::string>& _internal_labels() const;
-  ::google::protobuf::Map<std::string, std::string>* _internal_mutable_labels();
+  const std::string& _internal_collection_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_collection_id(
+      const std::string& value);
+  std::string* _internal_mutable_collection_id();
 
   public:
-  // string database = 1;
-  void clear_database() ;
-  const std::string& database() const;
+  // string document_id = 3;
+  void clear_document_id() ;
+  const std::string& document_id() const;
   template <typename Arg_ = const std::string&, typename... Args_>
-  void set_database(Arg_&& arg, Args_... args);
-  std::string* mutable_database();
-  PROTOBUF_NODISCARD std::string* release_database();
-  void set_allocated_database(std::string* value);
+  void set_document_id(Arg_&& arg, Args_... args);
+  std::string* mutable_document_id();
+  PROTOBUF_NODISCARD std::string* release_document_id();
+  void set_allocated_document_id(std::string* value);
 
   private:
-  const std::string& _internal_database() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_database(
+  const std::string& _internal_document_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_document_id(
       const std::string& value);
-  std::string* _internal_mutable_database();
+  std::string* _internal_mutable_document_id();
 
   public:
-  // string stream_id = 2;
-  void clear_stream_id() ;
-  const std::string& stream_id() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_stream_id(Arg_&& arg, Args_... args);
-  std::string* mutable_stream_id();
-  PROTOBUF_NODISCARD std::string* release_stream_id();
-  void set_allocated_stream_id(std::string* value);
+  // .google.firestore.v1.Document document = 4;
+  bool has_document() const;
+  void clear_document() ;
+  const ::google::firestore::v1::Document& document() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Document* release_document();
+  ::google::firestore::v1::Document* mutable_document();
+  void set_allocated_document(::google::firestore::v1::Document* value);
+  void unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value);
+  ::google::firestore::v1::Document* unsafe_arena_release_document();
 
   private:
-  const std::string& _internal_stream_id() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_stream_id(
-      const std::string& value);
-  std::string* _internal_mutable_stream_id();
+  const ::google::firestore::v1::Document& _internal_document() const;
+  ::google::firestore::v1::Document* _internal_mutable_document();
 
   public:
-  // bytes stream_token = 4;
-  void clear_stream_token() ;
-  const std::string& stream_token() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_stream_token(Arg_&& arg, Args_... args);
-  std::string* mutable_stream_token();
-  PROTOBUF_NODISCARD std::string* release_stream_token();
-  void set_allocated_stream_token(std::string* value);
+  // .google.firestore.v1.DocumentMask mask = 5;
+  bool has_mask() const;
+  void clear_mask() ;
+  const ::google::firestore::v1::DocumentMask& mask() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentMask* release_mask();
+  ::google::firestore::v1::DocumentMask* mutable_mask();
+  void set_allocated_mask(::google::firestore::v1::DocumentMask* value);
+  void unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value);
+  ::google::firestore::v1::DocumentMask* unsafe_arena_release_mask();
 
   private:
-  const std::string& _internal_stream_token() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_stream_token(
-      const std::string& value);
-  std::string* _internal_mutable_stream_token();
+  const ::google::firestore::v1::DocumentMask& _internal_mask() const;
+  ::google::firestore::v1::DocumentMask* _internal_mutable_mask();
 
   public:
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.WriteRequest)
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.CreateDocumentRequest)
  private:
   class _Internal;
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      2, 5, 2,
-      64, 2>
+      3, 5, 2,
+      80, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
@@ -4924,41 +4954,39 @@ class WriteRequest final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write > writes_;
-    ::google::protobuf::internal::MapField<WriteRequest_LabelsEntry_DoNotUse, std::string, std::string,
-                      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
-                      ::google::protobuf::internal::WireFormatLite::TYPE_STRING>
-        labels_;
-    ::google::protobuf::internal::ArenaStringPtr database_;
-    ::google::protobuf::internal::ArenaStringPtr stream_id_;
-    ::google::protobuf::internal::ArenaStringPtr stream_token_;
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::internal::ArenaStringPtr parent_;
+    ::google::protobuf::internal::ArenaStringPtr collection_id_;
+    ::google::protobuf::internal::ArenaStringPtr document_id_;
+    ::google::firestore::v1::Document* document_;
+    ::google::firestore::v1::DocumentMask* mask_;
     PROTOBUF_TSAN_DECLARE_MEMBER
   };
   union { Impl_ _impl_; };
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class Target_QueryTarget final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Target.QueryTarget) */ {
+class BatchGetDocumentsResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.BatchGetDocumentsResponse) */ {
  public:
-  inline Target_QueryTarget() : Target_QueryTarget(nullptr) {}
-  ~Target_QueryTarget() override;
+  inline BatchGetDocumentsResponse() : BatchGetDocumentsResponse(nullptr) {}
+  ~BatchGetDocumentsResponse() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR Target_QueryTarget(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR BatchGetDocumentsResponse(::google::protobuf::internal::ConstantInitialized);
 
-  inline Target_QueryTarget(const Target_QueryTarget& from)
-      : Target_QueryTarget(nullptr, from) {}
-  Target_QueryTarget(Target_QueryTarget&& from) noexcept
-    : Target_QueryTarget() {
+  inline BatchGetDocumentsResponse(const BatchGetDocumentsResponse& from)
+      : BatchGetDocumentsResponse(nullptr, from) {}
+  BatchGetDocumentsResponse(BatchGetDocumentsResponse&& from) noexcept
+    : BatchGetDocumentsResponse() {
     *this = ::std::move(from);
   }
 
-  inline Target_QueryTarget& operator=(const Target_QueryTarget& from) {
+  inline BatchGetDocumentsResponse& operator=(const BatchGetDocumentsResponse& from) {
     CopyFrom(from);
     return *this;
   }
-  inline Target_QueryTarget& operator=(Target_QueryTarget&& from) noexcept {
+  inline BatchGetDocumentsResponse& operator=(BatchGetDocumentsResponse&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -4990,25 +5018,26 @@ class Target_QueryTarget final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const Target_QueryTarget& default_instance() {
+  static const BatchGetDocumentsResponse& default_instance() {
     return *internal_default_instance();
   }
-  enum QueryTypeCase {
-    kStructuredQuery = 2,
-    QUERY_TYPE_NOT_SET = 0,
+  enum ResultCase {
+    kFound = 1,
+    kMissing = 2,
+    RESULT_NOT_SET = 0,
   };
 
-  static inline const Target_QueryTarget* internal_default_instance() {
-    return reinterpret_cast<const Target_QueryTarget*>(
-               &_Target_QueryTarget_default_instance_);
+  static inline const BatchGetDocumentsResponse* internal_default_instance() {
+    return reinterpret_cast<const BatchGetDocumentsResponse*>(
+               &_BatchGetDocumentsResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    24;
+    7;
 
-  friend void swap(Target_QueryTarget& a, Target_QueryTarget& b) {
+  friend void swap(BatchGetDocumentsResponse& a, BatchGetDocumentsResponse& b) {
     a.Swap(&b);
   }
-  inline void Swap(Target_QueryTarget* other) {
+  inline void Swap(BatchGetDocumentsResponse* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -5021,7 +5050,7 @@ class Target_QueryTarget final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(Target_QueryTarget* other) {
+  void UnsafeArenaSwap(BatchGetDocumentsResponse* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -5029,14 +5058,14 @@ class Target_QueryTarget final :
 
   // implements Message ----------------------------------------------
 
-  Target_QueryTarget* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<Target_QueryTarget>(arena);
+  BatchGetDocumentsResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<BatchGetDocumentsResponse>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const Target_QueryTarget& from);
+  void CopyFrom(const BatchGetDocumentsResponse& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const Target_QueryTarget& from) {
-    Target_QueryTarget::MergeImpl(*this, from);
+  void MergeFrom( const BatchGetDocumentsResponse& from) {
+    BatchGetDocumentsResponse::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -5054,16 +5083,16 @@ class Target_QueryTarget final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(Target_QueryTarget* other);
+  void InternalSwap(BatchGetDocumentsResponse* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.Target.QueryTarget";
+    return "google.firestore.v1.BatchGetDocumentsResponse";
   }
   protected:
-  explicit Target_QueryTarget(::google::protobuf::Arena* arena);
-  Target_QueryTarget(::google::protobuf::Arena* arena, const Target_QueryTarget& from);
+  explicit BatchGetDocumentsResponse(::google::protobuf::Arena* arena);
+  BatchGetDocumentsResponse(::google::protobuf::Arena* arena, const BatchGetDocumentsResponse& from);
   public:
 
   static const ClassData _class_data_;
@@ -5076,58 +5105,93 @@ class Target_QueryTarget final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kParentFieldNumber = 1,
-    kStructuredQueryFieldNumber = 2,
+    kTransactionFieldNumber = 3,
+    kReadTimeFieldNumber = 4,
+    kFoundFieldNumber = 1,
+    kMissingFieldNumber = 2,
   };
-  // string parent = 1;
-  void clear_parent() ;
-  const std::string& parent() const;
+  // bytes transaction = 3;
+  void clear_transaction() ;
+  const std::string& transaction() const;
   template <typename Arg_ = const std::string&, typename... Args_>
-  void set_parent(Arg_&& arg, Args_... args);
-  std::string* mutable_parent();
-  PROTOBUF_NODISCARD std::string* release_parent();
-  void set_allocated_parent(std::string* value);
+  void set_transaction(Arg_&& arg, Args_... args);
+  std::string* mutable_transaction();
+  PROTOBUF_NODISCARD std::string* release_transaction();
+  void set_allocated_transaction(std::string* value);
 
   private:
-  const std::string& _internal_parent() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
+  const std::string& _internal_transaction() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_transaction(
       const std::string& value);
-  std::string* _internal_mutable_parent();
+  std::string* _internal_mutable_transaction();
 
   public:
-  // .google.firestore.v1.StructuredQuery structured_query = 2;
-  bool has_structured_query() const;
+  // .google.protobuf.Timestamp read_time = 4;
+  bool has_read_time() const;
+  void clear_read_time() ;
+  const ::google::protobuf::Timestamp& read_time() const;
+  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
+  ::google::protobuf::Timestamp* mutable_read_time();
+  void set_allocated_read_time(::google::protobuf::Timestamp* value);
+  void unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value);
+  ::google::protobuf::Timestamp* unsafe_arena_release_read_time();
+
   private:
-  bool _internal_has_structured_query() const;
+  const ::google::protobuf::Timestamp& _internal_read_time() const;
+  ::google::protobuf::Timestamp* _internal_mutable_read_time();
 
   public:
-  void clear_structured_query() ;
-  const ::google::firestore::v1::StructuredQuery& structured_query() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::StructuredQuery* release_structured_query();
-  ::google::firestore::v1::StructuredQuery* mutable_structured_query();
-  void set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
-  void unsafe_arena_set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
-  ::google::firestore::v1::StructuredQuery* unsafe_arena_release_structured_query();
+  // .google.firestore.v1.Document found = 1;
+  bool has_found() const;
+  private:
+  bool _internal_has_found() const;
+
+  public:
+  void clear_found() ;
+  const ::google::firestore::v1::Document& found() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Document* release_found();
+  ::google::firestore::v1::Document* mutable_found();
+  void set_allocated_found(::google::firestore::v1::Document* value);
+  void unsafe_arena_set_allocated_found(::google::firestore::v1::Document* value);
+  ::google::firestore::v1::Document* unsafe_arena_release_found();
 
   private:
-  const ::google::firestore::v1::StructuredQuery& _internal_structured_query() const;
-  ::google::firestore::v1::StructuredQuery* _internal_mutable_structured_query();
+  const ::google::firestore::v1::Document& _internal_found() const;
+  ::google::firestore::v1::Document* _internal_mutable_found();
 
   public:
-  void clear_query_type();
-  QueryTypeCase query_type_case() const;
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.Target.QueryTarget)
+  // string missing = 2;
+  bool has_missing() const;
+  void clear_missing() ;
+  const std::string& missing() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_missing(Arg_&& arg, Args_... args);
+  std::string* mutable_missing();
+  PROTOBUF_NODISCARD std::string* release_missing();
+  void set_allocated_missing(std::string* value);
+
+  private:
+  const std::string& _internal_missing() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_missing(
+      const std::string& value);
+  std::string* _internal_mutable_missing();
+
+  public:
+  void clear_result();
+  ResultCase result_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.BatchGetDocumentsResponse)
  private:
   class _Internal;
-  void set_has_structured_query();
+  void set_has_found();
+  void set_has_missing();
 
-  inline bool has_query_type() const;
-  inline void clear_has_query_type();
+  inline bool has_result() const;
+  inline void clear_has_result();
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      0, 2, 1,
-      53, 2>
+      1, 4, 2,
+      61, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
@@ -5143,13 +5207,16 @@ class Target_QueryTarget final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    ::google::protobuf::internal::ArenaStringPtr parent_;
-    union QueryTypeUnion {
-      constexpr QueryTypeUnion() : _constinit_{} {}
-        ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::firestore::v1::StructuredQuery* structured_query_;
-    } query_type_;
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::internal::ArenaStringPtr transaction_;
+    ::google::protobuf::Timestamp* read_time_;
+    union ResultUnion {
+      constexpr ResultUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::firestore::v1::Document* found_;
+      ::google::protobuf::internal::ArenaStringPtr missing_;
+    } result_;
     ::uint32_t _oneof_case_[1];
 
     PROTOBUF_TSAN_DECLARE_MEMBER
@@ -5158,26 +5225,26 @@ class Target_QueryTarget final :
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class RunQueryRequest final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.RunQueryRequest) */ {
+class WriteRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.WriteRequest) */ {
  public:
-  inline RunQueryRequest() : RunQueryRequest(nullptr) {}
-  ~RunQueryRequest() override;
+  inline WriteRequest() : WriteRequest(nullptr) {}
+  ~WriteRequest() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR RunQueryRequest(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR WriteRequest(::google::protobuf::internal::ConstantInitialized);
 
-  inline RunQueryRequest(const RunQueryRequest& from)
-      : RunQueryRequest(nullptr, from) {}
-  RunQueryRequest(RunQueryRequest&& from) noexcept
-    : RunQueryRequest() {
+  inline WriteRequest(const WriteRequest& from)
+      : WriteRequest(nullptr, from) {}
+  WriteRequest(WriteRequest&& from) noexcept
+    : WriteRequest() {
     *this = ::std::move(from);
   }
 
-  inline RunQueryRequest& operator=(const RunQueryRequest& from) {
+  inline WriteRequest& operator=(const WriteRequest& from) {
     CopyFrom(from);
     return *this;
   }
-  inline RunQueryRequest& operator=(RunQueryRequest&& from) noexcept {
+  inline WriteRequest& operator=(WriteRequest&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -5209,32 +5276,20 @@ class RunQueryRequest final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const RunQueryRequest& default_instance() {
+  static const WriteRequest& default_instance() {
     return *internal_default_instance();
   }
-  enum QueryTypeCase {
-    kStructuredQuery = 2,
-    QUERY_TYPE_NOT_SET = 0,
-  };
-
-  enum ConsistencySelectorCase {
-    kTransaction = 5,
-    kNewTransaction = 6,
-    kReadTime = 7,
-    CONSISTENCY_SELECTOR_NOT_SET = 0,
-  };
-
-  static inline const RunQueryRequest* internal_default_instance() {
-    return reinterpret_cast<const RunQueryRequest*>(
-               &_RunQueryRequest_default_instance_);
+  static inline const WriteRequest* internal_default_instance() {
+    return reinterpret_cast<const WriteRequest*>(
+               &_WriteRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    13;
+    20;
 
-  friend void swap(RunQueryRequest& a, RunQueryRequest& b) {
+  friend void swap(WriteRequest& a, WriteRequest& b) {
     a.Swap(&b);
   }
-  inline void Swap(RunQueryRequest* other) {
+  inline void Swap(WriteRequest* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -5247,7 +5302,7 @@ class RunQueryRequest final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(RunQueryRequest* other) {
+  void UnsafeArenaSwap(WriteRequest* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -5255,14 +5310,14 @@ class RunQueryRequest final :
 
   // implements Message ----------------------------------------------
 
-  RunQueryRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<RunQueryRequest>(arena);
+  WriteRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<WriteRequest>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const RunQueryRequest& from);
+  void CopyFrom(const WriteRequest& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const RunQueryRequest& from) {
-    RunQueryRequest::MergeImpl(*this, from);
+  void MergeFrom( const WriteRequest& from) {
+    WriteRequest::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -5280,16 +5335,16 @@ class RunQueryRequest final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(RunQueryRequest* other);
+  void InternalSwap(WriteRequest* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.RunQueryRequest";
+    return "google.firestore.v1.WriteRequest";
   }
   protected:
-  explicit RunQueryRequest(::google::protobuf::Arena* arena);
-  RunQueryRequest(::google::protobuf::Arena* arena, const RunQueryRequest& from);
+  explicit WriteRequest(::google::protobuf::Arena* arena);
+  WriteRequest(::google::protobuf::Arena* arena, const WriteRequest& from);
   public:
 
   static const ClassData _class_data_;
@@ -5299,127 +5354,105 @@ class RunQueryRequest final :
 
   // nested types ----------------------------------------------------
 
+
   // accessors -------------------------------------------------------
 
   enum : int {
-    kParentFieldNumber = 1,
-    kStructuredQueryFieldNumber = 2,
-    kTransactionFieldNumber = 5,
-    kNewTransactionFieldNumber = 6,
-    kReadTimeFieldNumber = 7,
+    kWritesFieldNumber = 3,
+    kLabelsFieldNumber = 5,
+    kDatabaseFieldNumber = 1,
+    kStreamIdFieldNumber = 2,
+    kStreamTokenFieldNumber = 4,
   };
-  // string parent = 1;
-  void clear_parent() ;
-  const std::string& parent() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_parent(Arg_&& arg, Args_... args);
-  std::string* mutable_parent();
-  PROTOBUF_NODISCARD std::string* release_parent();
-  void set_allocated_parent(std::string* value);
-
+  // repeated .google.firestore.v1.Write writes = 3;
+  int writes_size() const;
   private:
-  const std::string& _internal_parent() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
-      const std::string& value);
-  std::string* _internal_mutable_parent();
+  int _internal_writes_size() const;
 
   public:
-  // .google.firestore.v1.StructuredQuery structured_query = 2;
-  bool has_structured_query() const;
+  void clear_writes() ;
+  ::google::firestore::v1::Write* mutable_writes(int index);
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >*
+      mutable_writes();
   private:
-  bool _internal_has_structured_query() const;
+  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>& _internal_writes() const;
+  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>* _internal_mutable_writes();
+  public:
+  const ::google::firestore::v1::Write& writes(int index) const;
+  ::google::firestore::v1::Write* add_writes();
+  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >&
+      writes() const;
+  // map<string, string> labels = 5;
+  int labels_size() const;
+  private:
+  int _internal_labels_size() const;
 
   public:
-  void clear_structured_query() ;
-  const ::google::firestore::v1::StructuredQuery& structured_query() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::StructuredQuery* release_structured_query();
-  ::google::firestore::v1::StructuredQuery* mutable_structured_query();
-  void set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
-  void unsafe_arena_set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
-  ::google::firestore::v1::StructuredQuery* unsafe_arena_release_structured_query();
+  void clear_labels() ;
+  const ::google::protobuf::Map<std::string, std::string>& labels() const;
+  ::google::protobuf::Map<std::string, std::string>* mutable_labels();
 
   private:
-  const ::google::firestore::v1::StructuredQuery& _internal_structured_query() const;
-  ::google::firestore::v1::StructuredQuery* _internal_mutable_structured_query();
+  const ::google::protobuf::Map<std::string, std::string>& _internal_labels() const;
+  ::google::protobuf::Map<std::string, std::string>* _internal_mutable_labels();
 
   public:
-  // bytes transaction = 5;
-  bool has_transaction() const;
-  void clear_transaction() ;
-  const std::string& transaction() const;
+  // string database = 1;
+  void clear_database() ;
+  const std::string& database() const;
   template <typename Arg_ = const std::string&, typename... Args_>
-  void set_transaction(Arg_&& arg, Args_... args);
-  std::string* mutable_transaction();
-  PROTOBUF_NODISCARD std::string* release_transaction();
-  void set_allocated_transaction(std::string* value);
+  void set_database(Arg_&& arg, Args_... args);
+  std::string* mutable_database();
+  PROTOBUF_NODISCARD std::string* release_database();
+  void set_allocated_database(std::string* value);
 
   private:
-  const std::string& _internal_transaction() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_transaction(
+  const std::string& _internal_database() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_database(
       const std::string& value);
-  std::string* _internal_mutable_transaction();
-
-  public:
-  // .google.firestore.v1.TransactionOptions new_transaction = 6;
-  bool has_new_transaction() const;
-  private:
-  bool _internal_has_new_transaction() const;
+  std::string* _internal_mutable_database();
 
   public:
-  void clear_new_transaction() ;
-  const ::google::firestore::v1::TransactionOptions& new_transaction() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::TransactionOptions* release_new_transaction();
-  ::google::firestore::v1::TransactionOptions* mutable_new_transaction();
-  void set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
-  void unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
-  ::google::firestore::v1::TransactionOptions* unsafe_arena_release_new_transaction();
-
-  private:
-  const ::google::firestore::v1::TransactionOptions& _internal_new_transaction() const;
-  ::google::firestore::v1::TransactionOptions* _internal_mutable_new_transaction();
+  // string stream_id = 2;
+  void clear_stream_id() ;
+  const std::string& stream_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_stream_id(Arg_&& arg, Args_... args);
+  std::string* mutable_stream_id();
+  PROTOBUF_NODISCARD std::string* release_stream_id();
+  void set_allocated_stream_id(std::string* value);
 
-  public:
-  // .google.protobuf.Timestamp read_time = 7;
-  bool has_read_time() const;
   private:
-  bool _internal_has_read_time() const;
+  const std::string& _internal_stream_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_stream_id(
+      const std::string& value);
+  std::string* _internal_mutable_stream_id();
 
   public:
-  void clear_read_time() ;
-  const ::google::protobuf::Timestamp& read_time() const;
-  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
-  ::google::protobuf::Timestamp* mutable_read_time();
-  void set_allocated_read_time(::google::protobuf::Timestamp* value);
-  void unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value);
-  ::google::protobuf::Timestamp* unsafe_arena_release_read_time();
+  // bytes stream_token = 4;
+  void clear_stream_token() ;
+  const std::string& stream_token() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_stream_token(Arg_&& arg, Args_... args);
+  std::string* mutable_stream_token();
+  PROTOBUF_NODISCARD std::string* release_stream_token();
+  void set_allocated_stream_token(std::string* value);
 
   private:
-  const ::google::protobuf::Timestamp& _internal_read_time() const;
-  ::google::protobuf::Timestamp* _internal_mutable_read_time();
+  const std::string& _internal_stream_token() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_stream_token(
+      const std::string& value);
+  std::string* _internal_mutable_stream_token();
 
   public:
-  void clear_query_type();
-  QueryTypeCase query_type_case() const;
-  void clear_consistency_selector();
-  ConsistencySelectorCase consistency_selector_case() const;
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.RunQueryRequest)
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.WriteRequest)
  private:
   class _Internal;
-  void set_has_structured_query();
-  void set_has_transaction();
-  void set_has_new_transaction();
-  void set_has_read_time();
-
-  inline bool has_query_type() const;
-  inline void clear_has_query_type();
-
-  inline bool has_consistency_selector() const;
-  inline void clear_has_consistency_selector();
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      0, 5, 3,
-      50, 2>
+      2, 5, 2,
+      64, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
@@ -5435,48 +5468,41 @@ class RunQueryRequest final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    ::google::protobuf::internal::ArenaStringPtr parent_;
-    union QueryTypeUnion {
-      constexpr QueryTypeUnion() : _constinit_{} {}
-        ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::firestore::v1::StructuredQuery* structured_query_;
-    } query_type_;
-    union ConsistencySelectorUnion {
-      constexpr ConsistencySelectorUnion() : _constinit_{} {}
-        ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::protobuf::internal::ArenaStringPtr transaction_;
-      ::google::firestore::v1::TransactionOptions* new_transaction_;
-      ::google::protobuf::Timestamp* read_time_;
-    } consistency_selector_;
+    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write > writes_;
+    ::google::protobuf::internal::MapField<WriteRequest_LabelsEntry_DoNotUse, std::string, std::string,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_STRING>
+        labels_;
+    ::google::protobuf::internal::ArenaStringPtr database_;
+    ::google::protobuf::internal::ArenaStringPtr stream_id_;
+    ::google::protobuf::internal::ArenaStringPtr stream_token_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
-    ::uint32_t _oneof_case_[2];
-
     PROTOBUF_TSAN_DECLARE_MEMBER
   };
   union { Impl_ _impl_; };
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class ListenResponse final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.ListenResponse) */ {
+class Target_QueryTarget final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Target.QueryTarget) */ {
  public:
-  inline ListenResponse() : ListenResponse(nullptr) {}
-  ~ListenResponse() override;
+  inline Target_QueryTarget() : Target_QueryTarget(nullptr) {}
+  ~Target_QueryTarget() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR ListenResponse(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR Target_QueryTarget(::google::protobuf::internal::ConstantInitialized);
 
-  inline ListenResponse(const ListenResponse& from)
-      : ListenResponse(nullptr, from) {}
-  ListenResponse(ListenResponse&& from) noexcept
-    : ListenResponse() {
+  inline Target_QueryTarget(const Target_QueryTarget& from)
+      : Target_QueryTarget(nullptr, from) {}
+  Target_QueryTarget(Target_QueryTarget&& from) noexcept
+    : Target_QueryTarget() {
     *this = ::std::move(from);
   }
 
-  inline ListenResponse& operator=(const ListenResponse& from) {
+  inline Target_QueryTarget& operator=(const Target_QueryTarget& from) {
     CopyFrom(from);
     return *this;
   }
-  inline ListenResponse& operator=(ListenResponse&& from) noexcept {
+  inline Target_QueryTarget& operator=(Target_QueryTarget&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -5508,29 +5534,25 @@ class ListenResponse final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const ListenResponse& default_instance() {
+  static const Target_QueryTarget& default_instance() {
     return *internal_default_instance();
   }
-  enum ResponseTypeCase {
-    kTargetChange = 2,
-    kDocumentChange = 3,
-    kDocumentDelete = 4,
-    kDocumentRemove = 6,
-    kFilter = 5,
-    RESPONSE_TYPE_NOT_SET = 0,
+  enum QueryTypeCase {
+    kStructuredQuery = 2,
+    QUERY_TYPE_NOT_SET = 0,
   };
 
-  static inline const ListenResponse* internal_default_instance() {
-    return reinterpret_cast<const ListenResponse*>(
-               &_ListenResponse_default_instance_);
+  static inline const Target_QueryTarget* internal_default_instance() {
+    return reinterpret_cast<const Target_QueryTarget*>(
+               &_Target_QueryTarget_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    22;
+    26;
 
-  friend void swap(ListenResponse& a, ListenResponse& b) {
+  friend void swap(Target_QueryTarget& a, Target_QueryTarget& b) {
     a.Swap(&b);
   }
-  inline void Swap(ListenResponse* other) {
+  inline void Swap(Target_QueryTarget* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -5543,7 +5565,7 @@ class ListenResponse final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(ListenResponse* other) {
+  void UnsafeArenaSwap(Target_QueryTarget* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -5551,14 +5573,14 @@ class ListenResponse final :
 
   // implements Message ----------------------------------------------
 
-  ListenResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<ListenResponse>(arena);
+  Target_QueryTarget* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Target_QueryTarget>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const ListenResponse& from);
+  void CopyFrom(const Target_QueryTarget& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const ListenResponse& from) {
-    ListenResponse::MergeImpl(*this, from);
+  void MergeFrom( const Target_QueryTarget& from) {
+    Target_QueryTarget::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -5576,16 +5598,16 @@ class ListenResponse final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(ListenResponse* other);
+  void InternalSwap(Target_QueryTarget* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.ListenResponse";
+    return "google.firestore.v1.Target.QueryTarget";
   }
   protected:
-  explicit ListenResponse(::google::protobuf::Arena* arena);
-  ListenResponse(::google::protobuf::Arena* arena, const ListenResponse& from);
+  explicit Target_QueryTarget(::google::protobuf::Arena* arena);
+  Target_QueryTarget(::google::protobuf::Arena* arena, const Target_QueryTarget& from);
   public:
 
   static const ClassData _class_data_;
@@ -5598,125 +5620,58 @@ class ListenResponse final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kTargetChangeFieldNumber = 2,
-    kDocumentChangeFieldNumber = 3,
-    kDocumentDeleteFieldNumber = 4,
-    kDocumentRemoveFieldNumber = 6,
-    kFilterFieldNumber = 5,
+    kParentFieldNumber = 1,
+    kStructuredQueryFieldNumber = 2,
   };
-  // .google.firestore.v1.TargetChange target_change = 2;
-  bool has_target_change() const;
+  // string parent = 1;
+  void clear_parent() ;
+  const std::string& parent() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_parent(Arg_&& arg, Args_... args);
+  std::string* mutable_parent();
+  PROTOBUF_NODISCARD std::string* release_parent();
+  void set_allocated_parent(std::string* value);
+
   private:
-  bool _internal_has_target_change() const;
+  const std::string& _internal_parent() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
+      const std::string& value);
+  std::string* _internal_mutable_parent();
 
   public:
-  void clear_target_change() ;
-  const ::google::firestore::v1::TargetChange& target_change() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::TargetChange* release_target_change();
-  ::google::firestore::v1::TargetChange* mutable_target_change();
-  void set_allocated_target_change(::google::firestore::v1::TargetChange* value);
-  void unsafe_arena_set_allocated_target_change(::google::firestore::v1::TargetChange* value);
-  ::google::firestore::v1::TargetChange* unsafe_arena_release_target_change();
-
+  // .google.firestore.v1.StructuredQuery structured_query = 2;
+  bool has_structured_query() const;
   private:
-  const ::google::firestore::v1::TargetChange& _internal_target_change() const;
-  ::google::firestore::v1::TargetChange* _internal_mutable_target_change();
+  bool _internal_has_structured_query() const;
 
   public:
-  // .google.firestore.v1.DocumentChange document_change = 3;
-  bool has_document_change() const;
-  private:
-  bool _internal_has_document_change() const;
-
-  public:
-  void clear_document_change() ;
-  const ::google::firestore::v1::DocumentChange& document_change() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentChange* release_document_change();
-  ::google::firestore::v1::DocumentChange* mutable_document_change();
-  void set_allocated_document_change(::google::firestore::v1::DocumentChange* value);
-  void unsafe_arena_set_allocated_document_change(::google::firestore::v1::DocumentChange* value);
-  ::google::firestore::v1::DocumentChange* unsafe_arena_release_document_change();
-
-  private:
-  const ::google::firestore::v1::DocumentChange& _internal_document_change() const;
-  ::google::firestore::v1::DocumentChange* _internal_mutable_document_change();
-
-  public:
-  // .google.firestore.v1.DocumentDelete document_delete = 4;
-  bool has_document_delete() const;
-  private:
-  bool _internal_has_document_delete() const;
-
-  public:
-  void clear_document_delete() ;
-  const ::google::firestore::v1::DocumentDelete& document_delete() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentDelete* release_document_delete();
-  ::google::firestore::v1::DocumentDelete* mutable_document_delete();
-  void set_allocated_document_delete(::google::firestore::v1::DocumentDelete* value);
-  void unsafe_arena_set_allocated_document_delete(::google::firestore::v1::DocumentDelete* value);
-  ::google::firestore::v1::DocumentDelete* unsafe_arena_release_document_delete();
-
-  private:
-  const ::google::firestore::v1::DocumentDelete& _internal_document_delete() const;
-  ::google::firestore::v1::DocumentDelete* _internal_mutable_document_delete();
-
-  public:
-  // .google.firestore.v1.DocumentRemove document_remove = 6;
-  bool has_document_remove() const;
-  private:
-  bool _internal_has_document_remove() const;
-
-  public:
-  void clear_document_remove() ;
-  const ::google::firestore::v1::DocumentRemove& document_remove() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentRemove* release_document_remove();
-  ::google::firestore::v1::DocumentRemove* mutable_document_remove();
-  void set_allocated_document_remove(::google::firestore::v1::DocumentRemove* value);
-  void unsafe_arena_set_allocated_document_remove(::google::firestore::v1::DocumentRemove* value);
-  ::google::firestore::v1::DocumentRemove* unsafe_arena_release_document_remove();
-
-  private:
-  const ::google::firestore::v1::DocumentRemove& _internal_document_remove() const;
-  ::google::firestore::v1::DocumentRemove* _internal_mutable_document_remove();
-
-  public:
-  // .google.firestore.v1.ExistenceFilter filter = 5;
-  bool has_filter() const;
-  private:
-  bool _internal_has_filter() const;
-
-  public:
-  void clear_filter() ;
-  const ::google::firestore::v1::ExistenceFilter& filter() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::ExistenceFilter* release_filter();
-  ::google::firestore::v1::ExistenceFilter* mutable_filter();
-  void set_allocated_filter(::google::firestore::v1::ExistenceFilter* value);
-  void unsafe_arena_set_allocated_filter(::google::firestore::v1::ExistenceFilter* value);
-  ::google::firestore::v1::ExistenceFilter* unsafe_arena_release_filter();
+  void clear_structured_query() ;
+  const ::google::firestore::v1::StructuredQuery& structured_query() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::StructuredQuery* release_structured_query();
+  ::google::firestore::v1::StructuredQuery* mutable_structured_query();
+  void set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
+  void unsafe_arena_set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
+  ::google::firestore::v1::StructuredQuery* unsafe_arena_release_structured_query();
 
   private:
-  const ::google::firestore::v1::ExistenceFilter& _internal_filter() const;
-  ::google::firestore::v1::ExistenceFilter* _internal_mutable_filter();
+  const ::google::firestore::v1::StructuredQuery& _internal_structured_query() const;
+  ::google::firestore::v1::StructuredQuery* _internal_mutable_structured_query();
 
   public:
-  void clear_response_type();
-  ResponseTypeCase response_type_case() const;
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.ListenResponse)
+  void clear_query_type();
+  QueryTypeCase query_type_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.Target.QueryTarget)
  private:
   class _Internal;
-  void set_has_target_change();
-  void set_has_document_change();
-  void set_has_document_delete();
-  void set_has_document_remove();
-  void set_has_filter();
+  void set_has_structured_query();
 
-  inline bool has_response_type() const;
-  inline void clear_has_response_type();
+  inline bool has_query_type() const;
+  inline void clear_has_query_type();
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      0, 5, 5,
-      0, 2>
+      0, 2, 1,
+      53, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
@@ -5732,15 +5687,12 @@ class ListenResponse final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    union ResponseTypeUnion {
-      constexpr ResponseTypeUnion() : _constinit_{} {}
+    ::google::protobuf::internal::ArenaStringPtr parent_;
+    union QueryTypeUnion {
+      constexpr QueryTypeUnion() : _constinit_{} {}
         ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::firestore::v1::TargetChange* target_change_;
-      ::google::firestore::v1::DocumentChange* document_change_;
-      ::google::firestore::v1::DocumentDelete* document_delete_;
-      ::google::firestore::v1::DocumentRemove* document_remove_;
-      ::google::firestore::v1::ExistenceFilter* filter_;
-    } response_type_;
+      ::google::firestore::v1::StructuredQuery* structured_query_;
+    } query_type_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
     ::uint32_t _oneof_case_[1];
 
@@ -5750,26 +5702,26 @@ class ListenResponse final :
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class CommitRequest final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.CommitRequest) */ {
+class RunQueryRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.RunQueryRequest) */ {
  public:
-  inline CommitRequest() : CommitRequest(nullptr) {}
-  ~CommitRequest() override;
+  inline RunQueryRequest() : RunQueryRequest(nullptr) {}
+  ~RunQueryRequest() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR CommitRequest(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR RunQueryRequest(::google::protobuf::internal::ConstantInitialized);
 
-  inline CommitRequest(const CommitRequest& from)
-      : CommitRequest(nullptr, from) {}
-  CommitRequest(CommitRequest&& from) noexcept
-    : CommitRequest() {
+  inline RunQueryRequest(const RunQueryRequest& from)
+      : RunQueryRequest(nullptr, from) {}
+  RunQueryRequest(RunQueryRequest&& from) noexcept
+    : RunQueryRequest() {
     *this = ::std::move(from);
   }
 
-  inline CommitRequest& operator=(const CommitRequest& from) {
+  inline RunQueryRequest& operator=(const RunQueryRequest& from) {
     CopyFrom(from);
     return *this;
   }
-  inline CommitRequest& operator=(CommitRequest&& from) noexcept {
+  inline RunQueryRequest& operator=(RunQueryRequest&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -5801,20 +5753,32 @@ class CommitRequest final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const CommitRequest& default_instance() {
+  static const RunQueryRequest& default_instance() {
     return *internal_default_instance();
   }
-  static inline const CommitRequest* internal_default_instance() {
-    return reinterpret_cast<const CommitRequest*>(
-               &_CommitRequest_default_instance_);
+  enum QueryTypeCase {
+    kStructuredQuery = 2,
+    QUERY_TYPE_NOT_SET = 0,
+  };
+
+  enum ConsistencySelectorCase {
+    kTransaction = 5,
+    kNewTransaction = 6,
+    kReadTime = 7,
+    CONSISTENCY_SELECTOR_NOT_SET = 0,
+  };
+
+  static inline const RunQueryRequest* internal_default_instance() {
+    return reinterpret_cast<const RunQueryRequest*>(
+               &_RunQueryRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    10;
+    13;
 
-  friend void swap(CommitRequest& a, CommitRequest& b) {
+  friend void swap(RunQueryRequest& a, RunQueryRequest& b) {
     a.Swap(&b);
   }
-  inline void Swap(CommitRequest* other) {
+  inline void Swap(RunQueryRequest* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -5827,7 +5791,7 @@ class CommitRequest final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(CommitRequest* other) {
+  void UnsafeArenaSwap(RunQueryRequest* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -5835,14 +5799,14 @@ class CommitRequest final :
 
   // implements Message ----------------------------------------------
 
-  CommitRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<CommitRequest>(arena);
+  RunQueryRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<RunQueryRequest>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const CommitRequest& from);
+  void CopyFrom(const RunQueryRequest& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const CommitRequest& from) {
-    CommitRequest::MergeImpl(*this, from);
+  void MergeFrom( const RunQueryRequest& from) {
+    RunQueryRequest::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -5860,16 +5824,16 @@ class CommitRequest final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(CommitRequest* other);
+  void InternalSwap(RunQueryRequest* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.CommitRequest";
+    return "google.firestore.v1.RunQueryRequest";
   }
   protected:
-  explicit CommitRequest(::google::protobuf::Arena* arena);
-  CommitRequest(::google::protobuf::Arena* arena, const CommitRequest& from);
+  explicit RunQueryRequest(::google::protobuf::Arena* arena);
+  RunQueryRequest(::google::protobuf::Arena* arena, const RunQueryRequest& from);
   public:
 
   static const ClassData _class_data_;
@@ -5882,45 +5846,49 @@ class CommitRequest final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kWritesFieldNumber = 2,
-    kDatabaseFieldNumber = 1,
-    kTransactionFieldNumber = 3,
+    kParentFieldNumber = 1,
+    kStructuredQueryFieldNumber = 2,
+    kTransactionFieldNumber = 5,
+    kNewTransactionFieldNumber = 6,
+    kReadTimeFieldNumber = 7,
   };
-  // repeated .google.firestore.v1.Write writes = 2;
-  int writes_size() const;
+  // string parent = 1;
+  void clear_parent() ;
+  const std::string& parent() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_parent(Arg_&& arg, Args_... args);
+  std::string* mutable_parent();
+  PROTOBUF_NODISCARD std::string* release_parent();
+  void set_allocated_parent(std::string* value);
+
   private:
-  int _internal_writes_size() const;
+  const std::string& _internal_parent() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
+      const std::string& value);
+  std::string* _internal_mutable_parent();
 
   public:
-  void clear_writes() ;
-  ::google::firestore::v1::Write* mutable_writes(int index);
-  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >*
-      mutable_writes();
+  // .google.firestore.v1.StructuredQuery structured_query = 2;
+  bool has_structured_query() const;
   private:
-  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>& _internal_writes() const;
-  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>* _internal_mutable_writes();
+  bool _internal_has_structured_query() const;
+
   public:
-  const ::google::firestore::v1::Write& writes(int index) const;
-  ::google::firestore::v1::Write* add_writes();
-  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >&
-      writes() const;
-  // string database = 1;
-  void clear_database() ;
-  const std::string& database() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_database(Arg_&& arg, Args_... args);
-  std::string* mutable_database();
-  PROTOBUF_NODISCARD std::string* release_database();
-  void set_allocated_database(std::string* value);
+  void clear_structured_query() ;
+  const ::google::firestore::v1::StructuredQuery& structured_query() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::StructuredQuery* release_structured_query();
+  ::google::firestore::v1::StructuredQuery* mutable_structured_query();
+  void set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
+  void unsafe_arena_set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value);
+  ::google::firestore::v1::StructuredQuery* unsafe_arena_release_structured_query();
 
   private:
-  const std::string& _internal_database() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_database(
-      const std::string& value);
-  std::string* _internal_mutable_database();
+  const ::google::firestore::v1::StructuredQuery& _internal_structured_query() const;
+  ::google::firestore::v1::StructuredQuery* _internal_mutable_structured_query();
 
   public:
-  // bytes transaction = 3;
+  // bytes transaction = 5;
+  bool has_transaction() const;
   void clear_transaction() ;
   const std::string& transaction() const;
   template <typename Arg_ = const std::string&, typename... Args_>
@@ -5936,16 +5904,68 @@ class CommitRequest final :
   std::string* _internal_mutable_transaction();
 
   public:
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.CommitRequest)
- private:
-  class _Internal;
+  // .google.firestore.v1.TransactionOptions new_transaction = 6;
+  bool has_new_transaction() const;
+  private:
+  bool _internal_has_new_transaction() const;
 
-  friend class ::google::protobuf::internal::TcParser;
-  static const ::google::protobuf::internal::TcParseTable<
-      2, 3, 1,
-      50, 2>
-      _table_;
-  friend class ::google::protobuf::MessageLite;
+  public:
+  void clear_new_transaction() ;
+  const ::google::firestore::v1::TransactionOptions& new_transaction() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::TransactionOptions* release_new_transaction();
+  ::google::firestore::v1::TransactionOptions* mutable_new_transaction();
+  void set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
+  void unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
+  ::google::firestore::v1::TransactionOptions* unsafe_arena_release_new_transaction();
+
+  private:
+  const ::google::firestore::v1::TransactionOptions& _internal_new_transaction() const;
+  ::google::firestore::v1::TransactionOptions* _internal_mutable_new_transaction();
+
+  public:
+  // .google.protobuf.Timestamp read_time = 7;
+  bool has_read_time() const;
+  private:
+  bool _internal_has_read_time() const;
+
+  public:
+  void clear_read_time() ;
+  const ::google::protobuf::Timestamp& read_time() const;
+  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
+  ::google::protobuf::Timestamp* mutable_read_time();
+  void set_allocated_read_time(::google::protobuf::Timestamp* value);
+  void unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value);
+  ::google::protobuf::Timestamp* unsafe_arena_release_read_time();
+
+  private:
+  const ::google::protobuf::Timestamp& _internal_read_time() const;
+  ::google::protobuf::Timestamp* _internal_mutable_read_time();
+
+  public:
+  void clear_query_type();
+  QueryTypeCase query_type_case() const;
+  void clear_consistency_selector();
+  ConsistencySelectorCase consistency_selector_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.RunQueryRequest)
+ private:
+  class _Internal;
+  void set_has_structured_query();
+  void set_has_transaction();
+  void set_has_new_transaction();
+  void set_has_read_time();
+
+  inline bool has_query_type() const;
+  inline void clear_has_query_type();
+
+  inline bool has_consistency_selector() const;
+  inline void clear_has_consistency_selector();
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      0, 5, 3,
+      50, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
   friend class ::google::protobuf::Arena;
   template <typename T>
   friend class ::google::protobuf::Arena::InternalHelper;
@@ -5959,36 +5979,48 @@ class CommitRequest final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write > writes_;
-    ::google::protobuf::internal::ArenaStringPtr database_;
-    ::google::protobuf::internal::ArenaStringPtr transaction_;
+    ::google::protobuf::internal::ArenaStringPtr parent_;
+    union QueryTypeUnion {
+      constexpr QueryTypeUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::firestore::v1::StructuredQuery* structured_query_;
+    } query_type_;
+    union ConsistencySelectorUnion {
+      constexpr ConsistencySelectorUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::protobuf::internal::ArenaStringPtr transaction_;
+      ::google::firestore::v1::TransactionOptions* new_transaction_;
+      ::google::protobuf::Timestamp* read_time_;
+    } consistency_selector_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::uint32_t _oneof_case_[2];
+
     PROTOBUF_TSAN_DECLARE_MEMBER
   };
   union { Impl_ _impl_; };
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class Target final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Target) */ {
+class ListenResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.ListenResponse) */ {
  public:
-  inline Target() : Target(nullptr) {}
-  ~Target() override;
+  inline ListenResponse() : ListenResponse(nullptr) {}
+  ~ListenResponse() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR Target(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR ListenResponse(::google::protobuf::internal::ConstantInitialized);
 
-  inline Target(const Target& from)
-      : Target(nullptr, from) {}
-  Target(Target&& from) noexcept
-    : Target() {
+  inline ListenResponse(const ListenResponse& from)
+      : ListenResponse(nullptr, from) {}
+  ListenResponse(ListenResponse&& from) noexcept
+    : ListenResponse() {
     *this = ::std::move(from);
   }
 
-  inline Target& operator=(const Target& from) {
+  inline ListenResponse& operator=(const ListenResponse& from) {
     CopyFrom(from);
     return *this;
   }
-  inline Target& operator=(Target&& from) noexcept {
+  inline ListenResponse& operator=(ListenResponse&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -6020,32 +6052,29 @@ class Target final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const Target& default_instance() {
+  static const ListenResponse& default_instance() {
     return *internal_default_instance();
   }
-  enum TargetTypeCase {
-    kQuery = 2,
-    kDocuments = 3,
-    TARGET_TYPE_NOT_SET = 0,
-  };
-
-  enum ResumeTypeCase {
-    kResumeToken = 4,
-    kReadTime = 11,
-    RESUME_TYPE_NOT_SET = 0,
+  enum ResponseTypeCase {
+    kTargetChange = 2,
+    kDocumentChange = 3,
+    kDocumentDelete = 4,
+    kDocumentRemove = 6,
+    kFilter = 5,
+    RESPONSE_TYPE_NOT_SET = 0,
   };
 
-  static inline const Target* internal_default_instance() {
-    return reinterpret_cast<const Target*>(
-               &_Target_default_instance_);
+  static inline const ListenResponse* internal_default_instance() {
+    return reinterpret_cast<const ListenResponse*>(
+               &_ListenResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    25;
+    24;
 
-  friend void swap(Target& a, Target& b) {
+  friend void swap(ListenResponse& a, ListenResponse& b) {
     a.Swap(&b);
   }
-  inline void Swap(Target* other) {
+  inline void Swap(ListenResponse* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -6058,7 +6087,7 @@ class Target final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(Target* other) {
+  void UnsafeArenaSwap(ListenResponse* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -6066,14 +6095,14 @@ class Target final :
 
   // implements Message ----------------------------------------------
 
-  Target* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<Target>(arena);
+  ListenResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListenResponse>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const Target& from);
+  void CopyFrom(const ListenResponse& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const Target& from) {
-    Target::MergeImpl(*this, from);
+  void MergeFrom( const ListenResponse& from) {
+    ListenResponse::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -6091,16 +6120,16 @@ class Target final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(Target* other);
+  void InternalSwap(ListenResponse* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.Target";
+    return "google.firestore.v1.ListenResponse";
   }
   protected:
-  explicit Target(::google::protobuf::Arena* arena);
-  Target(::google::protobuf::Arena* arena, const Target& from);
+  explicit ListenResponse(::google::protobuf::Arena* arena);
+  ListenResponse(::google::protobuf::Arena* arena, const ListenResponse& from);
   public:
 
   static const ClassData _class_data_;
@@ -6110,150 +6139,127 @@ class Target final :
 
   // nested types ----------------------------------------------------
 
-  using DocumentsTarget = Target_DocumentsTarget;
-  using QueryTarget = Target_QueryTarget;
-
   // accessors -------------------------------------------------------
 
   enum : int {
-    kExpectedCountFieldNumber = 12,
-    kTargetIdFieldNumber = 5,
-    kOnceFieldNumber = 6,
-    kQueryFieldNumber = 2,
-    kDocumentsFieldNumber = 3,
-    kResumeTokenFieldNumber = 4,
-    kReadTimeFieldNumber = 11,
+    kTargetChangeFieldNumber = 2,
+    kDocumentChangeFieldNumber = 3,
+    kDocumentDeleteFieldNumber = 4,
+    kDocumentRemoveFieldNumber = 6,
+    kFilterFieldNumber = 5,
   };
-  // .google.protobuf.Int32Value expected_count = 12;
-  bool has_expected_count() const;
-  void clear_expected_count() ;
-  const ::google::protobuf::Int32Value& expected_count() const;
-  PROTOBUF_NODISCARD ::google::protobuf::Int32Value* release_expected_count();
-  ::google::protobuf::Int32Value* mutable_expected_count();
-  void set_allocated_expected_count(::google::protobuf::Int32Value* value);
-  void unsafe_arena_set_allocated_expected_count(::google::protobuf::Int32Value* value);
-  ::google::protobuf::Int32Value* unsafe_arena_release_expected_count();
-
+  // .google.firestore.v1.TargetChange target_change = 2;
+  bool has_target_change() const;
   private:
-  const ::google::protobuf::Int32Value& _internal_expected_count() const;
-  ::google::protobuf::Int32Value* _internal_mutable_expected_count();
+  bool _internal_has_target_change() const;
 
   public:
-  // int32 target_id = 5;
-  void clear_target_id() ;
-  ::int32_t target_id() const;
-  void set_target_id(::int32_t value);
+  void clear_target_change() ;
+  const ::google::firestore::v1::TargetChange& target_change() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::TargetChange* release_target_change();
+  ::google::firestore::v1::TargetChange* mutable_target_change();
+  void set_allocated_target_change(::google::firestore::v1::TargetChange* value);
+  void unsafe_arena_set_allocated_target_change(::google::firestore::v1::TargetChange* value);
+  ::google::firestore::v1::TargetChange* unsafe_arena_release_target_change();
 
   private:
-  ::int32_t _internal_target_id() const;
-  void _internal_set_target_id(::int32_t value);
+  const ::google::firestore::v1::TargetChange& _internal_target_change() const;
+  ::google::firestore::v1::TargetChange* _internal_mutable_target_change();
 
   public:
-  // bool once = 6;
-  void clear_once() ;
-  bool once() const;
-  void set_once(bool value);
-
+  // .google.firestore.v1.DocumentChange document_change = 3;
+  bool has_document_change() const;
   private:
-  bool _internal_once() const;
-  void _internal_set_once(bool value);
+  bool _internal_has_document_change() const;
 
   public:
-  // .google.firestore.v1.Target.QueryTarget query = 2;
-  bool has_query() const;
+  void clear_document_change() ;
+  const ::google::firestore::v1::DocumentChange& document_change() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentChange* release_document_change();
+  ::google::firestore::v1::DocumentChange* mutable_document_change();
+  void set_allocated_document_change(::google::firestore::v1::DocumentChange* value);
+  void unsafe_arena_set_allocated_document_change(::google::firestore::v1::DocumentChange* value);
+  ::google::firestore::v1::DocumentChange* unsafe_arena_release_document_change();
+
   private:
-  bool _internal_has_query() const;
+  const ::google::firestore::v1::DocumentChange& _internal_document_change() const;
+  ::google::firestore::v1::DocumentChange* _internal_mutable_document_change();
 
   public:
-  void clear_query() ;
-  const ::google::firestore::v1::Target_QueryTarget& query() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::Target_QueryTarget* release_query();
-  ::google::firestore::v1::Target_QueryTarget* mutable_query();
-  void set_allocated_query(::google::firestore::v1::Target_QueryTarget* value);
-  void unsafe_arena_set_allocated_query(::google::firestore::v1::Target_QueryTarget* value);
-  ::google::firestore::v1::Target_QueryTarget* unsafe_arena_release_query();
-
+  // .google.firestore.v1.DocumentDelete document_delete = 4;
+  bool has_document_delete() const;
   private:
-  const ::google::firestore::v1::Target_QueryTarget& _internal_query() const;
-  ::google::firestore::v1::Target_QueryTarget* _internal_mutable_query();
+  bool _internal_has_document_delete() const;
 
   public:
-  // .google.firestore.v1.Target.DocumentsTarget documents = 3;
-  bool has_documents() const;
+  void clear_document_delete() ;
+  const ::google::firestore::v1::DocumentDelete& document_delete() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentDelete* release_document_delete();
+  ::google::firestore::v1::DocumentDelete* mutable_document_delete();
+  void set_allocated_document_delete(::google::firestore::v1::DocumentDelete* value);
+  void unsafe_arena_set_allocated_document_delete(::google::firestore::v1::DocumentDelete* value);
+  ::google::firestore::v1::DocumentDelete* unsafe_arena_release_document_delete();
+
   private:
-  bool _internal_has_documents() const;
+  const ::google::firestore::v1::DocumentDelete& _internal_document_delete() const;
+  ::google::firestore::v1::DocumentDelete* _internal_mutable_document_delete();
 
   public:
-  void clear_documents() ;
-  const ::google::firestore::v1::Target_DocumentsTarget& documents() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::Target_DocumentsTarget* release_documents();
-  ::google::firestore::v1::Target_DocumentsTarget* mutable_documents();
-  void set_allocated_documents(::google::firestore::v1::Target_DocumentsTarget* value);
-  void unsafe_arena_set_allocated_documents(::google::firestore::v1::Target_DocumentsTarget* value);
-  ::google::firestore::v1::Target_DocumentsTarget* unsafe_arena_release_documents();
-
+  // .google.firestore.v1.DocumentRemove document_remove = 6;
+  bool has_document_remove() const;
   private:
-  const ::google::firestore::v1::Target_DocumentsTarget& _internal_documents() const;
-  ::google::firestore::v1::Target_DocumentsTarget* _internal_mutable_documents();
+  bool _internal_has_document_remove() const;
 
   public:
-  // bytes resume_token = 4;
-  bool has_resume_token() const;
-  void clear_resume_token() ;
-  const std::string& resume_token() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_resume_token(Arg_&& arg, Args_... args);
-  std::string* mutable_resume_token();
-  PROTOBUF_NODISCARD std::string* release_resume_token();
-  void set_allocated_resume_token(std::string* value);
+  void clear_document_remove() ;
+  const ::google::firestore::v1::DocumentRemove& document_remove() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::DocumentRemove* release_document_remove();
+  ::google::firestore::v1::DocumentRemove* mutable_document_remove();
+  void set_allocated_document_remove(::google::firestore::v1::DocumentRemove* value);
+  void unsafe_arena_set_allocated_document_remove(::google::firestore::v1::DocumentRemove* value);
+  ::google::firestore::v1::DocumentRemove* unsafe_arena_release_document_remove();
 
   private:
-  const std::string& _internal_resume_token() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_resume_token(
-      const std::string& value);
-  std::string* _internal_mutable_resume_token();
+  const ::google::firestore::v1::DocumentRemove& _internal_document_remove() const;
+  ::google::firestore::v1::DocumentRemove* _internal_mutable_document_remove();
 
   public:
-  // .google.protobuf.Timestamp read_time = 11;
-  bool has_read_time() const;
+  // .google.firestore.v1.ExistenceFilter filter = 5;
+  bool has_filter() const;
   private:
-  bool _internal_has_read_time() const;
+  bool _internal_has_filter() const;
 
   public:
-  void clear_read_time() ;
-  const ::google::protobuf::Timestamp& read_time() const;
-  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
-  ::google::protobuf::Timestamp* mutable_read_time();
-  void set_allocated_read_time(::google::protobuf::Timestamp* value);
-  void unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value);
-  ::google::protobuf::Timestamp* unsafe_arena_release_read_time();
+  void clear_filter() ;
+  const ::google::firestore::v1::ExistenceFilter& filter() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::ExistenceFilter* release_filter();
+  ::google::firestore::v1::ExistenceFilter* mutable_filter();
+  void set_allocated_filter(::google::firestore::v1::ExistenceFilter* value);
+  void unsafe_arena_set_allocated_filter(::google::firestore::v1::ExistenceFilter* value);
+  ::google::firestore::v1::ExistenceFilter* unsafe_arena_release_filter();
 
   private:
-  const ::google::protobuf::Timestamp& _internal_read_time() const;
-  ::google::protobuf::Timestamp* _internal_mutable_read_time();
+  const ::google::firestore::v1::ExistenceFilter& _internal_filter() const;
+  ::google::firestore::v1::ExistenceFilter* _internal_mutable_filter();
 
   public:
-  void clear_target_type();
-  TargetTypeCase target_type_case() const;
-  void clear_resume_type();
-  ResumeTypeCase resume_type_case() const;
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.Target)
+  void clear_response_type();
+  ResponseTypeCase response_type_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.ListenResponse)
  private:
   class _Internal;
-  void set_has_query();
-  void set_has_documents();
-  void set_has_resume_token();
-  void set_has_read_time();
-
-  inline bool has_target_type() const;
-  inline void clear_has_target_type();
+  void set_has_target_change();
+  void set_has_document_change();
+  void set_has_document_delete();
+  void set_has_document_remove();
+  void set_has_filter();
 
-  inline bool has_resume_type() const;
-  inline void clear_has_resume_type();
+  inline bool has_response_type() const;
+  inline void clear_has_response_type();
 
   friend class ::google::protobuf::internal::TcParser;
   static const ::google::protobuf::internal::TcParseTable<
-      2, 7, 4,
+      0, 5, 5,
       0, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
@@ -6270,24 +6276,17 @@ class Target final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    ::google::protobuf::internal::HasBits<1> _has_bits_;
-    mutable ::google::protobuf::internal::CachedSize _cached_size_;
-    ::google::protobuf::Int32Value* expected_count_;
-    ::int32_t target_id_;
-    bool once_;
-    union TargetTypeUnion {
-      constexpr TargetTypeUnion() : _constinit_{} {}
-        ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::firestore::v1::Target_QueryTarget* query_;
-      ::google::firestore::v1::Target_DocumentsTarget* documents_;
-    } target_type_;
-    union ResumeTypeUnion {
-      constexpr ResumeTypeUnion() : _constinit_{} {}
+    union ResponseTypeUnion {
+      constexpr ResponseTypeUnion() : _constinit_{} {}
         ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::protobuf::internal::ArenaStringPtr resume_token_;
-      ::google::protobuf::Timestamp* read_time_;
-    } resume_type_;
-    ::uint32_t _oneof_case_[2];
+      ::google::firestore::v1::TargetChange* target_change_;
+      ::google::firestore::v1::DocumentChange* document_change_;
+      ::google::firestore::v1::DocumentDelete* document_delete_;
+      ::google::firestore::v1::DocumentRemove* document_remove_;
+      ::google::firestore::v1::ExistenceFilter* filter_;
+    } response_type_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::uint32_t _oneof_case_[1];
 
     PROTOBUF_TSAN_DECLARE_MEMBER
   };
@@ -6295,26 +6294,26 @@ class Target final :
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class RunAggregationQueryRequest final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.RunAggregationQueryRequest) */ {
+class CommitRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.CommitRequest) */ {
  public:
-  inline RunAggregationQueryRequest() : RunAggregationQueryRequest(nullptr) {}
-  ~RunAggregationQueryRequest() override;
+  inline CommitRequest() : CommitRequest(nullptr) {}
+  ~CommitRequest() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR RunAggregationQueryRequest(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR CommitRequest(::google::protobuf::internal::ConstantInitialized);
 
-  inline RunAggregationQueryRequest(const RunAggregationQueryRequest& from)
-      : RunAggregationQueryRequest(nullptr, from) {}
-  RunAggregationQueryRequest(RunAggregationQueryRequest&& from) noexcept
-    : RunAggregationQueryRequest() {
+  inline CommitRequest(const CommitRequest& from)
+      : CommitRequest(nullptr, from) {}
+  CommitRequest(CommitRequest&& from) noexcept
+    : CommitRequest() {
     *this = ::std::move(from);
   }
 
-  inline RunAggregationQueryRequest& operator=(const RunAggregationQueryRequest& from) {
+  inline CommitRequest& operator=(const CommitRequest& from) {
     CopyFrom(from);
     return *this;
   }
-  inline RunAggregationQueryRequest& operator=(RunAggregationQueryRequest&& from) noexcept {
+  inline CommitRequest& operator=(CommitRequest&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -6346,32 +6345,20 @@ class RunAggregationQueryRequest final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const RunAggregationQueryRequest& default_instance() {
+  static const CommitRequest& default_instance() {
     return *internal_default_instance();
   }
-  enum QueryTypeCase {
-    kStructuredAggregationQuery = 2,
-    QUERY_TYPE_NOT_SET = 0,
-  };
-
-  enum ConsistencySelectorCase {
-    kTransaction = 4,
-    kNewTransaction = 5,
-    kReadTime = 6,
-    CONSISTENCY_SELECTOR_NOT_SET = 0,
-  };
-
-  static inline const RunAggregationQueryRequest* internal_default_instance() {
-    return reinterpret_cast<const RunAggregationQueryRequest*>(
-               &_RunAggregationQueryRequest_default_instance_);
+  static inline const CommitRequest* internal_default_instance() {
+    return reinterpret_cast<const CommitRequest*>(
+               &_CommitRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    15;
+    10;
 
-  friend void swap(RunAggregationQueryRequest& a, RunAggregationQueryRequest& b) {
+  friend void swap(CommitRequest& a, CommitRequest& b) {
     a.Swap(&b);
   }
-  inline void Swap(RunAggregationQueryRequest* other) {
+  inline void Swap(CommitRequest* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -6384,7 +6371,7 @@ class RunAggregationQueryRequest final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(RunAggregationQueryRequest* other) {
+  void UnsafeArenaSwap(CommitRequest* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -6392,14 +6379,14 @@ class RunAggregationQueryRequest final :
 
   // implements Message ----------------------------------------------
 
-  RunAggregationQueryRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<RunAggregationQueryRequest>(arena);
+  CommitRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CommitRequest>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const RunAggregationQueryRequest& from);
+  void CopyFrom(const CommitRequest& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const RunAggregationQueryRequest& from) {
-    RunAggregationQueryRequest::MergeImpl(*this, from);
+  void MergeFrom( const CommitRequest& from) {
+    CommitRequest::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -6417,16 +6404,16 @@ class RunAggregationQueryRequest final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(RunAggregationQueryRequest* other);
+  void InternalSwap(CommitRequest* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.RunAggregationQueryRequest";
+    return "google.firestore.v1.CommitRequest";
   }
   protected:
-  explicit RunAggregationQueryRequest(::google::protobuf::Arena* arena);
-  RunAggregationQueryRequest(::google::protobuf::Arena* arena, const RunAggregationQueryRequest& from);
+  explicit CommitRequest(::google::protobuf::Arena* arena);
+  CommitRequest(::google::protobuf::Arena* arena, const CommitRequest& from);
   public:
 
   static const ClassData _class_data_;
@@ -6439,49 +6426,45 @@ class RunAggregationQueryRequest final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kParentFieldNumber = 1,
-    kStructuredAggregationQueryFieldNumber = 2,
-    kTransactionFieldNumber = 4,
-    kNewTransactionFieldNumber = 5,
-    kReadTimeFieldNumber = 6,
+    kWritesFieldNumber = 2,
+    kDatabaseFieldNumber = 1,
+    kTransactionFieldNumber = 3,
   };
-  // string parent = 1;
-  void clear_parent() ;
-  const std::string& parent() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_parent(Arg_&& arg, Args_... args);
-  std::string* mutable_parent();
-  PROTOBUF_NODISCARD std::string* release_parent();
-  void set_allocated_parent(std::string* value);
-
+  // repeated .google.firestore.v1.Write writes = 2;
+  int writes_size() const;
   private:
-  const std::string& _internal_parent() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
-      const std::string& value);
-  std::string* _internal_mutable_parent();
+  int _internal_writes_size() const;
 
   public:
-  // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
-  bool has_structured_aggregation_query() const;
+  void clear_writes() ;
+  ::google::firestore::v1::Write* mutable_writes(int index);
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >*
+      mutable_writes();
   private:
-  bool _internal_has_structured_aggregation_query() const;
-
+  const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>& _internal_writes() const;
+  ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>* _internal_mutable_writes();
   public:
-  void clear_structured_aggregation_query() ;
-  const ::google::firestore::v1::StructuredAggregationQuery& structured_aggregation_query() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::StructuredAggregationQuery* release_structured_aggregation_query();
-  ::google::firestore::v1::StructuredAggregationQuery* mutable_structured_aggregation_query();
-  void set_allocated_structured_aggregation_query(::google::firestore::v1::StructuredAggregationQuery* value);
-  void unsafe_arena_set_allocated_structured_aggregation_query(::google::firestore::v1::StructuredAggregationQuery* value);
-  ::google::firestore::v1::StructuredAggregationQuery* unsafe_arena_release_structured_aggregation_query();
+  const ::google::firestore::v1::Write& writes(int index) const;
+  ::google::firestore::v1::Write* add_writes();
+  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write >&
+      writes() const;
+  // string database = 1;
+  void clear_database() ;
+  const std::string& database() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_database(Arg_&& arg, Args_... args);
+  std::string* mutable_database();
+  PROTOBUF_NODISCARD std::string* release_database();
+  void set_allocated_database(std::string* value);
 
   private:
-  const ::google::firestore::v1::StructuredAggregationQuery& _internal_structured_aggregation_query() const;
-  ::google::firestore::v1::StructuredAggregationQuery* _internal_mutable_structured_aggregation_query();
+  const std::string& _internal_database() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_database(
+      const std::string& value);
+  std::string* _internal_mutable_database();
 
   public:
-  // bytes transaction = 4;
-  bool has_transaction() const;
+  // bytes transaction = 3;
   void clear_transaction() ;
   const std::string& transaction() const;
   template <typename Arg_ = const std::string&, typename... Args_>
@@ -6497,74 +6480,22 @@ class RunAggregationQueryRequest final :
   std::string* _internal_mutable_transaction();
 
   public:
-  // .google.firestore.v1.TransactionOptions new_transaction = 5;
-  bool has_new_transaction() const;
-  private:
-  bool _internal_has_new_transaction() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.CommitRequest)
+ private:
+  class _Internal;
 
-  public:
-  void clear_new_transaction() ;
-  const ::google::firestore::v1::TransactionOptions& new_transaction() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::TransactionOptions* release_new_transaction();
-  ::google::firestore::v1::TransactionOptions* mutable_new_transaction();
-  void set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
-  void unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
-  ::google::firestore::v1::TransactionOptions* unsafe_arena_release_new_transaction();
-
-  private:
-  const ::google::firestore::v1::TransactionOptions& _internal_new_transaction() const;
-  ::google::firestore::v1::TransactionOptions* _internal_mutable_new_transaction();
-
-  public:
-  // .google.protobuf.Timestamp read_time = 6;
-  bool has_read_time() const;
-  private:
-  bool _internal_has_read_time() const;
-
-  public:
-  void clear_read_time() ;
-  const ::google::protobuf::Timestamp& read_time() const;
-  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
-  ::google::protobuf::Timestamp* mutable_read_time();
-  void set_allocated_read_time(::google::protobuf::Timestamp* value);
-  void unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value);
-  ::google::protobuf::Timestamp* unsafe_arena_release_read_time();
-
-  private:
-  const ::google::protobuf::Timestamp& _internal_read_time() const;
-  ::google::protobuf::Timestamp* _internal_mutable_read_time();
-
-  public:
-  void clear_query_type();
-  QueryTypeCase query_type_case() const;
-  void clear_consistency_selector();
-  ConsistencySelectorCase consistency_selector_case() const;
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.RunAggregationQueryRequest)
- private:
-  class _Internal;
-  void set_has_structured_aggregation_query();
-  void set_has_transaction();
-  void set_has_new_transaction();
-  void set_has_read_time();
-
-  inline bool has_query_type() const;
-  inline void clear_has_query_type();
-
-  inline bool has_consistency_selector() const;
-  inline void clear_has_consistency_selector();
-
-  friend class ::google::protobuf::internal::TcParser;
-  static const ::google::protobuf::internal::TcParseTable<
-      0, 5, 3,
-      61, 2>
-      _table_;
-  friend class ::google::protobuf::MessageLite;
-  friend class ::google::protobuf::Arena;
-  template <typename T>
-  friend class ::google::protobuf::Arena::InternalHelper;
-  using InternalArenaConstructable_ = void;
-  using DestructorSkippable_ = void;
-  struct Impl_ {
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      2, 3, 1,
+      50, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
 
         inline explicit constexpr Impl_(
             ::google::protobuf::internal::ConstantInitialized) noexcept;
@@ -6572,48 +6503,36 @@ class RunAggregationQueryRequest final :
                               ::google::protobuf::Arena* arena);
         inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
                               ::google::protobuf::Arena* arena, const Impl_& from);
-    ::google::protobuf::internal::ArenaStringPtr parent_;
-    union QueryTypeUnion {
-      constexpr QueryTypeUnion() : _constinit_{} {}
-        ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::firestore::v1::StructuredAggregationQuery* structured_aggregation_query_;
-    } query_type_;
-    union ConsistencySelectorUnion {
-      constexpr ConsistencySelectorUnion() : _constinit_{} {}
-        ::google::protobuf::internal::ConstantInitialized _constinit_;
-      ::google::protobuf::internal::ArenaStringPtr transaction_;
-      ::google::firestore::v1::TransactionOptions* new_transaction_;
-      ::google::protobuf::Timestamp* read_time_;
-    } consistency_selector_;
+    ::google::protobuf::RepeatedPtrField< ::google::firestore::v1::Write > writes_;
+    ::google::protobuf::internal::ArenaStringPtr database_;
+    ::google::protobuf::internal::ArenaStringPtr transaction_;
     mutable ::google::protobuf::internal::CachedSize _cached_size_;
-    ::uint32_t _oneof_case_[2];
-
     PROTOBUF_TSAN_DECLARE_MEMBER
   };
   union { Impl_ _impl_; };
   friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
 };// -------------------------------------------------------------------
 
-class ListenRequest final :
-    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.ListenRequest) */ {
+class Target final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.Target) */ {
  public:
-  inline ListenRequest() : ListenRequest(nullptr) {}
-  ~ListenRequest() override;
+  inline Target() : Target(nullptr) {}
+  ~Target() override;
   template<typename = void>
-  explicit PROTOBUF_CONSTEXPR ListenRequest(::google::protobuf::internal::ConstantInitialized);
+  explicit PROTOBUF_CONSTEXPR Target(::google::protobuf::internal::ConstantInitialized);
 
-  inline ListenRequest(const ListenRequest& from)
-      : ListenRequest(nullptr, from) {}
-  ListenRequest(ListenRequest&& from) noexcept
-    : ListenRequest() {
+  inline Target(const Target& from)
+      : Target(nullptr, from) {}
+  Target(Target&& from) noexcept
+    : Target() {
     *this = ::std::move(from);
   }
 
-  inline ListenRequest& operator=(const ListenRequest& from) {
+  inline Target& operator=(const Target& from) {
     CopyFrom(from);
     return *this;
   }
-  inline ListenRequest& operator=(ListenRequest&& from) noexcept {
+  inline Target& operator=(Target&& from) noexcept {
     if (this == &from) return *this;
     if (GetArena() == from.GetArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -6645,26 +6564,32 @@ class ListenRequest final :
   static const ::google::protobuf::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const ListenRequest& default_instance() {
+  static const Target& default_instance() {
     return *internal_default_instance();
   }
-  enum TargetChangeCase {
-    kAddTarget = 2,
-    kRemoveTarget = 3,
-    TARGET_CHANGE_NOT_SET = 0,
+  enum TargetTypeCase {
+    kQuery = 2,
+    kDocuments = 3,
+    TARGET_TYPE_NOT_SET = 0,
   };
 
-  static inline const ListenRequest* internal_default_instance() {
-    return reinterpret_cast<const ListenRequest*>(
-               &_ListenRequest_default_instance_);
+  enum ResumeTypeCase {
+    kResumeToken = 4,
+    kReadTime = 11,
+    RESUME_TYPE_NOT_SET = 0,
+  };
+
+  static inline const Target* internal_default_instance() {
+    return reinterpret_cast<const Target*>(
+               &_Target_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    21;
+    27;
 
-  friend void swap(ListenRequest& a, ListenRequest& b) {
+  friend void swap(Target& a, Target& b) {
     a.Swap(&b);
   }
-  inline void Swap(ListenRequest* other) {
+  inline void Swap(Target* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetArena() != nullptr &&
@@ -6677,7 +6602,7 @@ class ListenRequest final :
       ::google::protobuf::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(ListenRequest* other) {
+  void UnsafeArenaSwap(Target* other) {
     if (other == this) return;
     ABSL_DCHECK(GetArena() == other->GetArena());
     InternalSwap(other);
@@ -6685,14 +6610,14 @@ class ListenRequest final :
 
   // implements Message ----------------------------------------------
 
-  ListenRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<ListenRequest>(arena);
+  Target* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Target>(arena);
   }
   using ::google::protobuf::Message::CopyFrom;
-  void CopyFrom(const ListenRequest& from);
+  void CopyFrom(const Target& from);
   using ::google::protobuf::Message::MergeFrom;
-  void MergeFrom( const ListenRequest& from) {
-    ListenRequest::MergeImpl(*this, from);
+  void MergeFrom( const Target& from) {
+    Target::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
@@ -6710,16 +6635,16 @@ class ListenRequest final :
   ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
   void SharedCtor(::google::protobuf::Arena* arena);
   void SharedDtor();
-  void InternalSwap(ListenRequest* other);
+  void InternalSwap(Target* other);
 
   private:
   friend class ::google::protobuf::internal::AnyMetadata;
   static ::absl::string_view FullMessageName() {
-    return "google.firestore.v1.ListenRequest";
+    return "google.firestore.v1.Target";
   }
   protected:
-  explicit ListenRequest(::google::protobuf::Arena* arena);
-  ListenRequest(::google::protobuf::Arena* arena, const ListenRequest& from);
+  explicit Target(::google::protobuf::Arena* arena);
+  Target(::google::protobuf::Arena* arena, const Target& from);
   public:
 
   static const ClassData _class_data_;
@@ -6729,90 +6654,709 @@ class ListenRequest final :
 
   // nested types ----------------------------------------------------
 
+  using DocumentsTarget = Target_DocumentsTarget;
+  using QueryTarget = Target_QueryTarget;
 
   // accessors -------------------------------------------------------
 
   enum : int {
-    kLabelsFieldNumber = 4,
-    kDatabaseFieldNumber = 1,
-    kAddTargetFieldNumber = 2,
-    kRemoveTargetFieldNumber = 3,
+    kExpectedCountFieldNumber = 12,
+    kTargetIdFieldNumber = 5,
+    kOnceFieldNumber = 6,
+    kQueryFieldNumber = 2,
+    kDocumentsFieldNumber = 3,
+    kResumeTokenFieldNumber = 4,
+    kReadTimeFieldNumber = 11,
   };
-  // map<string, string> labels = 4;
-  int labels_size() const;
+  // .google.protobuf.Int32Value expected_count = 12;
+  bool has_expected_count() const;
+  void clear_expected_count() ;
+  const ::google::protobuf::Int32Value& expected_count() const;
+  PROTOBUF_NODISCARD ::google::protobuf::Int32Value* release_expected_count();
+  ::google::protobuf::Int32Value* mutable_expected_count();
+  void set_allocated_expected_count(::google::protobuf::Int32Value* value);
+  void unsafe_arena_set_allocated_expected_count(::google::protobuf::Int32Value* value);
+  ::google::protobuf::Int32Value* unsafe_arena_release_expected_count();
+
   private:
-  int _internal_labels_size() const;
+  const ::google::protobuf::Int32Value& _internal_expected_count() const;
+  ::google::protobuf::Int32Value* _internal_mutable_expected_count();
 
   public:
-  void clear_labels() ;
-  const ::google::protobuf::Map<std::string, std::string>& labels() const;
-  ::google::protobuf::Map<std::string, std::string>* mutable_labels();
+  // int32 target_id = 5;
+  void clear_target_id() ;
+  ::int32_t target_id() const;
+  void set_target_id(::int32_t value);
 
   private:
-  const ::google::protobuf::Map<std::string, std::string>& _internal_labels() const;
-  ::google::protobuf::Map<std::string, std::string>* _internal_mutable_labels();
+  ::int32_t _internal_target_id() const;
+  void _internal_set_target_id(::int32_t value);
 
   public:
-  // string database = 1;
-  void clear_database() ;
-  const std::string& database() const;
-  template <typename Arg_ = const std::string&, typename... Args_>
-  void set_database(Arg_&& arg, Args_... args);
-  std::string* mutable_database();
-  PROTOBUF_NODISCARD std::string* release_database();
-  void set_allocated_database(std::string* value);
+  // bool once = 6;
+  void clear_once() ;
+  bool once() const;
+  void set_once(bool value);
 
   private:
-  const std::string& _internal_database() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_database(
-      const std::string& value);
-  std::string* _internal_mutable_database();
+  bool _internal_once() const;
+  void _internal_set_once(bool value);
 
   public:
-  // .google.firestore.v1.Target add_target = 2;
-  bool has_add_target() const;
+  // .google.firestore.v1.Target.QueryTarget query = 2;
+  bool has_query() const;
   private:
-  bool _internal_has_add_target() const;
+  bool _internal_has_query() const;
 
   public:
-  void clear_add_target() ;
-  const ::google::firestore::v1::Target& add_target() const;
-  PROTOBUF_NODISCARD ::google::firestore::v1::Target* release_add_target();
-  ::google::firestore::v1::Target* mutable_add_target();
-  void set_allocated_add_target(::google::firestore::v1::Target* value);
-  void unsafe_arena_set_allocated_add_target(::google::firestore::v1::Target* value);
-  ::google::firestore::v1::Target* unsafe_arena_release_add_target();
+  void clear_query() ;
+  const ::google::firestore::v1::Target_QueryTarget& query() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Target_QueryTarget* release_query();
+  ::google::firestore::v1::Target_QueryTarget* mutable_query();
+  void set_allocated_query(::google::firestore::v1::Target_QueryTarget* value);
+  void unsafe_arena_set_allocated_query(::google::firestore::v1::Target_QueryTarget* value);
+  ::google::firestore::v1::Target_QueryTarget* unsafe_arena_release_query();
 
   private:
-  const ::google::firestore::v1::Target& _internal_add_target() const;
-  ::google::firestore::v1::Target* _internal_mutable_add_target();
+  const ::google::firestore::v1::Target_QueryTarget& _internal_query() const;
+  ::google::firestore::v1::Target_QueryTarget* _internal_mutable_query();
 
   public:
-  // int32 remove_target = 3;
-  bool has_remove_target() const;
-  void clear_remove_target() ;
-  ::int32_t remove_target() const;
-  void set_remove_target(::int32_t value);
-
+  // .google.firestore.v1.Target.DocumentsTarget documents = 3;
+  bool has_documents() const;
   private:
-  ::int32_t _internal_remove_target() const;
-  void _internal_set_remove_target(::int32_t value);
+  bool _internal_has_documents() const;
 
   public:
-  void clear_target_change();
-  TargetChangeCase target_change_case() const;
-  // @@protoc_insertion_point(class_scope:google.firestore.v1.ListenRequest)
- private:
-  class _Internal;
-  void set_has_add_target();
-  void set_has_remove_target();
+  void clear_documents() ;
+  const ::google::firestore::v1::Target_DocumentsTarget& documents() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Target_DocumentsTarget* release_documents();
+  ::google::firestore::v1::Target_DocumentsTarget* mutable_documents();
+  void set_allocated_documents(::google::firestore::v1::Target_DocumentsTarget* value);
+  void unsafe_arena_set_allocated_documents(::google::firestore::v1::Target_DocumentsTarget* value);
+  ::google::firestore::v1::Target_DocumentsTarget* unsafe_arena_release_documents();
 
-  inline bool has_target_change() const;
-  inline void clear_has_target_change();
+  private:
+  const ::google::firestore::v1::Target_DocumentsTarget& _internal_documents() const;
+  ::google::firestore::v1::Target_DocumentsTarget* _internal_mutable_documents();
 
-  friend class ::google::protobuf::internal::TcParser;
-  static const ::google::protobuf::internal::TcParseTable<
-      0, 4, 2,
+  public:
+  // bytes resume_token = 4;
+  bool has_resume_token() const;
+  void clear_resume_token() ;
+  const std::string& resume_token() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_resume_token(Arg_&& arg, Args_... args);
+  std::string* mutable_resume_token();
+  PROTOBUF_NODISCARD std::string* release_resume_token();
+  void set_allocated_resume_token(std::string* value);
+
+  private:
+  const std::string& _internal_resume_token() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_resume_token(
+      const std::string& value);
+  std::string* _internal_mutable_resume_token();
+
+  public:
+  // .google.protobuf.Timestamp read_time = 11;
+  bool has_read_time() const;
+  private:
+  bool _internal_has_read_time() const;
+
+  public:
+  void clear_read_time() ;
+  const ::google::protobuf::Timestamp& read_time() const;
+  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
+  ::google::protobuf::Timestamp* mutable_read_time();
+  void set_allocated_read_time(::google::protobuf::Timestamp* value);
+  void unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value);
+  ::google::protobuf::Timestamp* unsafe_arena_release_read_time();
+
+  private:
+  const ::google::protobuf::Timestamp& _internal_read_time() const;
+  ::google::protobuf::Timestamp* _internal_mutable_read_time();
+
+  public:
+  void clear_target_type();
+  TargetTypeCase target_type_case() const;
+  void clear_resume_type();
+  ResumeTypeCase resume_type_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.Target)
+ private:
+  class _Internal;
+  void set_has_query();
+  void set_has_documents();
+  void set_has_resume_token();
+  void set_has_read_time();
+
+  inline bool has_target_type() const;
+  inline void clear_has_target_type();
+
+  inline bool has_resume_type() const;
+  inline void clear_has_resume_type();
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      2, 7, 4,
+      0, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
+
+        inline explicit constexpr Impl_(
+            ::google::protobuf::internal::ConstantInitialized) noexcept;
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena);
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena, const Impl_& from);
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::Int32Value* expected_count_;
+    ::int32_t target_id_;
+    bool once_;
+    union TargetTypeUnion {
+      constexpr TargetTypeUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::firestore::v1::Target_QueryTarget* query_;
+      ::google::firestore::v1::Target_DocumentsTarget* documents_;
+    } target_type_;
+    union ResumeTypeUnion {
+      constexpr ResumeTypeUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::protobuf::internal::ArenaStringPtr resume_token_;
+      ::google::protobuf::Timestamp* read_time_;
+    } resume_type_;
+    ::uint32_t _oneof_case_[2];
+
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
+};// -------------------------------------------------------------------
+
+class RunAggregationQueryRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.RunAggregationQueryRequest) */ {
+ public:
+  inline RunAggregationQueryRequest() : RunAggregationQueryRequest(nullptr) {}
+  ~RunAggregationQueryRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR RunAggregationQueryRequest(::google::protobuf::internal::ConstantInitialized);
+
+  inline RunAggregationQueryRequest(const RunAggregationQueryRequest& from)
+      : RunAggregationQueryRequest(nullptr, from) {}
+  RunAggregationQueryRequest(RunAggregationQueryRequest&& from) noexcept
+    : RunAggregationQueryRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline RunAggregationQueryRequest& operator=(const RunAggregationQueryRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline RunAggregationQueryRequest& operator=(RunAggregationQueryRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetArena() == from.GetArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields()
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const RunAggregationQueryRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  enum QueryTypeCase {
+    kStructuredAggregationQuery = 2,
+    QUERY_TYPE_NOT_SET = 0,
+  };
+
+  enum ConsistencySelectorCase {
+    kTransaction = 4,
+    kNewTransaction = 5,
+    kReadTime = 6,
+    CONSISTENCY_SELECTOR_NOT_SET = 0,
+  };
+
+  static inline const RunAggregationQueryRequest* internal_default_instance() {
+    return reinterpret_cast<const RunAggregationQueryRequest*>(
+               &_RunAggregationQueryRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    17;
+
+  friend void swap(RunAggregationQueryRequest& a, RunAggregationQueryRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(RunAggregationQueryRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() != nullptr &&
+        GetArena() == other->GetArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() == other->GetArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(RunAggregationQueryRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetArena() == other->GetArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  RunAggregationQueryRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<RunAggregationQueryRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const RunAggregationQueryRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const RunAggregationQueryRequest& from) {
+    RunAggregationQueryRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const { return _impl_._cached_size_.Get(); }
+
+  private:
+  ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void InternalSwap(RunAggregationQueryRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "google.firestore.v1.RunAggregationQueryRequest";
+  }
+  protected:
+  explicit RunAggregationQueryRequest(::google::protobuf::Arena* arena);
+  RunAggregationQueryRequest(::google::protobuf::Arena* arena, const RunAggregationQueryRequest& from);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kParentFieldNumber = 1,
+    kStructuredAggregationQueryFieldNumber = 2,
+    kTransactionFieldNumber = 4,
+    kNewTransactionFieldNumber = 5,
+    kReadTimeFieldNumber = 6,
+  };
+  // string parent = 1;
+  void clear_parent() ;
+  const std::string& parent() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_parent(Arg_&& arg, Args_... args);
+  std::string* mutable_parent();
+  PROTOBUF_NODISCARD std::string* release_parent();
+  void set_allocated_parent(std::string* value);
+
+  private:
+  const std::string& _internal_parent() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_parent(
+      const std::string& value);
+  std::string* _internal_mutable_parent();
+
+  public:
+  // .google.firestore.v1.StructuredAggregationQuery structured_aggregation_query = 2;
+  bool has_structured_aggregation_query() const;
+  private:
+  bool _internal_has_structured_aggregation_query() const;
+
+  public:
+  void clear_structured_aggregation_query() ;
+  const ::google::firestore::v1::StructuredAggregationQuery& structured_aggregation_query() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::StructuredAggregationQuery* release_structured_aggregation_query();
+  ::google::firestore::v1::StructuredAggregationQuery* mutable_structured_aggregation_query();
+  void set_allocated_structured_aggregation_query(::google::firestore::v1::StructuredAggregationQuery* value);
+  void unsafe_arena_set_allocated_structured_aggregation_query(::google::firestore::v1::StructuredAggregationQuery* value);
+  ::google::firestore::v1::StructuredAggregationQuery* unsafe_arena_release_structured_aggregation_query();
+
+  private:
+  const ::google::firestore::v1::StructuredAggregationQuery& _internal_structured_aggregation_query() const;
+  ::google::firestore::v1::StructuredAggregationQuery* _internal_mutable_structured_aggregation_query();
+
+  public:
+  // bytes transaction = 4;
+  bool has_transaction() const;
+  void clear_transaction() ;
+  const std::string& transaction() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_transaction(Arg_&& arg, Args_... args);
+  std::string* mutable_transaction();
+  PROTOBUF_NODISCARD std::string* release_transaction();
+  void set_allocated_transaction(std::string* value);
+
+  private:
+  const std::string& _internal_transaction() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_transaction(
+      const std::string& value);
+  std::string* _internal_mutable_transaction();
+
+  public:
+  // .google.firestore.v1.TransactionOptions new_transaction = 5;
+  bool has_new_transaction() const;
+  private:
+  bool _internal_has_new_transaction() const;
+
+  public:
+  void clear_new_transaction() ;
+  const ::google::firestore::v1::TransactionOptions& new_transaction() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::TransactionOptions* release_new_transaction();
+  ::google::firestore::v1::TransactionOptions* mutable_new_transaction();
+  void set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
+  void unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value);
+  ::google::firestore::v1::TransactionOptions* unsafe_arena_release_new_transaction();
+
+  private:
+  const ::google::firestore::v1::TransactionOptions& _internal_new_transaction() const;
+  ::google::firestore::v1::TransactionOptions* _internal_mutable_new_transaction();
+
+  public:
+  // .google.protobuf.Timestamp read_time = 6;
+  bool has_read_time() const;
+  private:
+  bool _internal_has_read_time() const;
+
+  public:
+  void clear_read_time() ;
+  const ::google::protobuf::Timestamp& read_time() const;
+  PROTOBUF_NODISCARD ::google::protobuf::Timestamp* release_read_time();
+  ::google::protobuf::Timestamp* mutable_read_time();
+  void set_allocated_read_time(::google::protobuf::Timestamp* value);
+  void unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value);
+  ::google::protobuf::Timestamp* unsafe_arena_release_read_time();
+
+  private:
+  const ::google::protobuf::Timestamp& _internal_read_time() const;
+  ::google::protobuf::Timestamp* _internal_mutable_read_time();
+
+  public:
+  void clear_query_type();
+  QueryTypeCase query_type_case() const;
+  void clear_consistency_selector();
+  ConsistencySelectorCase consistency_selector_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.RunAggregationQueryRequest)
+ private:
+  class _Internal;
+  void set_has_structured_aggregation_query();
+  void set_has_transaction();
+  void set_has_new_transaction();
+  void set_has_read_time();
+
+  inline bool has_query_type() const;
+  inline void clear_has_query_type();
+
+  inline bool has_consistency_selector() const;
+  inline void clear_has_consistency_selector();
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      0, 5, 3,
+      61, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
+
+        inline explicit constexpr Impl_(
+            ::google::protobuf::internal::ConstantInitialized) noexcept;
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena);
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena, const Impl_& from);
+    ::google::protobuf::internal::ArenaStringPtr parent_;
+    union QueryTypeUnion {
+      constexpr QueryTypeUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::firestore::v1::StructuredAggregationQuery* structured_aggregation_query_;
+    } query_type_;
+    union ConsistencySelectorUnion {
+      constexpr ConsistencySelectorUnion() : _constinit_{} {}
+        ::google::protobuf::internal::ConstantInitialized _constinit_;
+      ::google::protobuf::internal::ArenaStringPtr transaction_;
+      ::google::firestore::v1::TransactionOptions* new_transaction_;
+      ::google::protobuf::Timestamp* read_time_;
+    } consistency_selector_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::uint32_t _oneof_case_[2];
+
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2ffirestore_2eproto;
+};// -------------------------------------------------------------------
+
+class ListenRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.ListenRequest) */ {
+ public:
+  inline ListenRequest() : ListenRequest(nullptr) {}
+  ~ListenRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ListenRequest(::google::protobuf::internal::ConstantInitialized);
+
+  inline ListenRequest(const ListenRequest& from)
+      : ListenRequest(nullptr, from) {}
+  ListenRequest(ListenRequest&& from) noexcept
+    : ListenRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline ListenRequest& operator=(const ListenRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ListenRequest& operator=(ListenRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetArena() == from.GetArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields()
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ListenRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  enum TargetChangeCase {
+    kAddTarget = 2,
+    kRemoveTarget = 3,
+    TARGET_CHANGE_NOT_SET = 0,
+  };
+
+  static inline const ListenRequest* internal_default_instance() {
+    return reinterpret_cast<const ListenRequest*>(
+               &_ListenRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    23;
+
+  friend void swap(ListenRequest& a, ListenRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ListenRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() != nullptr &&
+        GetArena() == other->GetArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() == other->GetArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ListenRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetArena() == other->GetArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ListenRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListenRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ListenRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ListenRequest& from) {
+    ListenRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const { return _impl_._cached_size_.Get(); }
+
+  private:
+  ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void InternalSwap(ListenRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "google.firestore.v1.ListenRequest";
+  }
+  protected:
+  explicit ListenRequest(::google::protobuf::Arena* arena);
+  ListenRequest(::google::protobuf::Arena* arena, const ListenRequest& from);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kLabelsFieldNumber = 4,
+    kDatabaseFieldNumber = 1,
+    kAddTargetFieldNumber = 2,
+    kRemoveTargetFieldNumber = 3,
+  };
+  // map<string, string> labels = 4;
+  int labels_size() const;
+  private:
+  int _internal_labels_size() const;
+
+  public:
+  void clear_labels() ;
+  const ::google::protobuf::Map<std::string, std::string>& labels() const;
+  ::google::protobuf::Map<std::string, std::string>* mutable_labels();
+
+  private:
+  const ::google::protobuf::Map<std::string, std::string>& _internal_labels() const;
+  ::google::protobuf::Map<std::string, std::string>* _internal_mutable_labels();
+
+  public:
+  // string database = 1;
+  void clear_database() ;
+  const std::string& database() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_database(Arg_&& arg, Args_... args);
+  std::string* mutable_database();
+  PROTOBUF_NODISCARD std::string* release_database();
+  void set_allocated_database(std::string* value);
+
+  private:
+  const std::string& _internal_database() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_database(
+      const std::string& value);
+  std::string* _internal_mutable_database();
+
+  public:
+  // .google.firestore.v1.Target add_target = 2;
+  bool has_add_target() const;
+  private:
+  bool _internal_has_add_target() const;
+
+  public:
+  void clear_add_target() ;
+  const ::google::firestore::v1::Target& add_target() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Target* release_add_target();
+  ::google::firestore::v1::Target* mutable_add_target();
+  void set_allocated_add_target(::google::firestore::v1::Target* value);
+  void unsafe_arena_set_allocated_add_target(::google::firestore::v1::Target* value);
+  ::google::firestore::v1::Target* unsafe_arena_release_add_target();
+
+  private:
+  const ::google::firestore::v1::Target& _internal_add_target() const;
+  ::google::firestore::v1::Target* _internal_mutable_add_target();
+
+  public:
+  // int32 remove_target = 3;
+  bool has_remove_target() const;
+  void clear_remove_target() ;
+  ::int32_t remove_target() const;
+  void set_remove_target(::int32_t value);
+
+  private:
+  ::int32_t _internal_remove_target() const;
+  void _internal_set_remove_target(::int32_t value);
+
+  public:
+  void clear_target_change();
+  TargetChangeCase target_change_case() const;
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.ListenRequest)
+ private:
+  class _Internal;
+  void set_has_add_target();
+  void set_has_remove_target();
+
+  inline bool has_target_change() const;
+  inline void clear_has_target_change();
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      0, 4, 2,
       56, 2>
       _table_;
   friend class ::google::protobuf::MessageLite;
@@ -7669,320 +8213,779 @@ inline bool ListDocumentsRequest::_internal_show_missing() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
   return _impl_.show_missing_;
 }
-inline void ListDocumentsRequest::_internal_set_show_missing(bool value) {
+inline void ListDocumentsRequest::_internal_set_show_missing(bool value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.show_missing_ = value;
+}
+
+inline bool ListDocumentsRequest::has_consistency_selector() const {
+  return consistency_selector_case() != CONSISTENCY_SELECTOR_NOT_SET;
+}
+inline void ListDocumentsRequest::clear_has_consistency_selector() {
+  _impl_._oneof_case_[0] = CONSISTENCY_SELECTOR_NOT_SET;
+}
+inline ListDocumentsRequest::ConsistencySelectorCase ListDocumentsRequest::consistency_selector_case() const {
+  return ListDocumentsRequest::ConsistencySelectorCase(_impl_._oneof_case_[0]);
+}
+// -------------------------------------------------------------------
+
+// ListDocumentsResponse
+
+// repeated .google.firestore.v1.Document documents = 1;
+inline int ListDocumentsResponse::_internal_documents_size() const {
+  return _internal_documents().size();
+}
+inline int ListDocumentsResponse::documents_size() const {
+  return _internal_documents_size();
+}
+inline ::google::firestore::v1::Document* ListDocumentsResponse::mutable_documents(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ListDocumentsResponse.documents)
+  return _internal_mutable_documents()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>* ListDocumentsResponse::mutable_documents()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.ListDocumentsResponse.documents)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_documents();
+}
+inline const ::google::firestore::v1::Document& ListDocumentsResponse::documents(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ListDocumentsResponse.documents)
+  return _internal_documents().Get(index);
+}
+inline ::google::firestore::v1::Document* ListDocumentsResponse::add_documents() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::google::firestore::v1::Document* _add = _internal_mutable_documents()->Add();
+  // @@protoc_insertion_point(field_add:google.firestore.v1.ListDocumentsResponse.documents)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>& ListDocumentsResponse::documents() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.ListDocumentsResponse.documents)
+  return _internal_documents();
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>&
+ListDocumentsResponse::_internal_documents() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.documents_;
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>*
+ListDocumentsResponse::_internal_mutable_documents() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.documents_;
+}
+
+// string next_page_token = 2;
+inline void ListDocumentsResponse::clear_next_page_token() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.next_page_token_.ClearToEmpty();
+}
+inline const std::string& ListDocumentsResponse::next_page_token() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ListDocumentsResponse.next_page_token)
+  return _internal_next_page_token();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void ListDocumentsResponse::set_next_page_token(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.next_page_token_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.ListDocumentsResponse.next_page_token)
+}
+inline std::string* ListDocumentsResponse::mutable_next_page_token() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_next_page_token();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ListDocumentsResponse.next_page_token)
+  return _s;
+}
+inline const std::string& ListDocumentsResponse::_internal_next_page_token() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.next_page_token_.Get();
+}
+inline void ListDocumentsResponse::_internal_set_next_page_token(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.next_page_token_.Set(value, GetArena());
+}
+inline std::string* ListDocumentsResponse::_internal_mutable_next_page_token() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.next_page_token_.Mutable( GetArena());
+}
+inline std::string* ListDocumentsResponse::release_next_page_token() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ListDocumentsResponse.next_page_token)
+  return _impl_.next_page_token_.Release();
+}
+inline void ListDocumentsResponse::set_allocated_next_page_token(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.next_page_token_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.next_page_token_.IsDefault()) {
+          _impl_.next_page_token_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ListDocumentsResponse.next_page_token)
+}
+
+// -------------------------------------------------------------------
+
+// CreateDocumentRequest
+
+// string parent = 1;
+inline void CreateDocumentRequest::clear_parent() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.parent_.ClearToEmpty();
+}
+inline const std::string& CreateDocumentRequest::parent() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.parent)
+  return _internal_parent();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CreateDocumentRequest::set_parent(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.parent_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.CreateDocumentRequest.parent)
+}
+inline std::string* CreateDocumentRequest::mutable_parent() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_parent();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.parent)
+  return _s;
+}
+inline const std::string& CreateDocumentRequest::_internal_parent() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.parent_.Get();
+}
+inline void CreateDocumentRequest::_internal_set_parent(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.parent_.Set(value, GetArena());
+}
+inline std::string* CreateDocumentRequest::_internal_mutable_parent() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.parent_.Mutable( GetArena());
+}
+inline std::string* CreateDocumentRequest::release_parent() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.parent)
+  return _impl_.parent_.Release();
+}
+inline void CreateDocumentRequest::set_allocated_parent(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.parent_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.parent_.IsDefault()) {
+          _impl_.parent_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.parent)
+}
+
+// string collection_id = 2;
+inline void CreateDocumentRequest::clear_collection_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.collection_id_.ClearToEmpty();
+}
+inline const std::string& CreateDocumentRequest::collection_id() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.collection_id)
+  return _internal_collection_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CreateDocumentRequest::set_collection_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.collection_id_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.CreateDocumentRequest.collection_id)
+}
+inline std::string* CreateDocumentRequest::mutable_collection_id() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_collection_id();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.collection_id)
+  return _s;
+}
+inline const std::string& CreateDocumentRequest::_internal_collection_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.collection_id_.Get();
+}
+inline void CreateDocumentRequest::_internal_set_collection_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.collection_id_.Set(value, GetArena());
+}
+inline std::string* CreateDocumentRequest::_internal_mutable_collection_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.collection_id_.Mutable( GetArena());
+}
+inline std::string* CreateDocumentRequest::release_collection_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.collection_id)
+  return _impl_.collection_id_.Release();
+}
+inline void CreateDocumentRequest::set_allocated_collection_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.collection_id_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.collection_id_.IsDefault()) {
+          _impl_.collection_id_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.collection_id)
+}
+
+// string document_id = 3;
+inline void CreateDocumentRequest::clear_document_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.document_id_.ClearToEmpty();
+}
+inline const std::string& CreateDocumentRequest::document_id() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.document_id)
+  return _internal_document_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CreateDocumentRequest::set_document_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.document_id_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.CreateDocumentRequest.document_id)
+}
+inline std::string* CreateDocumentRequest::mutable_document_id() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_document_id();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.document_id)
+  return _s;
+}
+inline const std::string& CreateDocumentRequest::_internal_document_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.document_id_.Get();
+}
+inline void CreateDocumentRequest::_internal_set_document_id(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  _impl_.show_missing_ = value;
+  _impl_.document_id_.Set(value, GetArena());
 }
-
-inline bool ListDocumentsRequest::has_consistency_selector() const {
-  return consistency_selector_case() != CONSISTENCY_SELECTOR_NOT_SET;
+inline std::string* CreateDocumentRequest::_internal_mutable_document_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.document_id_.Mutable( GetArena());
 }
-inline void ListDocumentsRequest::clear_has_consistency_selector() {
-  _impl_._oneof_case_[0] = CONSISTENCY_SELECTOR_NOT_SET;
+inline std::string* CreateDocumentRequest::release_document_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.document_id)
+  return _impl_.document_id_.Release();
 }
-inline ListDocumentsRequest::ConsistencySelectorCase ListDocumentsRequest::consistency_selector_case() const {
-  return ListDocumentsRequest::ConsistencySelectorCase(_impl_._oneof_case_[0]);
+inline void CreateDocumentRequest::set_allocated_document_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.document_id_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.document_id_.IsDefault()) {
+          _impl_.document_id_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.document_id)
 }
-// -------------------------------------------------------------------
-
-// ListDocumentsResponse
 
-// repeated .google.firestore.v1.Document documents = 1;
-inline int ListDocumentsResponse::_internal_documents_size() const {
-  return _internal_documents().size();
+// .google.firestore.v1.Document document = 4;
+inline bool CreateDocumentRequest::has_document() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.document_ != nullptr);
+  return value;
 }
-inline int ListDocumentsResponse::documents_size() const {
-  return _internal_documents_size();
+inline const ::google::firestore::v1::Document& CreateDocumentRequest::_internal_document() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::google::firestore::v1::Document* p = _impl_.document_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
 }
-inline ::google::firestore::v1::Document* ListDocumentsResponse::mutable_documents(int index)
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ListDocumentsResponse.documents)
-  return _internal_mutable_documents()->Mutable(index);
+inline const ::google::firestore::v1::Document& CreateDocumentRequest::document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.document)
+  return _internal_document();
 }
-inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>* ListDocumentsResponse::mutable_documents()
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.ListDocumentsResponse.documents)
+inline void CreateDocumentRequest::unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  return _internal_mutable_documents();
-}
-inline const ::google::firestore::v1::Document& ListDocumentsResponse::documents(int index) const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.ListDocumentsResponse.documents)
-  return _internal_documents().Get(index);
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+  }
+  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.CreateDocumentRequest.document)
 }
-inline ::google::firestore::v1::Document* ListDocumentsResponse::add_documents() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline ::google::firestore::v1::Document* CreateDocumentRequest::release_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ::google::firestore::v1::Document* _add = _internal_mutable_documents()->Add();
-  // @@protoc_insertion_point(field_add:google.firestore.v1.ListDocumentsResponse.documents)
-  return _add;
-}
-inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>& ListDocumentsResponse::documents() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_list:google.firestore.v1.ListDocumentsResponse.documents)
-  return _internal_documents();
-}
-inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>&
-ListDocumentsResponse::_internal_documents() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.documents_;
-}
-inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>*
-ListDocumentsResponse::_internal_mutable_documents() {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return &_impl_.documents_;
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Document* released = _impl_.document_;
+  _impl_.document_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
 }
+inline ::google::firestore::v1::Document* CreateDocumentRequest::unsafe_arena_release_document() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.document)
 
-// string next_page_token = 2;
-inline void ListDocumentsResponse::clear_next_page_token() {
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Document* temp = _impl_.document_;
+  _impl_.document_ = nullptr;
+  return temp;
+}
+inline ::google::firestore::v1::Document* CreateDocumentRequest::_internal_mutable_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.next_page_token_.ClearToEmpty();
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.document_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
+    _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(p);
+  }
+  return _impl_.document_;
 }
-inline const std::string& ListDocumentsResponse::next_page_token() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.ListDocumentsResponse.next_page_token)
-  return _internal_next_page_token();
+inline ::google::firestore::v1::Document* CreateDocumentRequest::mutable_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Document* _msg = _internal_mutable_document();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.document)
+  return _msg;
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void ListDocumentsResponse::set_next_page_token(Arg_&& arg,
-                                                     Args_... args) {
+inline void CreateDocumentRequest::set_allocated_document(::google::firestore::v1::Document* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.next_page_token_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.ListDocumentsResponse.next_page_token)
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.document)
 }
-inline std::string* ListDocumentsResponse::mutable_next_page_token() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_next_page_token();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ListDocumentsResponse.next_page_token)
-  return _s;
+
+// .google.firestore.v1.DocumentMask mask = 5;
+inline bool CreateDocumentRequest::has_mask() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.mask_ != nullptr);
+  return value;
 }
-inline const std::string& ListDocumentsResponse::_internal_next_page_token() const {
+inline const ::google::firestore::v1::DocumentMask& CreateDocumentRequest::_internal_mask() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.next_page_token_.Get();
+  const ::google::firestore::v1::DocumentMask* p = _impl_.mask_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
 }
-inline void ListDocumentsResponse::_internal_set_next_page_token(const std::string& value) {
+inline const ::google::firestore::v1::DocumentMask& CreateDocumentRequest::mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.mask)
+  return _internal_mask();
+}
+inline void CreateDocumentRequest::unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.next_page_token_.Set(value, GetArena());
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+  }
+  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.CreateDocumentRequest.mask)
 }
-inline std::string* ListDocumentsResponse::_internal_mutable_next_page_token() {
+inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::release_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.next_page_token_.Mutable( GetArena());
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::google::firestore::v1::DocumentMask* released = _impl_.mask_;
+  _impl_.mask_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
 }
-inline std::string* ListDocumentsResponse::release_next_page_token() {
+inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::unsafe_arena_release_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.ListDocumentsResponse.next_page_token)
-  return _impl_.next_page_token_.Release();
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.mask)
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::google::firestore::v1::DocumentMask* temp = _impl_.mask_;
+  _impl_.mask_ = nullptr;
+  return temp;
 }
-inline void ListDocumentsResponse::set_allocated_next_page_token(std::string* value) {
+inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::_internal_mutable_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.next_page_token_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.next_page_token_.IsDefault()) {
-          _impl_.next_page_token_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ListDocumentsResponse.next_page_token)
+  _impl_._has_bits_[0] |= 0x00000002u;
+  if (_impl_.mask_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
+    _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
+  }
+  return _impl_.mask_;
+}
+inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::mutable_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_mask();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.mask)
+  return _msg;
+}
+inline void CreateDocumentRequest::set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+
+  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.mask)
 }
 
 // -------------------------------------------------------------------
 
-// CreateDocumentRequest
+// UpdateDocumentRequest
 
-// string parent = 1;
-inline void CreateDocumentRequest::clear_parent() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.parent_.ClearToEmpty();
-}
-inline const std::string& CreateDocumentRequest::parent() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.parent)
-  return _internal_parent();
-}
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void CreateDocumentRequest::set_parent(Arg_&& arg,
-                                                     Args_... args) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.parent_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.CreateDocumentRequest.parent)
-}
-inline std::string* CreateDocumentRequest::mutable_parent() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_parent();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.parent)
-  return _s;
+// .google.firestore.v1.Document document = 1;
+inline bool UpdateDocumentRequest::has_document() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.document_ != nullptr);
+  return value;
 }
-inline const std::string& CreateDocumentRequest::_internal_parent() const {
+inline const ::google::firestore::v1::Document& UpdateDocumentRequest::_internal_document() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.parent_.Get();
+  const ::google::firestore::v1::Document* p = _impl_.document_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
 }
-inline void CreateDocumentRequest::_internal_set_parent(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.parent_.Set(value, GetArena());
+inline const ::google::firestore::v1::Document& UpdateDocumentRequest::document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.document)
+  return _internal_document();
 }
-inline std::string* CreateDocumentRequest::_internal_mutable_parent() {
+inline void UpdateDocumentRequest::unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.parent_.Mutable( GetArena());
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+  }
+  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.document)
 }
-inline std::string* CreateDocumentRequest::release_parent() {
+inline ::google::firestore::v1::Document* UpdateDocumentRequest::release_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.parent)
-  return _impl_.parent_.Release();
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Document* released = _impl_.document_;
+  _impl_.document_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
 }
-inline void CreateDocumentRequest::set_allocated_parent(std::string* value) {
+inline ::google::firestore::v1::Document* UpdateDocumentRequest::unsafe_arena_release_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.parent_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.parent_.IsDefault()) {
-          _impl_.parent_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.parent)
-}
+  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.document)
 
-// string collection_id = 2;
-inline void CreateDocumentRequest::clear_collection_id() {
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Document* temp = _impl_.document_;
+  _impl_.document_ = nullptr;
+  return temp;
+}
+inline ::google::firestore::v1::Document* UpdateDocumentRequest::_internal_mutable_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.collection_id_.ClearToEmpty();
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.document_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
+    _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(p);
+  }
+  return _impl_.document_;
 }
-inline const std::string& CreateDocumentRequest::collection_id() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.collection_id)
-  return _internal_collection_id();
+inline ::google::firestore::v1::Document* UpdateDocumentRequest::mutable_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Document* _msg = _internal_mutable_document();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.document)
+  return _msg;
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void CreateDocumentRequest::set_collection_id(Arg_&& arg,
-                                                     Args_... args) {
+inline void UpdateDocumentRequest::set_allocated_document(::google::firestore::v1::Document* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.collection_id_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.CreateDocumentRequest.collection_id)
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.document)
 }
-inline std::string* CreateDocumentRequest::mutable_collection_id() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_collection_id();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.collection_id)
-  return _s;
+
+// .google.firestore.v1.DocumentMask update_mask = 2;
+inline bool UpdateDocumentRequest::has_update_mask() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.update_mask_ != nullptr);
+  return value;
 }
-inline const std::string& CreateDocumentRequest::_internal_collection_id() const {
+inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::_internal_update_mask() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.collection_id_.Get();
+  const ::google::firestore::v1::DocumentMask* p = _impl_.update_mask_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
 }
-inline void CreateDocumentRequest::_internal_set_collection_id(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.collection_id_.Set(value, GetArena());
+inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::update_mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.update_mask)
+  return _internal_update_mask();
 }
-inline std::string* CreateDocumentRequest::_internal_mutable_collection_id() {
+inline void UpdateDocumentRequest::unsafe_arena_set_allocated_update_mask(::google::firestore::v1::DocumentMask* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.collection_id_.Mutable( GetArena());
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.update_mask_);
+  }
+  _impl_.update_mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.update_mask)
 }
-inline std::string* CreateDocumentRequest::release_collection_id() {
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::release_update_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.collection_id)
-  return _impl_.collection_id_.Release();
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::google::firestore::v1::DocumentMask* released = _impl_.update_mask_;
+  _impl_.update_mask_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
 }
-inline void CreateDocumentRequest::set_allocated_collection_id(std::string* value) {
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::unsafe_arena_release_update_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.collection_id_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.collection_id_.IsDefault()) {
-          _impl_.collection_id_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.collection_id)
-}
+  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.update_mask)
 
-// string document_id = 3;
-inline void CreateDocumentRequest::clear_document_id() {
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::google::firestore::v1::DocumentMask* temp = _impl_.update_mask_;
+  _impl_.update_mask_ = nullptr;
+  return temp;
+}
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::_internal_mutable_update_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.document_id_.ClearToEmpty();
+  _impl_._has_bits_[0] |= 0x00000002u;
+  if (_impl_.update_mask_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
+    _impl_.update_mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
+  }
+  return _impl_.update_mask_;
 }
-inline const std::string& CreateDocumentRequest::document_id() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.document_id)
-  return _internal_document_id();
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::mutable_update_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_update_mask();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.update_mask)
+  return _msg;
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void CreateDocumentRequest::set_document_id(Arg_&& arg,
-                                                     Args_... args) {
+inline void UpdateDocumentRequest::set_allocated_update_mask(::google::firestore::v1::DocumentMask* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.document_id_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.CreateDocumentRequest.document_id)
-}
-inline std::string* CreateDocumentRequest::mutable_document_id() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_document_id();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.document_id)
-  return _s;
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.update_mask_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+
+  _impl_.update_mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.update_mask)
 }
-inline const std::string& CreateDocumentRequest::_internal_document_id() const {
+
+// .google.firestore.v1.DocumentMask mask = 3;
+inline bool UpdateDocumentRequest::has_mask() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000004u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.mask_ != nullptr);
+  return value;
+}
+inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::_internal_mask() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.document_id_.Get();
+  const ::google::firestore::v1::DocumentMask* p = _impl_.mask_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
 }
-inline void CreateDocumentRequest::_internal_set_document_id(const std::string& value) {
+inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.mask)
+  return _internal_mask();
+}
+inline void UpdateDocumentRequest::unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.document_id_.Set(value, GetArena());
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+  }
+  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000004u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000004u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.mask)
 }
-inline std::string* CreateDocumentRequest::_internal_mutable_document_id() {
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::release_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.document_id_.Mutable( GetArena());
+
+  _impl_._has_bits_[0] &= ~0x00000004u;
+  ::google::firestore::v1::DocumentMask* released = _impl_.mask_;
+  _impl_.mask_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
 }
-inline std::string* CreateDocumentRequest::release_document_id() {
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::unsafe_arena_release_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.document_id)
-  return _impl_.document_id_.Release();
+  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.mask)
+
+  _impl_._has_bits_[0] &= ~0x00000004u;
+  ::google::firestore::v1::DocumentMask* temp = _impl_.mask_;
+  _impl_.mask_ = nullptr;
+  return temp;
 }
-inline void CreateDocumentRequest::set_allocated_document_id(std::string* value) {
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::_internal_mutable_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.document_id_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.document_id_.IsDefault()) {
-          _impl_.document_id_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.document_id)
+  _impl_._has_bits_[0] |= 0x00000004u;
+  if (_impl_.mask_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
+    _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
+  }
+  return _impl_.mask_;
+}
+inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::mutable_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_mask();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.mask)
+  return _msg;
 }
+inline void UpdateDocumentRequest::set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+  }
 
-// .google.firestore.v1.Document document = 4;
-inline bool CreateDocumentRequest::has_document() const {
-  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.document_ != nullptr);
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000004u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000004u;
+  }
+
+  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.mask)
+}
+
+// .google.firestore.v1.Precondition current_document = 4;
+inline bool UpdateDocumentRequest::has_current_document() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000008u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.current_document_ != nullptr);
   return value;
 }
-inline const ::google::firestore::v1::Document& CreateDocumentRequest::_internal_document() const {
+inline const ::google::firestore::v1::Precondition& UpdateDocumentRequest::_internal_current_document() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::Document* p = _impl_.document_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
+  const ::google::firestore::v1::Precondition* p = _impl_.current_document_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Precondition&>(::google::firestore::v1::_Precondition_default_instance_);
 }
-inline const ::google::firestore::v1::Document& CreateDocumentRequest::document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.document)
-  return _internal_document();
+inline const ::google::firestore::v1::Precondition& UpdateDocumentRequest::current_document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.current_document)
+  return _internal_current_document();
 }
-inline void CreateDocumentRequest::unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value) {
+inline void UpdateDocumentRequest::unsafe_arena_set_allocated_current_document(::google::firestore::v1::Precondition* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
   }
-  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
   if (value != nullptr) {
-    _impl_._has_bits_[0] |= 0x00000001u;
+    _impl_._has_bits_[0] |= 0x00000008u;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000001u;
+    _impl_._has_bits_[0] &= ~0x00000008u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.CreateDocumentRequest.document)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.current_document)
 }
-inline ::google::firestore::v1::Document* CreateDocumentRequest::release_document() {
+inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::release_current_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
-  _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Document* released = _impl_.document_;
-  _impl_.document_ = nullptr;
+  _impl_._has_bits_[0] &= ~0x00000008u;
+  ::google::firestore::v1::Precondition* released = _impl_.current_document_;
+  _impl_.current_document_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -7996,34 +8999,34 @@ inline ::google::firestore::v1::Document* CreateDocumentRequest::release_documen
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::firestore::v1::Document* CreateDocumentRequest::unsafe_arena_release_document() {
+inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::unsafe_arena_release_current_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.document)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.current_document)
 
-  _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Document* temp = _impl_.document_;
-  _impl_.document_ = nullptr;
+  _impl_._has_bits_[0] &= ~0x00000008u;
+  ::google::firestore::v1::Precondition* temp = _impl_.current_document_;
+  _impl_.current_document_ = nullptr;
   return temp;
 }
-inline ::google::firestore::v1::Document* CreateDocumentRequest::_internal_mutable_document() {
+inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::_internal_mutable_current_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.document_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
-    _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(p);
+  _impl_._has_bits_[0] |= 0x00000008u;
+  if (_impl_.current_document_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::Precondition>(GetArena());
+    _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(p);
   }
-  return _impl_.document_;
+  return _impl_.current_document_;
 }
-inline ::google::firestore::v1::Document* CreateDocumentRequest::mutable_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::Document* _msg = _internal_mutable_document();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.document)
+inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::mutable_current_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Precondition* _msg = _internal_mutable_current_document();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.current_document)
   return _msg;
 }
-inline void CreateDocumentRequest::set_allocated_document(::google::firestore::v1::Document* value) {
+inline void UpdateDocumentRequest::set_allocated_current_document(::google::firestore::v1::Precondition* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
   }
 
   if (value != nullptr) {
@@ -8031,49 +9034,106 @@ inline void CreateDocumentRequest::set_allocated_document(::google::firestore::v
     if (message_arena != submessage_arena) {
       value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
     }
-    _impl_._has_bits_[0] |= 0x00000001u;
+    _impl_._has_bits_[0] |= 0x00000008u;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000001u;
+    _impl_._has_bits_[0] &= ~0x00000008u;
   }
 
-  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.document)
+  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.current_document)
 }
 
-// .google.firestore.v1.DocumentMask mask = 5;
-inline bool CreateDocumentRequest::has_mask() const {
-  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.mask_ != nullptr);
-  return value;
+// -------------------------------------------------------------------
+
+// DeleteDocumentRequest
+
+// string name = 1;
+inline void DeleteDocumentRequest::clear_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.ClearToEmpty();
 }
-inline const ::google::firestore::v1::DocumentMask& CreateDocumentRequest::_internal_mask() const {
+inline const std::string& DeleteDocumentRequest::name() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.DeleteDocumentRequest.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void DeleteDocumentRequest::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.DeleteDocumentRequest.name)
+}
+inline std::string* DeleteDocumentRequest::mutable_name() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.DeleteDocumentRequest.name)
+  return _s;
+}
+inline const std::string& DeleteDocumentRequest::_internal_name() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::DocumentMask* p = _impl_.mask_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
+  return _impl_.name_.Get();
 }
-inline const ::google::firestore::v1::DocumentMask& CreateDocumentRequest::mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CreateDocumentRequest.mask)
-  return _internal_mask();
+inline void DeleteDocumentRequest::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArena());
+}
+inline std::string* DeleteDocumentRequest::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArena());
+}
+inline std::string* DeleteDocumentRequest::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.DeleteDocumentRequest.name)
+  return _impl_.name_.Release();
+}
+inline void DeleteDocumentRequest::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.DeleteDocumentRequest.name)
+}
+
+// .google.firestore.v1.Precondition current_document = 2;
+inline bool DeleteDocumentRequest::has_current_document() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.current_document_ != nullptr);
+  return value;
+}
+inline const ::google::firestore::v1::Precondition& DeleteDocumentRequest::_internal_current_document() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::google::firestore::v1::Precondition* p = _impl_.current_document_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Precondition&>(::google::firestore::v1::_Precondition_default_instance_);
 }
-inline void CreateDocumentRequest::unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
+inline const ::google::firestore::v1::Precondition& DeleteDocumentRequest::current_document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.DeleteDocumentRequest.current_document)
+  return _internal_current_document();
+}
+inline void DeleteDocumentRequest::unsafe_arena_set_allocated_current_document(::google::firestore::v1::Precondition* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
   }
-  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
   if (value != nullptr) {
-    _impl_._has_bits_[0] |= 0x00000002u;
+    _impl_._has_bits_[0] |= 0x00000001u;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000002u;
+    _impl_._has_bits_[0] &= ~0x00000001u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.CreateDocumentRequest.mask)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.DeleteDocumentRequest.current_document)
 }
-inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::release_mask() {
+inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::release_current_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
-  _impl_._has_bits_[0] &= ~0x00000002u;
-  ::google::firestore::v1::DocumentMask* released = _impl_.mask_;
-  _impl_.mask_ = nullptr;
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Precondition* released = _impl_.current_document_;
+  _impl_.current_document_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -8087,34 +9147,34 @@ inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::release_mas
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::unsafe_arena_release_mask() {
+inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::unsafe_arena_release_current_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CreateDocumentRequest.mask)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.DeleteDocumentRequest.current_document)
 
-  _impl_._has_bits_[0] &= ~0x00000002u;
-  ::google::firestore::v1::DocumentMask* temp = _impl_.mask_;
-  _impl_.mask_ = nullptr;
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Precondition* temp = _impl_.current_document_;
+  _impl_.current_document_ = nullptr;
   return temp;
 }
-inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::_internal_mutable_mask() {
+inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::_internal_mutable_current_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_._has_bits_[0] |= 0x00000002u;
-  if (_impl_.mask_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
-    _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.current_document_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::Precondition>(GetArena());
+    _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(p);
   }
-  return _impl_.mask_;
+  return _impl_.current_document_;
 }
-inline ::google::firestore::v1::DocumentMask* CreateDocumentRequest::mutable_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_mask();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CreateDocumentRequest.mask)
+inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::mutable_current_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Precondition* _msg = _internal_mutable_current_document();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.DeleteDocumentRequest.current_document)
   return _msg;
 }
-inline void CreateDocumentRequest::set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
+inline void DeleteDocumentRequest::set_allocated_current_document(::google::firestore::v1::Precondition* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
   }
 
   if (value != nullptr) {
@@ -8122,53 +9182,207 @@ inline void CreateDocumentRequest::set_allocated_mask(::google::firestore::v1::D
     if (message_arena != submessage_arena) {
       value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
     }
-    _impl_._has_bits_[0] |= 0x00000002u;
+    _impl_._has_bits_[0] |= 0x00000001u;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000002u;
+    _impl_._has_bits_[0] &= ~0x00000001u;
   }
 
-  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CreateDocumentRequest.mask)
+  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.DeleteDocumentRequest.current_document)
 }
 
 // -------------------------------------------------------------------
 
-// UpdateDocumentRequest
+// BatchGetDocumentsRequest
 
-// .google.firestore.v1.Document document = 1;
-inline bool UpdateDocumentRequest::has_document() const {
+// string database = 1;
+inline void BatchGetDocumentsRequest::clear_database() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.database_.ClearToEmpty();
+}
+inline const std::string& BatchGetDocumentsRequest::database() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.database)
+  return _internal_database();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsRequest::set_database(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.database)
+}
+inline std::string* BatchGetDocumentsRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_database();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.database)
+  return _s;
+}
+inline const std::string& BatchGetDocumentsRequest::_internal_database() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.database_.Get();
+}
+inline void BatchGetDocumentsRequest::_internal_set_database(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.database_.Set(value, GetArena());
+}
+inline std::string* BatchGetDocumentsRequest::_internal_mutable_database() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.database_.Mutable( GetArena());
+}
+inline std::string* BatchGetDocumentsRequest::release_database() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.database)
+  return _impl_.database_.Release();
+}
+inline void BatchGetDocumentsRequest::set_allocated_database(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.database_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.database_.IsDefault()) {
+          _impl_.database_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.database)
+}
+
+// repeated string documents = 2;
+inline int BatchGetDocumentsRequest::_internal_documents_size() const {
+  return _internal_documents().size();
+}
+inline int BatchGetDocumentsRequest::documents_size() const {
+  return _internal_documents_size();
+}
+inline void BatchGetDocumentsRequest::clear_documents() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.documents_.Clear();
+}
+inline std::string* BatchGetDocumentsRequest::add_documents()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  std::string* _s = _internal_mutable_documents()->Add();
+  // @@protoc_insertion_point(field_add_mutable:google.firestore.v1.BatchGetDocumentsRequest.documents)
+  return _s;
+}
+inline const std::string& BatchGetDocumentsRequest::documents(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.documents)
+  return _internal_documents().Get(index);
+}
+inline std::string* BatchGetDocumentsRequest::mutable_documents(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.documents)
+  return _internal_mutable_documents()->Mutable(index);
+}
+inline void BatchGetDocumentsRequest::set_documents(int index, const std::string& value) {
+  _internal_mutable_documents()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::set_documents(int index, std::string&& value) {
+  _internal_mutable_documents()->Mutable(index)->assign(std::move(value));
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::set_documents(int index, const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  _internal_mutable_documents()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set_char:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::set_documents(int index, const char* value,
+                              std::size_t size) {
+  _internal_mutable_documents()->Mutable(index)->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::set_documents(int index, absl::string_view value) {
+  _internal_mutable_documents()->Mutable(index)->assign(value.data(),
+                                                     value.size());
+  // @@protoc_insertion_point(field_set_string_piece:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::add_documents(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_documents()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::add_documents(std::string&& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_documents()->Add(std::move(value));
+  // @@protoc_insertion_point(field_add:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::add_documents(const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_documents()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add_char:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::add_documents(const char* value, std::size_t size) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_documents()->Add()->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_add_pointer:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline void BatchGetDocumentsRequest::add_documents(absl::string_view value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_documents()->Add()->assign(value.data(), value.size());
+  // @@protoc_insertion_point(field_add_string_piece:google.firestore.v1.BatchGetDocumentsRequest.documents)
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+BatchGetDocumentsRequest::documents() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.BatchGetDocumentsRequest.documents)
+  return _internal_documents();
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>*
+BatchGetDocumentsRequest::mutable_documents() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.BatchGetDocumentsRequest.documents)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_documents();
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+BatchGetDocumentsRequest::_internal_documents() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.documents_;
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>*
+BatchGetDocumentsRequest::_internal_mutable_documents() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.documents_;
+}
+
+// .google.firestore.v1.DocumentMask mask = 3;
+inline bool BatchGetDocumentsRequest::has_mask() const {
   bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.document_ != nullptr);
+  PROTOBUF_ASSUME(!value || _impl_.mask_ != nullptr);
   return value;
 }
-inline const ::google::firestore::v1::Document& UpdateDocumentRequest::_internal_document() const {
+inline const ::google::firestore::v1::DocumentMask& BatchGetDocumentsRequest::_internal_mask() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::Document* p = _impl_.document_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
+  const ::google::firestore::v1::DocumentMask* p = _impl_.mask_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
 }
-inline const ::google::firestore::v1::Document& UpdateDocumentRequest::document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.document)
-  return _internal_document();
+inline const ::google::firestore::v1::DocumentMask& BatchGetDocumentsRequest::mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.mask)
+  return _internal_mask();
 }
-inline void UpdateDocumentRequest::unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value) {
+inline void BatchGetDocumentsRequest::unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
   }
-  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
   if (value != nullptr) {
     _impl_._has_bits_[0] |= 0x00000001u;
   } else {
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.document)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.mask)
 }
-inline ::google::firestore::v1::Document* UpdateDocumentRequest::release_document() {
+inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::release_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Document* released = _impl_.document_;
-  _impl_.document_ = nullptr;
+  ::google::firestore::v1::DocumentMask* released = _impl_.mask_;
+  _impl_.mask_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -8182,34 +9396,34 @@ inline ::google::firestore::v1::Document* UpdateDocumentRequest::release_documen
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::firestore::v1::Document* UpdateDocumentRequest::unsafe_arena_release_document() {
+inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::unsafe_arena_release_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.document)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.mask)
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Document* temp = _impl_.document_;
-  _impl_.document_ = nullptr;
+  ::google::firestore::v1::DocumentMask* temp = _impl_.mask_;
+  _impl_.mask_ = nullptr;
   return temp;
 }
-inline ::google::firestore::v1::Document* UpdateDocumentRequest::_internal_mutable_document() {
+inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::_internal_mutable_mask() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.document_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
-    _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(p);
+  if (_impl_.mask_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
+    _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
   }
-  return _impl_.document_;
+  return _impl_.mask_;
 }
-inline ::google::firestore::v1::Document* UpdateDocumentRequest::mutable_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::Document* _msg = _internal_mutable_document();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.document)
+inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::mutable_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_mask();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.mask)
   return _msg;
 }
-inline void UpdateDocumentRequest::set_allocated_document(::google::firestore::v1::Document* value) {
+inline void BatchGetDocumentsRequest::set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
   }
 
   if (value != nullptr) {
@@ -8222,374 +9436,481 @@ inline void UpdateDocumentRequest::set_allocated_document(::google::firestore::v
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
 
-  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.document)
+  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.mask)
 }
 
-// .google.firestore.v1.DocumentMask update_mask = 2;
-inline bool UpdateDocumentRequest::has_update_mask() const {
-  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.update_mask_ != nullptr);
-  return value;
+// bytes transaction = 4;
+inline bool BatchGetDocumentsRequest::has_transaction() const {
+  return consistency_selector_case() == kTransaction;
 }
-inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::_internal_update_mask() const {
+inline void BatchGetDocumentsRequest::set_has_transaction() {
+  _impl_._oneof_case_[0] = kTransaction;
+}
+inline void BatchGetDocumentsRequest::clear_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (consistency_selector_case() == kTransaction) {
+    _impl_.consistency_selector_.transaction_.Destroy();
+    clear_has_consistency_selector();
+  }
+}
+inline const std::string& BatchGetDocumentsRequest::transaction() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+  return _internal_transaction();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsRequest::set_transaction(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (consistency_selector_case() != kTransaction) {
+    clear_consistency_selector();
+
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitDefault();
+  }
+  _impl_.consistency_selector_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+}
+inline std::string* BatchGetDocumentsRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_transaction();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+  return _s;
+}
+inline const std::string& BatchGetDocumentsRequest::_internal_transaction() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::DocumentMask* p = _impl_.update_mask_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
+  if (consistency_selector_case() != kTransaction) {
+    return ::google::protobuf::internal::GetEmptyStringAlreadyInited();
+  }
+  return _impl_.consistency_selector_.transaction_.Get();
 }
-inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::update_mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.update_mask)
-  return _internal_update_mask();
+inline void BatchGetDocumentsRequest::_internal_set_transaction(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (consistency_selector_case() != kTransaction) {
+    clear_consistency_selector();
+
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitDefault();
+  }
+  _impl_.consistency_selector_.transaction_.Set(value, GetArena());
 }
-inline void UpdateDocumentRequest::unsafe_arena_set_allocated_update_mask(::google::firestore::v1::DocumentMask* value) {
+inline std::string* BatchGetDocumentsRequest::_internal_mutable_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.update_mask_);
+  if (consistency_selector_case() != kTransaction) {
+    clear_consistency_selector();
+
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitDefault();
+  }
+  return _impl_.consistency_selector_.transaction_.Mutable( GetArena());
+}
+inline std::string* BatchGetDocumentsRequest::release_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+  if (consistency_selector_case() != kTransaction) {
+    return nullptr;
+  }
+  clear_has_consistency_selector();
+  return _impl_.consistency_selector_.transaction_.Release();
+}
+inline void BatchGetDocumentsRequest::set_allocated_transaction(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (has_consistency_selector()) {
+    clear_consistency_selector();
   }
-  _impl_.update_mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
   if (value != nullptr) {
-    _impl_._has_bits_[0] |= 0x00000002u;
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitAllocated(value, GetArena());
+  }
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+}
+
+// .google.firestore.v1.TransactionOptions new_transaction = 5;
+inline bool BatchGetDocumentsRequest::has_new_transaction() const {
+  return consistency_selector_case() == kNewTransaction;
+}
+inline bool BatchGetDocumentsRequest::_internal_has_new_transaction() const {
+  return consistency_selector_case() == kNewTransaction;
+}
+inline void BatchGetDocumentsRequest::set_has_new_transaction() {
+  _impl_._oneof_case_[0] = kNewTransaction;
+}
+inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::release_new_transaction() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
+  if (consistency_selector_case() == kNewTransaction) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.new_transaction_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.consistency_selector_.new_transaction_ = nullptr;
+    return temp;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000002u;
+    return nullptr;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.update_mask)
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::release_update_mask() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+inline const ::google::firestore::v1::TransactionOptions& BatchGetDocumentsRequest::_internal_new_transaction() const {
+  return consistency_selector_case() == kNewTransaction ? *_impl_.consistency_selector_.new_transaction_ : reinterpret_cast<::google::firestore::v1::TransactionOptions&>(::google::firestore::v1::_TransactionOptions_default_instance_);
+}
+inline const ::google::firestore::v1::TransactionOptions& BatchGetDocumentsRequest::new_transaction() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
+  return _internal_new_transaction();
+}
+inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::unsafe_arena_release_new_transaction() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
+  if (consistency_selector_case() == kNewTransaction) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.new_transaction_;
+    _impl_.consistency_selector_.new_transaction_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline void BatchGetDocumentsRequest::unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_consistency_selector();
+  if (value) {
+    set_has_new_transaction();
+    _impl_.consistency_selector_.new_transaction_ = value;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
+}
+inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::_internal_mutable_new_transaction() {
+  if (consistency_selector_case() != kNewTransaction) {
+    clear_consistency_selector();
+    set_has_new_transaction();
+    _impl_.consistency_selector_.new_transaction_ = CreateMaybeMessage<::google::firestore::v1::TransactionOptions>(GetArena());
+  }
+  return _impl_.consistency_selector_.new_transaction_;
+}
+inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::mutable_new_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::TransactionOptions* _msg = _internal_mutable_new_transaction();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
+  return _msg;
+}
 
-  _impl_._has_bits_[0] &= ~0x00000002u;
-  ::google::firestore::v1::DocumentMask* released = _impl_.update_mask_;
-  _impl_.update_mask_ = nullptr;
-#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
-  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
-  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
-  if (GetArena() == nullptr) {
-    delete old;
+// .google.protobuf.Timestamp read_time = 7;
+inline bool BatchGetDocumentsRequest::has_read_time() const {
+  return consistency_selector_case() == kReadTime;
+}
+inline bool BatchGetDocumentsRequest::_internal_has_read_time() const {
+  return consistency_selector_case() == kReadTime;
+}
+inline void BatchGetDocumentsRequest::set_has_read_time() {
+  _impl_._oneof_case_[0] = kReadTime;
+}
+inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::release_read_time() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.read_time)
+  if (consistency_selector_case() == kReadTime) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.read_time_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.consistency_selector_.read_time_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
   }
-#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
-  if (GetArena() != nullptr) {
-    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+}
+inline const ::google::protobuf::Timestamp& BatchGetDocumentsRequest::_internal_read_time() const {
+  return consistency_selector_case() == kReadTime ? *_impl_.consistency_selector_.read_time_ : reinterpret_cast<::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
+}
+inline const ::google::protobuf::Timestamp& BatchGetDocumentsRequest::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.read_time)
+  return _internal_read_time();
+}
+inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::unsafe_arena_release_read_time() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.BatchGetDocumentsRequest.read_time)
+  if (consistency_selector_case() == kReadTime) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.read_time_;
+    _impl_.consistency_selector_.read_time_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline void BatchGetDocumentsRequest::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_consistency_selector();
+  if (value) {
+    set_has_read_time();
+    _impl_.consistency_selector_.read_time_ = value;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.read_time)
+}
+inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::_internal_mutable_read_time() {
+  if (consistency_selector_case() != kReadTime) {
+    clear_consistency_selector();
+    set_has_read_time();
+    _impl_.consistency_selector_.read_time_ = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
   }
-#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
-  return released;
+  return _impl_.consistency_selector_.read_time_;
+}
+inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.read_time)
+  return _msg;
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::unsafe_arena_release_update_mask() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.update_mask)
 
-  _impl_._has_bits_[0] &= ~0x00000002u;
-  ::google::firestore::v1::DocumentMask* temp = _impl_.update_mask_;
-  _impl_.update_mask_ = nullptr;
-  return temp;
+inline bool BatchGetDocumentsRequest::has_consistency_selector() const {
+  return consistency_selector_case() != CONSISTENCY_SELECTOR_NOT_SET;
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::_internal_mutable_update_mask() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_._has_bits_[0] |= 0x00000002u;
-  if (_impl_.update_mask_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
-    _impl_.update_mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
-  }
-  return _impl_.update_mask_;
+inline void BatchGetDocumentsRequest::clear_has_consistency_selector() {
+  _impl_._oneof_case_[0] = CONSISTENCY_SELECTOR_NOT_SET;
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::mutable_update_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_update_mask();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.update_mask)
-  return _msg;
+inline BatchGetDocumentsRequest::ConsistencySelectorCase BatchGetDocumentsRequest::consistency_selector_case() const {
+  return BatchGetDocumentsRequest::ConsistencySelectorCase(_impl_._oneof_case_[0]);
 }
-inline void UpdateDocumentRequest::set_allocated_update_mask(::google::firestore::v1::DocumentMask* value) {
-  ::google::protobuf::Arena* message_arena = GetArena();
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.update_mask_);
-  }
+// -------------------------------------------------------------------
 
-  if (value != nullptr) {
-    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
-    if (message_arena != submessage_arena) {
-      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+// BatchGetDocumentsResponse
+
+// .google.firestore.v1.Document found = 1;
+inline bool BatchGetDocumentsResponse::has_found() const {
+  return result_case() == kFound;
+}
+inline bool BatchGetDocumentsResponse::_internal_has_found() const {
+  return result_case() == kFound;
+}
+inline void BatchGetDocumentsResponse::set_has_found() {
+  _impl_._oneof_case_[0] = kFound;
+}
+inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::release_found() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.found)
+  if (result_case() == kFound) {
+    clear_has_result();
+    auto* temp = _impl_.result_.found_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
     }
-    _impl_._has_bits_[0] |= 0x00000002u;
+    _impl_.result_.found_ = nullptr;
+    return temp;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000002u;
+    return nullptr;
   }
-
-  _impl_.update_mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.update_mask)
 }
-
-// .google.firestore.v1.DocumentMask mask = 3;
-inline bool UpdateDocumentRequest::has_mask() const {
-  bool value = (_impl_._has_bits_[0] & 0x00000004u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.mask_ != nullptr);
-  return value;
-}
-inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::_internal_mask() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::DocumentMask* p = _impl_.mask_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
+inline const ::google::firestore::v1::Document& BatchGetDocumentsResponse::_internal_found() const {
+  return result_case() == kFound ? *_impl_.result_.found_ : reinterpret_cast<::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
 }
-inline const ::google::firestore::v1::DocumentMask& UpdateDocumentRequest::mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.mask)
-  return _internal_mask();
+inline const ::google::firestore::v1::Document& BatchGetDocumentsResponse::found() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.found)
+  return _internal_found();
 }
-inline void UpdateDocumentRequest::unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
-  }
-  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
-  if (value != nullptr) {
-    _impl_._has_bits_[0] |= 0x00000004u;
+inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::unsafe_arena_release_found() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.BatchGetDocumentsResponse.found)
+  if (result_case() == kFound) {
+    clear_has_result();
+    auto* temp = _impl_.result_.found_;
+    _impl_.result_.found_ = nullptr;
+    return temp;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000004u;
+    return nullptr;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.mask)
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::release_mask() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-
-  _impl_._has_bits_[0] &= ~0x00000004u;
-  ::google::firestore::v1::DocumentMask* released = _impl_.mask_;
-  _impl_.mask_ = nullptr;
-#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
-  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
-  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
-  if (GetArena() == nullptr) {
-    delete old;
+inline void BatchGetDocumentsResponse::unsafe_arena_set_allocated_found(::google::firestore::v1::Document* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_result();
+  if (value) {
+    set_has_found();
+    _impl_.result_.found_ = value;
   }
-#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
-  if (GetArena() != nullptr) {
-    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.found)
+}
+inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::_internal_mutable_found() {
+  if (result_case() != kFound) {
+    clear_result();
+    set_has_found();
+    _impl_.result_.found_ = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
   }
-#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
-  return released;
+  return _impl_.result_.found_;
+}
+inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::mutable_found() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Document* _msg = _internal_mutable_found();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.found)
+  return _msg;
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::unsafe_arena_release_mask() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.mask)
 
-  _impl_._has_bits_[0] &= ~0x00000004u;
-  ::google::firestore::v1::DocumentMask* temp = _impl_.mask_;
-  _impl_.mask_ = nullptr;
-  return temp;
+// string missing = 2;
+inline bool BatchGetDocumentsResponse::has_missing() const {
+  return result_case() == kMissing;
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::_internal_mutable_mask() {
+inline void BatchGetDocumentsResponse::set_has_missing() {
+  _impl_._oneof_case_[0] = kMissing;
+}
+inline void BatchGetDocumentsResponse::clear_missing() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_._has_bits_[0] |= 0x00000004u;
-  if (_impl_.mask_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
-    _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
+  if (result_case() == kMissing) {
+    _impl_.result_.missing_.Destroy();
+    clear_has_result();
   }
-  return _impl_.mask_;
 }
-inline ::google::firestore::v1::DocumentMask* UpdateDocumentRequest::mutable_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_mask();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.mask)
-  return _msg;
+inline const std::string& BatchGetDocumentsResponse::missing() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.missing)
+  return _internal_missing();
 }
-inline void UpdateDocumentRequest::set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
-  ::google::protobuf::Arena* message_arena = GetArena();
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsResponse::set_missing(Arg_&& arg,
+                                                     Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
-  }
+  if (result_case() != kMissing) {
+    clear_result();
 
-  if (value != nullptr) {
-    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
-    if (message_arena != submessage_arena) {
-      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
-    }
-    _impl_._has_bits_[0] |= 0x00000004u;
-  } else {
-    _impl_._has_bits_[0] &= ~0x00000004u;
+    set_has_missing();
+    _impl_.result_.missing_.InitDefault();
   }
-
-  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.mask)
+  _impl_.result_.missing_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsResponse.missing)
 }
-
-// .google.firestore.v1.Precondition current_document = 4;
-inline bool UpdateDocumentRequest::has_current_document() const {
-  bool value = (_impl_._has_bits_[0] & 0x00000008u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.current_document_ != nullptr);
-  return value;
+inline std::string* BatchGetDocumentsResponse::mutable_missing() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_missing();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.missing)
+  return _s;
 }
-inline const ::google::firestore::v1::Precondition& UpdateDocumentRequest::_internal_current_document() const {
+inline const std::string& BatchGetDocumentsResponse::_internal_missing() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::Precondition* p = _impl_.current_document_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Precondition&>(::google::firestore::v1::_Precondition_default_instance_);
-}
-inline const ::google::firestore::v1::Precondition& UpdateDocumentRequest::current_document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.UpdateDocumentRequest.current_document)
-  return _internal_current_document();
-}
-inline void UpdateDocumentRequest::unsafe_arena_set_allocated_current_document(::google::firestore::v1::Precondition* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
-  }
-  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
-  if (value != nullptr) {
-    _impl_._has_bits_[0] |= 0x00000008u;
-  } else {
-    _impl_._has_bits_[0] &= ~0x00000008u;
+  if (result_case() != kMissing) {
+    return ::google::protobuf::internal::GetEmptyStringAlreadyInited();
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.UpdateDocumentRequest.current_document)
+  return _impl_.result_.missing_.Get();
 }
-inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::release_current_document() {
+inline void BatchGetDocumentsResponse::_internal_set_missing(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (result_case() != kMissing) {
+    clear_result();
 
-  _impl_._has_bits_[0] &= ~0x00000008u;
-  ::google::firestore::v1::Precondition* released = _impl_.current_document_;
-  _impl_.current_document_ = nullptr;
-#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
-  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
-  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
-  if (GetArena() == nullptr) {
-    delete old;
-  }
-#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
-  if (GetArena() != nullptr) {
-    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+    set_has_missing();
+    _impl_.result_.missing_.InitDefault();
   }
-#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
-  return released;
+  _impl_.result_.missing_.Set(value, GetArena());
 }
-inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::unsafe_arena_release_current_document() {
+inline std::string* BatchGetDocumentsResponse::_internal_mutable_missing() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.UpdateDocumentRequest.current_document)
+  if (result_case() != kMissing) {
+    clear_result();
 
-  _impl_._has_bits_[0] &= ~0x00000008u;
-  ::google::firestore::v1::Precondition* temp = _impl_.current_document_;
-  _impl_.current_document_ = nullptr;
-  return temp;
+    set_has_missing();
+    _impl_.result_.missing_.InitDefault();
+  }
+  return _impl_.result_.missing_.Mutable( GetArena());
 }
-inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::_internal_mutable_current_document() {
+inline std::string* BatchGetDocumentsResponse::release_missing() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_._has_bits_[0] |= 0x00000008u;
-  if (_impl_.current_document_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::Precondition>(GetArena());
-    _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(p);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.missing)
+  if (result_case() != kMissing) {
+    return nullptr;
   }
-  return _impl_.current_document_;
-}
-inline ::google::firestore::v1::Precondition* UpdateDocumentRequest::mutable_current_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::Precondition* _msg = _internal_mutable_current_document();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.UpdateDocumentRequest.current_document)
-  return _msg;
+  clear_has_result();
+  return _impl_.result_.missing_.Release();
 }
-inline void UpdateDocumentRequest::set_allocated_current_document(::google::firestore::v1::Precondition* value) {
-  ::google::protobuf::Arena* message_arena = GetArena();
+inline void BatchGetDocumentsResponse::set_allocated_missing(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
+  if (has_result()) {
+    clear_result();
   }
-
   if (value != nullptr) {
-    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
-    if (message_arena != submessage_arena) {
-      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
-    }
-    _impl_._has_bits_[0] |= 0x00000008u;
-  } else {
-    _impl_._has_bits_[0] &= ~0x00000008u;
+    set_has_missing();
+    _impl_.result_.missing_.InitAllocated(value, GetArena());
   }
-
-  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.UpdateDocumentRequest.current_document)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.missing)
 }
 
-// -------------------------------------------------------------------
-
-// DeleteDocumentRequest
-
-// string name = 1;
-inline void DeleteDocumentRequest::clear_name() {
+// bytes transaction = 3;
+inline void BatchGetDocumentsResponse::clear_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.name_.ClearToEmpty();
+  _impl_.transaction_.ClearToEmpty();
 }
-inline const std::string& DeleteDocumentRequest::name() const
+inline const std::string& BatchGetDocumentsResponse::transaction() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.DeleteDocumentRequest.name)
-  return _internal_name();
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.transaction)
+  return _internal_transaction();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void DeleteDocumentRequest::set_name(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsResponse::set_transaction(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.DeleteDocumentRequest.name)
+  _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsResponse.transaction)
 }
-inline std::string* DeleteDocumentRequest::mutable_name() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_name();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.DeleteDocumentRequest.name)
+inline std::string* BatchGetDocumentsResponse::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_transaction();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.transaction)
   return _s;
 }
-inline const std::string& DeleteDocumentRequest::_internal_name() const {
+inline const std::string& BatchGetDocumentsResponse::_internal_transaction() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.name_.Get();
+  return _impl_.transaction_.Get();
 }
-inline void DeleteDocumentRequest::_internal_set_name(const std::string& value) {
+inline void BatchGetDocumentsResponse::_internal_set_transaction(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  _impl_.name_.Set(value, GetArena());
+  _impl_.transaction_.Set(value, GetArena());
 }
-inline std::string* DeleteDocumentRequest::_internal_mutable_name() {
+inline std::string* BatchGetDocumentsResponse::_internal_mutable_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  return _impl_.name_.Mutable( GetArena());
+  return _impl_.transaction_.Mutable( GetArena());
 }
-inline std::string* DeleteDocumentRequest::release_name() {
+inline std::string* BatchGetDocumentsResponse::release_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.DeleteDocumentRequest.name)
-  return _impl_.name_.Release();
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.transaction)
+  return _impl_.transaction_.Release();
 }
-inline void DeleteDocumentRequest::set_allocated_name(std::string* value) {
+inline void BatchGetDocumentsResponse::set_allocated_transaction(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.name_.SetAllocated(value, GetArena());
+  _impl_.transaction_.SetAllocated(value, GetArena());
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.name_.IsDefault()) {
-          _impl_.name_.Set("", GetArena());
+        if (_impl_.transaction_.IsDefault()) {
+          _impl_.transaction_.Set("", GetArena());
         }
   #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.DeleteDocumentRequest.name)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.transaction)
 }
 
-// .google.firestore.v1.Precondition current_document = 2;
-inline bool DeleteDocumentRequest::has_current_document() const {
+// .google.protobuf.Timestamp read_time = 4;
+inline bool BatchGetDocumentsResponse::has_read_time() const {
   bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.current_document_ != nullptr);
+  PROTOBUF_ASSUME(!value || _impl_.read_time_ != nullptr);
   return value;
 }
-inline const ::google::firestore::v1::Precondition& DeleteDocumentRequest::_internal_current_document() const {
+inline const ::google::protobuf::Timestamp& BatchGetDocumentsResponse::_internal_read_time() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::Precondition* p = _impl_.current_document_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Precondition&>(::google::firestore::v1::_Precondition_default_instance_);
+  const ::google::protobuf::Timestamp* p = _impl_.read_time_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
 }
-inline const ::google::firestore::v1::Precondition& DeleteDocumentRequest::current_document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.DeleteDocumentRequest.current_document)
-  return _internal_current_document();
+inline const ::google::protobuf::Timestamp& BatchGetDocumentsResponse::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.read_time)
+  return _internal_read_time();
 }
-inline void DeleteDocumentRequest::unsafe_arena_set_allocated_current_document(::google::firestore::v1::Precondition* value) {
+inline void BatchGetDocumentsResponse::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
   }
-  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
+  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
   if (value != nullptr) {
     _impl_._has_bits_[0] |= 0x00000001u;
   } else {
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.DeleteDocumentRequest.current_document)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.read_time)
 }
-inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::release_current_document() {
+inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::release_read_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Precondition* released = _impl_.current_document_;
-  _impl_.current_document_ = nullptr;
+  ::google::protobuf::Timestamp* released = _impl_.read_time_;
+  _impl_.read_time_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -8603,34 +9924,34 @@ inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::release_cur
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::unsafe_arena_release_current_document() {
+inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::unsafe_arena_release_read_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.DeleteDocumentRequest.current_document)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.read_time)
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Precondition* temp = _impl_.current_document_;
-  _impl_.current_document_ = nullptr;
+  ::google::protobuf::Timestamp* temp = _impl_.read_time_;
+  _impl_.read_time_ = nullptr;
   return temp;
 }
-inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::_internal_mutable_current_document() {
+inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::_internal_mutable_read_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.current_document_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::Precondition>(GetArena());
-    _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(p);
+  if (_impl_.read_time_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
+    _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(p);
   }
-  return _impl_.current_document_;
+  return _impl_.read_time_;
 }
-inline ::google::firestore::v1::Precondition* DeleteDocumentRequest::mutable_current_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::Precondition* _msg = _internal_mutable_current_document();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.DeleteDocumentRequest.current_document)
+inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.read_time)
   return _msg;
 }
-inline void DeleteDocumentRequest::set_allocated_current_document(::google::firestore::v1::Precondition* value) {
+inline void BatchGetDocumentsResponse::set_allocated_read_time(::google::protobuf::Timestamp* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.current_document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
   }
 
   if (value != nullptr) {
@@ -8642,203 +9963,111 @@ inline void DeleteDocumentRequest::set_allocated_current_document(::google::fire
   } else {
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
-
-  _impl_.current_document_ = reinterpret_cast<::google::firestore::v1::Precondition*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.DeleteDocumentRequest.current_document)
-}
-
-// -------------------------------------------------------------------
-
-// BatchGetDocumentsRequest
-
-// string database = 1;
-inline void BatchGetDocumentsRequest::clear_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.ClearToEmpty();
-}
-inline const std::string& BatchGetDocumentsRequest::database() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.database)
-  return _internal_database();
-}
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsRequest::set_database(Arg_&& arg,
-                                                     Args_... args) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.database)
-}
-inline std::string* BatchGetDocumentsRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_database();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.database)
-  return _s;
-}
-inline const std::string& BatchGetDocumentsRequest::_internal_database() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.database_.Get();
-}
-inline void BatchGetDocumentsRequest::_internal_set_database(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(value, GetArena());
-}
-inline std::string* BatchGetDocumentsRequest::_internal_mutable_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.database_.Mutable( GetArena());
-}
-inline std::string* BatchGetDocumentsRequest::release_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.database)
-  return _impl_.database_.Release();
-}
-inline void BatchGetDocumentsRequest::set_allocated_database(std::string* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.database_.IsDefault()) {
-          _impl_.database_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.database)
-}
-
-// repeated string documents = 2;
-inline int BatchGetDocumentsRequest::_internal_documents_size() const {
-  return _internal_documents().size();
-}
-inline int BatchGetDocumentsRequest::documents_size() const {
-  return _internal_documents_size();
-}
-inline void BatchGetDocumentsRequest::clear_documents() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.documents_.Clear();
-}
-inline std::string* BatchGetDocumentsRequest::add_documents()
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  std::string* _s = _internal_mutable_documents()->Add();
-  // @@protoc_insertion_point(field_add_mutable:google.firestore.v1.BatchGetDocumentsRequest.documents)
-  return _s;
-}
-inline const std::string& BatchGetDocumentsRequest::documents(int index) const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.documents)
-  return _internal_documents().Get(index);
-}
-inline std::string* BatchGetDocumentsRequest::mutable_documents(int index)
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.documents)
-  return _internal_mutable_documents()->Mutable(index);
+
+  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.read_time)
 }
-inline void BatchGetDocumentsRequest::set_documents(int index, const std::string& value) {
-  _internal_mutable_documents()->Mutable(index)->assign(value);
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.documents)
+
+inline bool BatchGetDocumentsResponse::has_result() const {
+  return result_case() != RESULT_NOT_SET;
 }
-inline void BatchGetDocumentsRequest::set_documents(int index, std::string&& value) {
-  _internal_mutable_documents()->Mutable(index)->assign(std::move(value));
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.documents)
+inline void BatchGetDocumentsResponse::clear_has_result() {
+  _impl_._oneof_case_[0] = RESULT_NOT_SET;
 }
-inline void BatchGetDocumentsRequest::set_documents(int index, const char* value) {
-  ABSL_DCHECK(value != nullptr);
-  _internal_mutable_documents()->Mutable(index)->assign(value);
-  // @@protoc_insertion_point(field_set_char:google.firestore.v1.BatchGetDocumentsRequest.documents)
+inline BatchGetDocumentsResponse::ResultCase BatchGetDocumentsResponse::result_case() const {
+  return BatchGetDocumentsResponse::ResultCase(_impl_._oneof_case_[0]);
 }
-inline void BatchGetDocumentsRequest::set_documents(int index, const char* value,
-                              std::size_t size) {
-  _internal_mutable_documents()->Mutable(index)->assign(
-      reinterpret_cast<const char*>(value), size);
-  // @@protoc_insertion_point(field_set_pointer:google.firestore.v1.BatchGetDocumentsRequest.documents)
+// -------------------------------------------------------------------
+
+// BeginTransactionRequest
+
+// string database = 1;
+inline void BeginTransactionRequest::clear_database() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.database_.ClearToEmpty();
 }
-inline void BatchGetDocumentsRequest::set_documents(int index, absl::string_view value) {
-  _internal_mutable_documents()->Mutable(index)->assign(value.data(),
-                                                     value.size());
-  // @@protoc_insertion_point(field_set_string_piece:google.firestore.v1.BatchGetDocumentsRequest.documents)
+inline const std::string& BeginTransactionRequest::database() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BeginTransactionRequest.database)
+  return _internal_database();
 }
-inline void BatchGetDocumentsRequest::add_documents(const std::string& value) {
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void BeginTransactionRequest::set_database(Arg_&& arg,
+                                                     Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _internal_mutable_documents()->Add()->assign(value);
-  // @@protoc_insertion_point(field_add:google.firestore.v1.BatchGetDocumentsRequest.documents)
+  ;
+  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BeginTransactionRequest.database)
 }
-inline void BatchGetDocumentsRequest::add_documents(std::string&& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _internal_mutable_documents()->Add(std::move(value));
-  // @@protoc_insertion_point(field_add:google.firestore.v1.BatchGetDocumentsRequest.documents)
+inline std::string* BeginTransactionRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_database();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BeginTransactionRequest.database)
+  return _s;
 }
-inline void BatchGetDocumentsRequest::add_documents(const char* value) {
-  ABSL_DCHECK(value != nullptr);
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _internal_mutable_documents()->Add()->assign(value);
-  // @@protoc_insertion_point(field_add_char:google.firestore.v1.BatchGetDocumentsRequest.documents)
+inline const std::string& BeginTransactionRequest::_internal_database() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.database_.Get();
 }
-inline void BatchGetDocumentsRequest::add_documents(const char* value, std::size_t size) {
+inline void BeginTransactionRequest::_internal_set_database(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _internal_mutable_documents()->Add()->assign(
-      reinterpret_cast<const char*>(value), size);
-  // @@protoc_insertion_point(field_add_pointer:google.firestore.v1.BatchGetDocumentsRequest.documents)
+  ;
+  _impl_.database_.Set(value, GetArena());
 }
-inline void BatchGetDocumentsRequest::add_documents(absl::string_view value) {
+inline std::string* BeginTransactionRequest::_internal_mutable_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _internal_mutable_documents()->Add()->assign(value.data(), value.size());
-  // @@protoc_insertion_point(field_add_string_piece:google.firestore.v1.BatchGetDocumentsRequest.documents)
-}
-inline const ::google::protobuf::RepeatedPtrField<std::string>&
-BatchGetDocumentsRequest::documents() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_list:google.firestore.v1.BatchGetDocumentsRequest.documents)
-  return _internal_documents();
+  ;
+  return _impl_.database_.Mutable( GetArena());
 }
-inline ::google::protobuf::RepeatedPtrField<std::string>*
-BatchGetDocumentsRequest::mutable_documents() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.BatchGetDocumentsRequest.documents)
+inline std::string* BeginTransactionRequest::release_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  return _internal_mutable_documents();
-}
-inline const ::google::protobuf::RepeatedPtrField<std::string>&
-BatchGetDocumentsRequest::_internal_documents() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.documents_;
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BeginTransactionRequest.database)
+  return _impl_.database_.Release();
 }
-inline ::google::protobuf::RepeatedPtrField<std::string>*
-BatchGetDocumentsRequest::_internal_mutable_documents() {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return &_impl_.documents_;
+inline void BeginTransactionRequest::set_allocated_database(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.database_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.database_.IsDefault()) {
+          _impl_.database_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BeginTransactionRequest.database)
 }
 
-// .google.firestore.v1.DocumentMask mask = 3;
-inline bool BatchGetDocumentsRequest::has_mask() const {
+// .google.firestore.v1.TransactionOptions options = 2;
+inline bool BeginTransactionRequest::has_options() const {
   bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.mask_ != nullptr);
+  PROTOBUF_ASSUME(!value || _impl_.options_ != nullptr);
   return value;
 }
-inline const ::google::firestore::v1::DocumentMask& BatchGetDocumentsRequest::_internal_mask() const {
+inline const ::google::firestore::v1::TransactionOptions& BeginTransactionRequest::_internal_options() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::DocumentMask* p = _impl_.mask_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::DocumentMask&>(::google::firestore::v1::_DocumentMask_default_instance_);
+  const ::google::firestore::v1::TransactionOptions* p = _impl_.options_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::TransactionOptions&>(::google::firestore::v1::_TransactionOptions_default_instance_);
 }
-inline const ::google::firestore::v1::DocumentMask& BatchGetDocumentsRequest::mask() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.mask)
-  return _internal_mask();
+inline const ::google::firestore::v1::TransactionOptions& BeginTransactionRequest::options() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BeginTransactionRequest.options)
+  return _internal_options();
 }
-inline void BatchGetDocumentsRequest::unsafe_arena_set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
+inline void BeginTransactionRequest::unsafe_arena_set_allocated_options(::google::firestore::v1::TransactionOptions* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.options_);
   }
-  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
+  _impl_.options_ = reinterpret_cast<::google::firestore::v1::TransactionOptions*>(value);
   if (value != nullptr) {
     _impl_._has_bits_[0] |= 0x00000001u;
   } else {
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.mask)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BeginTransactionRequest.options)
 }
-inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::release_mask() {
+inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::release_options() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::DocumentMask* released = _impl_.mask_;
-  _impl_.mask_ = nullptr;
+  ::google::firestore::v1::TransactionOptions* released = _impl_.options_;
+  _impl_.options_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -8852,34 +10081,34 @@ inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::release_
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::unsafe_arena_release_mask() {
+inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::unsafe_arena_release_options() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.mask)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BeginTransactionRequest.options)
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::DocumentMask* temp = _impl_.mask_;
-  _impl_.mask_ = nullptr;
+  ::google::firestore::v1::TransactionOptions* temp = _impl_.options_;
+  _impl_.options_ = nullptr;
   return temp;
 }
-inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::_internal_mutable_mask() {
+inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::_internal_mutable_options() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.mask_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::DocumentMask>(GetArena());
-    _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(p);
+  if (_impl_.options_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::TransactionOptions>(GetArena());
+    _impl_.options_ = reinterpret_cast<::google::firestore::v1::TransactionOptions*>(p);
   }
-  return _impl_.mask_;
+  return _impl_.options_;
 }
-inline ::google::firestore::v1::DocumentMask* BatchGetDocumentsRequest::mutable_mask() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::DocumentMask* _msg = _internal_mutable_mask();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.mask)
+inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::mutable_options() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::TransactionOptions* _msg = _internal_mutable_options();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BeginTransactionRequest.options)
   return _msg;
 }
-inline void BatchGetDocumentsRequest::set_allocated_mask(::google::firestore::v1::DocumentMask* value) {
+inline void BeginTransactionRequest::set_allocated_options(::google::firestore::v1::TransactionOptions* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.mask_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.options_);
   }
 
   if (value != nullptr) {
@@ -8892,437 +10121,462 @@ inline void BatchGetDocumentsRequest::set_allocated_mask(::google::firestore::v1
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
 
-  _impl_.mask_ = reinterpret_cast<::google::firestore::v1::DocumentMask*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.mask)
+  _impl_.options_ = reinterpret_cast<::google::firestore::v1::TransactionOptions*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BeginTransactionRequest.options)
 }
 
-// bytes transaction = 4;
-inline bool BatchGetDocumentsRequest::has_transaction() const {
-  return consistency_selector_case() == kTransaction;
-}
-inline void BatchGetDocumentsRequest::set_has_transaction() {
-  _impl_._oneof_case_[0] = kTransaction;
-}
-inline void BatchGetDocumentsRequest::clear_transaction() {
+// -------------------------------------------------------------------
+
+// BeginTransactionResponse
+
+// bytes transaction = 1;
+inline void BeginTransactionResponse::clear_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (consistency_selector_case() == kTransaction) {
-    _impl_.consistency_selector_.transaction_.Destroy();
-    clear_has_consistency_selector();
-  }
+  _impl_.transaction_.ClearToEmpty();
 }
-inline const std::string& BatchGetDocumentsRequest::transaction() const
+inline const std::string& BeginTransactionResponse::transaction() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+  // @@protoc_insertion_point(field_get:google.firestore.v1.BeginTransactionResponse.transaction)
   return _internal_transaction();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsRequest::set_transaction(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void BeginTransactionResponse::set_transaction(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (consistency_selector_case() != kTransaction) {
-    clear_consistency_selector();
+  ;
+  _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.BeginTransactionResponse.transaction)
+}
+inline std::string* BeginTransactionResponse::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_transaction();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BeginTransactionResponse.transaction)
+  return _s;
+}
+inline const std::string& BeginTransactionResponse::_internal_transaction() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.transaction_.Get();
+}
+inline void BeginTransactionResponse::_internal_set_transaction(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.transaction_.Set(value, GetArena());
+}
+inline std::string* BeginTransactionResponse::_internal_mutable_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.transaction_.Mutable( GetArena());
+}
+inline std::string* BeginTransactionResponse::release_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.BeginTransactionResponse.transaction)
+  return _impl_.transaction_.Release();
+}
+inline void BeginTransactionResponse::set_allocated_transaction(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.transaction_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.transaction_.IsDefault()) {
+          _impl_.transaction_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BeginTransactionResponse.transaction)
+}
 
-    set_has_transaction();
-    _impl_.consistency_selector_.transaction_.InitDefault();
-  }
-  _impl_.consistency_selector_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+// -------------------------------------------------------------------
+
+// CommitRequest
+
+// string database = 1;
+inline void CommitRequest::clear_database() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.database_.ClearToEmpty();
+}
+inline const std::string& CommitRequest::database() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitRequest.database)
+  return _internal_database();
 }
-inline std::string* BatchGetDocumentsRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CommitRequest::set_database(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.CommitRequest.database)
+}
+inline std::string* CommitRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_database();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitRequest.database)
   return _s;
 }
-inline const std::string& BatchGetDocumentsRequest::_internal_transaction() const {
+inline const std::string& CommitRequest::_internal_database() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  if (consistency_selector_case() != kTransaction) {
-    return ::google::protobuf::internal::GetEmptyStringAlreadyInited();
-  }
-  return _impl_.consistency_selector_.transaction_.Get();
+  return _impl_.database_.Get();
 }
-inline void BatchGetDocumentsRequest::_internal_set_transaction(const std::string& value) {
+inline void CommitRequest::_internal_set_database(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (consistency_selector_case() != kTransaction) {
-    clear_consistency_selector();
-
-    set_has_transaction();
-    _impl_.consistency_selector_.transaction_.InitDefault();
-  }
-  _impl_.consistency_selector_.transaction_.Set(value, GetArena());
+  ;
+  _impl_.database_.Set(value, GetArena());
 }
-inline std::string* BatchGetDocumentsRequest::_internal_mutable_transaction() {
+inline std::string* CommitRequest::_internal_mutable_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (consistency_selector_case() != kTransaction) {
-    clear_consistency_selector();
-
-    set_has_transaction();
-    _impl_.consistency_selector_.transaction_.InitDefault();
-  }
-  return _impl_.consistency_selector_.transaction_.Mutable( GetArena());
+  ;
+  return _impl_.database_.Mutable( GetArena());
 }
-inline std::string* BatchGetDocumentsRequest::release_transaction() {
+inline std::string* CommitRequest::release_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.transaction)
-  if (consistency_selector_case() != kTransaction) {
-    return nullptr;
-  }
-  clear_has_consistency_selector();
-  return _impl_.consistency_selector_.transaction_.Release();
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CommitRequest.database)
+  return _impl_.database_.Release();
 }
-inline void BatchGetDocumentsRequest::set_allocated_transaction(std::string* value) {
+inline void CommitRequest::set_allocated_database(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (has_consistency_selector()) {
-    clear_consistency_selector();
-  }
-  if (value != nullptr) {
-    set_has_transaction();
-    _impl_.consistency_selector_.transaction_.InitAllocated(value, GetArena());
-  }
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.transaction)
+  _impl_.database_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.database_.IsDefault()) {
+          _impl_.database_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CommitRequest.database)
 }
 
-// .google.firestore.v1.TransactionOptions new_transaction = 5;
-inline bool BatchGetDocumentsRequest::has_new_transaction() const {
-  return consistency_selector_case() == kNewTransaction;
-}
-inline bool BatchGetDocumentsRequest::_internal_has_new_transaction() const {
-  return consistency_selector_case() == kNewTransaction;
+// repeated .google.firestore.v1.Write writes = 2;
+inline int CommitRequest::_internal_writes_size() const {
+  return _internal_writes().size();
 }
-inline void BatchGetDocumentsRequest::set_has_new_transaction() {
-  _impl_._oneof_case_[0] = kNewTransaction;
+inline int CommitRequest::writes_size() const {
+  return _internal_writes_size();
 }
-inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::release_new_transaction() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
-  if (consistency_selector_case() == kNewTransaction) {
-    clear_has_consistency_selector();
-    auto* temp = _impl_.consistency_selector_.new_transaction_;
-    if (GetArena() != nullptr) {
-      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
-    }
-    _impl_.consistency_selector_.new_transaction_ = nullptr;
-    return temp;
-  } else {
-    return nullptr;
-  }
+inline ::google::firestore::v1::Write* CommitRequest::mutable_writes(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitRequest.writes)
+  return _internal_mutable_writes()->Mutable(index);
 }
-inline const ::google::firestore::v1::TransactionOptions& BatchGetDocumentsRequest::_internal_new_transaction() const {
-  return consistency_selector_case() == kNewTransaction ? *_impl_.consistency_selector_.new_transaction_ : reinterpret_cast<::google::firestore::v1::TransactionOptions&>(::google::firestore::v1::_TransactionOptions_default_instance_);
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>* CommitRequest::mutable_writes()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.CommitRequest.writes)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_writes();
 }
-inline const ::google::firestore::v1::TransactionOptions& BatchGetDocumentsRequest::new_transaction() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
-  return _internal_new_transaction();
+inline const ::google::firestore::v1::Write& CommitRequest::writes(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitRequest.writes)
+  return _internal_writes().Get(index);
 }
-inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::unsafe_arena_release_new_transaction() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
-  if (consistency_selector_case() == kNewTransaction) {
-    clear_has_consistency_selector();
-    auto* temp = _impl_.consistency_selector_.new_transaction_;
-    _impl_.consistency_selector_.new_transaction_ = nullptr;
-    return temp;
-  } else {
-    return nullptr;
-  }
+inline ::google::firestore::v1::Write* CommitRequest::add_writes() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::google::firestore::v1::Write* _add = _internal_mutable_writes()->Add();
+  // @@protoc_insertion_point(field_add:google.firestore.v1.CommitRequest.writes)
+  return _add;
 }
-inline void BatchGetDocumentsRequest::unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value) {
-  // We rely on the oneof clear method to free the earlier contents
-  // of this oneof. We can directly use the pointer we're given to
-  // set the new value.
-  clear_consistency_selector();
-  if (value) {
-    set_has_new_transaction();
-    _impl_.consistency_selector_.new_transaction_ = value;
-  }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>& CommitRequest::writes() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.CommitRequest.writes)
+  return _internal_writes();
 }
-inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::_internal_mutable_new_transaction() {
-  if (consistency_selector_case() != kNewTransaction) {
-    clear_consistency_selector();
-    set_has_new_transaction();
-    _impl_.consistency_selector_.new_transaction_ = CreateMaybeMessage<::google::firestore::v1::TransactionOptions>(GetArena());
-  }
-  return _impl_.consistency_selector_.new_transaction_;
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>&
+CommitRequest::_internal_writes() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.writes_;
 }
-inline ::google::firestore::v1::TransactionOptions* BatchGetDocumentsRequest::mutable_new_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::TransactionOptions* _msg = _internal_mutable_new_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.new_transaction)
-  return _msg;
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>*
+CommitRequest::_internal_mutable_writes() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.writes_;
 }
 
-// .google.protobuf.Timestamp read_time = 7;
-inline bool BatchGetDocumentsRequest::has_read_time() const {
-  return consistency_selector_case() == kReadTime;
+// bytes transaction = 3;
+inline void CommitRequest::clear_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.transaction_.ClearToEmpty();
 }
-inline bool BatchGetDocumentsRequest::_internal_has_read_time() const {
-  return consistency_selector_case() == kReadTime;
+inline const std::string& CommitRequest::transaction() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitRequest.transaction)
+  return _internal_transaction();
 }
-inline void BatchGetDocumentsRequest::set_has_read_time() {
-  _impl_._oneof_case_[0] = kReadTime;
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CommitRequest::set_transaction(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.CommitRequest.transaction)
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::release_read_time() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsRequest.read_time)
-  if (consistency_selector_case() == kReadTime) {
-    clear_has_consistency_selector();
-    auto* temp = _impl_.consistency_selector_.read_time_;
-    if (GetArena() != nullptr) {
-      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
-    }
-    _impl_.consistency_selector_.read_time_ = nullptr;
-    return temp;
-  } else {
-    return nullptr;
-  }
+inline std::string* CommitRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_transaction();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitRequest.transaction)
+  return _s;
 }
-inline const ::google::protobuf::Timestamp& BatchGetDocumentsRequest::_internal_read_time() const {
-  return consistency_selector_case() == kReadTime ? *_impl_.consistency_selector_.read_time_ : reinterpret_cast<::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
+inline const std::string& CommitRequest::_internal_transaction() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.transaction_.Get();
 }
-inline const ::google::protobuf::Timestamp& BatchGetDocumentsRequest::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsRequest.read_time)
-  return _internal_read_time();
+inline void CommitRequest::_internal_set_transaction(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.transaction_.Set(value, GetArena());
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::unsafe_arena_release_read_time() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.BatchGetDocumentsRequest.read_time)
-  if (consistency_selector_case() == kReadTime) {
-    clear_has_consistency_selector();
-    auto* temp = _impl_.consistency_selector_.read_time_;
-    _impl_.consistency_selector_.read_time_ = nullptr;
-    return temp;
-  } else {
-    return nullptr;
-  }
+inline std::string* CommitRequest::_internal_mutable_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.transaction_.Mutable( GetArena());
 }
-inline void BatchGetDocumentsRequest::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
-  // We rely on the oneof clear method to free the earlier contents
-  // of this oneof. We can directly use the pointer we're given to
-  // set the new value.
-  clear_consistency_selector();
-  if (value) {
-    set_has_read_time();
-    _impl_.consistency_selector_.read_time_ = value;
-  }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsRequest.read_time)
+inline std::string* CommitRequest::release_transaction() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CommitRequest.transaction)
+  return _impl_.transaction_.Release();
+}
+inline void CommitRequest::set_allocated_transaction(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.transaction_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.transaction_.IsDefault()) {
+          _impl_.transaction_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CommitRequest.transaction)
+}
+
+// -------------------------------------------------------------------
+
+// CommitResponse
+
+// repeated .google.firestore.v1.WriteResult write_results = 1;
+inline int CommitResponse::_internal_write_results_size() const {
+  return _internal_write_results().size();
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::_internal_mutable_read_time() {
-  if (consistency_selector_case() != kReadTime) {
-    clear_consistency_selector();
-    set_has_read_time();
-    _impl_.consistency_selector_.read_time_ = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
-  }
-  return _impl_.consistency_selector_.read_time_;
+inline int CommitResponse::write_results_size() const {
+  return _internal_write_results_size();
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsRequest::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsRequest.read_time)
-  return _msg;
+inline ::google::firestore::v1::WriteResult* CommitResponse::mutable_write_results(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitResponse.write_results)
+  return _internal_mutable_write_results()->Mutable(index);
 }
-
-inline bool BatchGetDocumentsRequest::has_consistency_selector() const {
-  return consistency_selector_case() != CONSISTENCY_SELECTOR_NOT_SET;
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>* CommitResponse::mutable_write_results()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.CommitResponse.write_results)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_write_results();
 }
-inline void BatchGetDocumentsRequest::clear_has_consistency_selector() {
-  _impl_._oneof_case_[0] = CONSISTENCY_SELECTOR_NOT_SET;
+inline const ::google::firestore::v1::WriteResult& CommitResponse::write_results(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitResponse.write_results)
+  return _internal_write_results().Get(index);
 }
-inline BatchGetDocumentsRequest::ConsistencySelectorCase BatchGetDocumentsRequest::consistency_selector_case() const {
-  return BatchGetDocumentsRequest::ConsistencySelectorCase(_impl_._oneof_case_[0]);
+inline ::google::firestore::v1::WriteResult* CommitResponse::add_write_results() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::google::firestore::v1::WriteResult* _add = _internal_mutable_write_results()->Add();
+  // @@protoc_insertion_point(field_add:google.firestore.v1.CommitResponse.write_results)
+  return _add;
 }
-// -------------------------------------------------------------------
-
-// BatchGetDocumentsResponse
-
-// .google.firestore.v1.Document found = 1;
-inline bool BatchGetDocumentsResponse::has_found() const {
-  return result_case() == kFound;
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>& CommitResponse::write_results() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.CommitResponse.write_results)
+  return _internal_write_results();
 }
-inline bool BatchGetDocumentsResponse::_internal_has_found() const {
-  return result_case() == kFound;
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>&
+CommitResponse::_internal_write_results() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.write_results_;
 }
-inline void BatchGetDocumentsResponse::set_has_found() {
-  _impl_._oneof_case_[0] = kFound;
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>*
+CommitResponse::_internal_mutable_write_results() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.write_results_;
 }
-inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::release_found() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.found)
-  if (result_case() == kFound) {
-    clear_has_result();
-    auto* temp = _impl_.result_.found_;
-    if (GetArena() != nullptr) {
-      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
-    }
-    _impl_.result_.found_ = nullptr;
-    return temp;
-  } else {
-    return nullptr;
-  }
+
+// .google.protobuf.Timestamp commit_time = 2;
+inline bool CommitResponse::has_commit_time() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.commit_time_ != nullptr);
+  return value;
 }
-inline const ::google::firestore::v1::Document& BatchGetDocumentsResponse::_internal_found() const {
-  return result_case() == kFound ? *_impl_.result_.found_ : reinterpret_cast<::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
+inline const ::google::protobuf::Timestamp& CommitResponse::_internal_commit_time() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::google::protobuf::Timestamp* p = _impl_.commit_time_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
 }
-inline const ::google::firestore::v1::Document& BatchGetDocumentsResponse::found() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.found)
-  return _internal_found();
+inline const ::google::protobuf::Timestamp& CommitResponse::commit_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitResponse.commit_time)
+  return _internal_commit_time();
 }
-inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::unsafe_arena_release_found() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.BatchGetDocumentsResponse.found)
-  if (result_case() == kFound) {
-    clear_has_result();
-    auto* temp = _impl_.result_.found_;
-    _impl_.result_.found_ = nullptr;
-    return temp;
+inline void CommitResponse::unsafe_arena_set_allocated_commit_time(::google::protobuf::Timestamp* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.commit_time_);
+  }
+  _impl_.commit_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
   } else {
-    return nullptr;
+    _impl_._has_bits_[0] &= ~0x00000001u;
   }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.CommitResponse.commit_time)
 }
-inline void BatchGetDocumentsResponse::unsafe_arena_set_allocated_found(::google::firestore::v1::Document* value) {
-  // We rely on the oneof clear method to free the earlier contents
-  // of this oneof. We can directly use the pointer we're given to
-  // set the new value.
-  clear_result();
-  if (value) {
-    set_has_found();
-    _impl_.result_.found_ = value;
+inline ::google::protobuf::Timestamp* CommitResponse::release_commit_time() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::protobuf::Timestamp* released = _impl_.commit_time_;
+  _impl_.commit_time_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.found)
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
 }
-inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::_internal_mutable_found() {
-  if (result_case() != kFound) {
-    clear_result();
-    set_has_found();
-    _impl_.result_.found_ = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
+inline ::google::protobuf::Timestamp* CommitResponse::unsafe_arena_release_commit_time() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.CommitResponse.commit_time)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::protobuf::Timestamp* temp = _impl_.commit_time_;
+  _impl_.commit_time_ = nullptr;
+  return temp;
+}
+inline ::google::protobuf::Timestamp* CommitResponse::_internal_mutable_commit_time() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.commit_time_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
+    _impl_.commit_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(p);
   }
-  return _impl_.result_.found_;
+  return _impl_.commit_time_;
 }
-inline ::google::firestore::v1::Document* BatchGetDocumentsResponse::mutable_found() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::Document* _msg = _internal_mutable_found();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.found)
+inline ::google::protobuf::Timestamp* CommitResponse::mutable_commit_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::protobuf::Timestamp* _msg = _internal_mutable_commit_time();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitResponse.commit_time)
   return _msg;
 }
+inline void CommitResponse::set_allocated_commit_time(::google::protobuf::Timestamp* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.commit_time_);
+  }
 
-// string missing = 2;
-inline bool BatchGetDocumentsResponse::has_missing() const {
-  return result_case() == kMissing;
-}
-inline void BatchGetDocumentsResponse::set_has_missing() {
-  _impl_._oneof_case_[0] = kMissing;
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.commit_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CommitResponse.commit_time)
 }
-inline void BatchGetDocumentsResponse::clear_missing() {
+
+// -------------------------------------------------------------------
+
+// RollbackRequest
+
+// string database = 1;
+inline void RollbackRequest::clear_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (result_case() == kMissing) {
-    _impl_.result_.missing_.Destroy();
-    clear_has_result();
-  }
+  _impl_.database_.ClearToEmpty();
 }
-inline const std::string& BatchGetDocumentsResponse::missing() const
+inline const std::string& RollbackRequest::database() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.missing)
-  return _internal_missing();
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RollbackRequest.database)
+  return _internal_database();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsResponse::set_missing(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void RollbackRequest::set_database(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (result_case() != kMissing) {
-    clear_result();
-
-    set_has_missing();
-    _impl_.result_.missing_.InitDefault();
-  }
-  _impl_.result_.missing_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsResponse.missing)
+  ;
+  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.RollbackRequest.database)
 }
-inline std::string* BatchGetDocumentsResponse::mutable_missing() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_missing();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.missing)
+inline std::string* RollbackRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_database();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RollbackRequest.database)
   return _s;
 }
-inline const std::string& BatchGetDocumentsResponse::_internal_missing() const {
+inline const std::string& RollbackRequest::_internal_database() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  if (result_case() != kMissing) {
-    return ::google::protobuf::internal::GetEmptyStringAlreadyInited();
-  }
-  return _impl_.result_.missing_.Get();
-}
-inline void BatchGetDocumentsResponse::_internal_set_missing(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (result_case() != kMissing) {
-    clear_result();
-
-    set_has_missing();
-    _impl_.result_.missing_.InitDefault();
-  }
-  _impl_.result_.missing_.Set(value, GetArena());
+  return _impl_.database_.Get();
 }
-inline std::string* BatchGetDocumentsResponse::_internal_mutable_missing() {
+inline void RollbackRequest::_internal_set_database(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (result_case() != kMissing) {
-    clear_result();
-
-    set_has_missing();
-    _impl_.result_.missing_.InitDefault();
-  }
-  return _impl_.result_.missing_.Mutable( GetArena());
+  ;
+  _impl_.database_.Set(value, GetArena());
 }
-inline std::string* BatchGetDocumentsResponse::release_missing() {
+inline std::string* RollbackRequest::_internal_mutable_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.missing)
-  if (result_case() != kMissing) {
-    return nullptr;
-  }
-  clear_has_result();
-  return _impl_.result_.missing_.Release();
+  ;
+  return _impl_.database_.Mutable( GetArena());
 }
-inline void BatchGetDocumentsResponse::set_allocated_missing(std::string* value) {
+inline std::string* RollbackRequest::release_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (has_result()) {
-    clear_result();
-  }
-  if (value != nullptr) {
-    set_has_missing();
-    _impl_.result_.missing_.InitAllocated(value, GetArena());
-  }
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.missing)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RollbackRequest.database)
+  return _impl_.database_.Release();
+}
+inline void RollbackRequest::set_allocated_database(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.database_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.database_.IsDefault()) {
+          _impl_.database_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RollbackRequest.database)
 }
 
-// bytes transaction = 3;
-inline void BatchGetDocumentsResponse::clear_transaction() {
+// bytes transaction = 2;
+inline void RollbackRequest::clear_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_.transaction_.ClearToEmpty();
 }
-inline const std::string& BatchGetDocumentsResponse::transaction() const
+inline const std::string& RollbackRequest::transaction() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.transaction)
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RollbackRequest.transaction)
   return _internal_transaction();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void BatchGetDocumentsResponse::set_transaction(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void RollbackRequest::set_transaction(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BatchGetDocumentsResponse.transaction)
+  // @@protoc_insertion_point(field_set:google.firestore.v1.RollbackRequest.transaction)
 }
-inline std::string* BatchGetDocumentsResponse::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline std::string* RollbackRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
   std::string* _s = _internal_mutable_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.transaction)
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RollbackRequest.transaction)
   return _s;
 }
-inline const std::string& BatchGetDocumentsResponse::_internal_transaction() const {
+inline const std::string& RollbackRequest::_internal_transaction() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
   return _impl_.transaction_.Get();
 }
-inline void BatchGetDocumentsResponse::_internal_set_transaction(const std::string& value) {
+inline void RollbackRequest::_internal_set_transaction(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   _impl_.transaction_.Set(value, GetArena());
 }
-inline std::string* BatchGetDocumentsResponse::_internal_mutable_transaction() {
+inline std::string* RollbackRequest::_internal_mutable_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   return _impl_.transaction_.Mutable( GetArena());
 }
-inline std::string* BatchGetDocumentsResponse::release_transaction() {
+inline std::string* RollbackRequest::release_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.transaction)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RollbackRequest.transaction)
   return _impl_.transaction_.Release();
 }
-inline void BatchGetDocumentsResponse::set_allocated_transaction(std::string* value) {
+inline void RollbackRequest::set_allocated_transaction(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_.transaction_.SetAllocated(value, GetArena());
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
@@ -9330,552 +10584,461 @@ inline void BatchGetDocumentsResponse::set_allocated_transaction(std::string* va
           _impl_.transaction_.Set("", GetArena());
         }
   #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.transaction)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RollbackRequest.transaction)
 }
 
-// .google.protobuf.Timestamp read_time = 4;
-inline bool BatchGetDocumentsResponse::has_read_time() const {
-  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.read_time_ != nullptr);
-  return value;
+// -------------------------------------------------------------------
+
+// RunQueryRequest
+
+// string parent = 1;
+inline void RunQueryRequest::clear_parent() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.parent_.ClearToEmpty();
 }
-inline const ::google::protobuf::Timestamp& BatchGetDocumentsResponse::_internal_read_time() const {
+inline const std::string& RunQueryRequest::parent() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.parent)
+  return _internal_parent();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void RunQueryRequest::set_parent(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.parent_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryRequest.parent)
+}
+inline std::string* RunQueryRequest::mutable_parent() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_parent();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.parent)
+  return _s;
+}
+inline const std::string& RunQueryRequest::_internal_parent() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::protobuf::Timestamp* p = _impl_.read_time_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
+  return _impl_.parent_.Get();
 }
-inline const ::google::protobuf::Timestamp& BatchGetDocumentsResponse::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BatchGetDocumentsResponse.read_time)
-  return _internal_read_time();
+inline void RunQueryRequest::_internal_set_parent(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.parent_.Set(value, GetArena());
 }
-inline void BatchGetDocumentsResponse::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
+inline std::string* RunQueryRequest::_internal_mutable_parent() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
-  }
-  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
-  if (value != nullptr) {
-    _impl_._has_bits_[0] |= 0x00000001u;
-  } else {
-    _impl_._has_bits_[0] &= ~0x00000001u;
-  }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.read_time)
+  ;
+  return _impl_.parent_.Mutable( GetArena());
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::release_read_time() {
+inline std::string* RunQueryRequest::release_parent() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-
-  _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::protobuf::Timestamp* released = _impl_.read_time_;
-  _impl_.read_time_ = nullptr;
-#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
-  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
-  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
-  if (GetArena() == nullptr) {
-    delete old;
-  }
-#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
-  if (GetArena() != nullptr) {
-    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
-  }
-#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
-  return released;
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.parent)
+  return _impl_.parent_.Release();
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::unsafe_arena_release_read_time() {
+inline void RunQueryRequest::set_allocated_parent(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BatchGetDocumentsResponse.read_time)
+  _impl_.parent_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.parent_.IsDefault()) {
+          _impl_.parent_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryRequest.parent)
+}
 
-  _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::protobuf::Timestamp* temp = _impl_.read_time_;
-  _impl_.read_time_ = nullptr;
-  return temp;
+// .google.firestore.v1.StructuredQuery structured_query = 2;
+inline bool RunQueryRequest::has_structured_query() const {
+  return query_type_case() == kStructuredQuery;
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::_internal_mutable_read_time() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.read_time_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
-    _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(p);
-  }
-  return _impl_.read_time_;
+inline bool RunQueryRequest::_internal_has_structured_query() const {
+  return query_type_case() == kStructuredQuery;
 }
-inline ::google::protobuf::Timestamp* BatchGetDocumentsResponse::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BatchGetDocumentsResponse.read_time)
-  return _msg;
+inline void RunQueryRequest::set_has_structured_query() {
+  _impl_._oneof_case_[0] = kStructuredQuery;
 }
-inline void BatchGetDocumentsResponse::set_allocated_read_time(::google::protobuf::Timestamp* value) {
-  ::google::protobuf::Arena* message_arena = GetArena();
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
-  }
-
-  if (value != nullptr) {
-    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
-    if (message_arena != submessage_arena) {
-      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::release_structured_query() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.structured_query)
+  if (query_type_case() == kStructuredQuery) {
+    clear_has_query_type();
+    auto* temp = _impl_.query_type_.structured_query_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
     }
-    _impl_._has_bits_[0] |= 0x00000001u;
+    _impl_.query_type_.structured_query_ = nullptr;
+    return temp;
   } else {
-    _impl_._has_bits_[0] &= ~0x00000001u;
+    return nullptr;
   }
-
-  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BatchGetDocumentsResponse.read_time)
-}
-
-inline bool BatchGetDocumentsResponse::has_result() const {
-  return result_case() != RESULT_NOT_SET;
 }
-inline void BatchGetDocumentsResponse::clear_has_result() {
-  _impl_._oneof_case_[0] = RESULT_NOT_SET;
+inline const ::google::firestore::v1::StructuredQuery& RunQueryRequest::_internal_structured_query() const {
+  return query_type_case() == kStructuredQuery ? *_impl_.query_type_.structured_query_ : reinterpret_cast<::google::firestore::v1::StructuredQuery&>(::google::firestore::v1::_StructuredQuery_default_instance_);
 }
-inline BatchGetDocumentsResponse::ResultCase BatchGetDocumentsResponse::result_case() const {
-  return BatchGetDocumentsResponse::ResultCase(_impl_._oneof_case_[0]);
+inline const ::google::firestore::v1::StructuredQuery& RunQueryRequest::structured_query() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.structured_query)
+  return _internal_structured_query();
 }
-// -------------------------------------------------------------------
-
-// BeginTransactionRequest
-
-// string database = 1;
-inline void BeginTransactionRequest::clear_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.ClearToEmpty();
+inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::unsafe_arena_release_structured_query() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.RunQueryRequest.structured_query)
+  if (query_type_case() == kStructuredQuery) {
+    clear_has_query_type();
+    auto* temp = _impl_.query_type_.structured_query_;
+    _impl_.query_type_.structured_query_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
 }
-inline const std::string& BeginTransactionRequest::database() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BeginTransactionRequest.database)
-  return _internal_database();
+inline void RunQueryRequest::unsafe_arena_set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_query_type();
+  if (value) {
+    set_has_structured_query();
+    _impl_.query_type_.structured_query_ = value;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryRequest.structured_query)
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void BeginTransactionRequest::set_database(Arg_&& arg,
-                                                     Args_... args) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BeginTransactionRequest.database)
+inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::_internal_mutable_structured_query() {
+  if (query_type_case() != kStructuredQuery) {
+    clear_query_type();
+    set_has_structured_query();
+    _impl_.query_type_.structured_query_ = CreateMaybeMessage<::google::firestore::v1::StructuredQuery>(GetArena());
+  }
+  return _impl_.query_type_.structured_query_;
 }
-inline std::string* BeginTransactionRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_database();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BeginTransactionRequest.database)
-  return _s;
+inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::mutable_structured_query() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::StructuredQuery* _msg = _internal_mutable_structured_query();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.structured_query)
+  return _msg;
 }
-inline const std::string& BeginTransactionRequest::_internal_database() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.database_.Get();
+
+// bytes transaction = 5;
+inline bool RunQueryRequest::has_transaction() const {
+  return consistency_selector_case() == kTransaction;
 }
-inline void BeginTransactionRequest::_internal_set_database(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(value, GetArena());
+inline void RunQueryRequest::set_has_transaction() {
+  _impl_._oneof_case_[1] = kTransaction;
 }
-inline std::string* BeginTransactionRequest::_internal_mutable_database() {
+inline void RunQueryRequest::clear_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.database_.Mutable( GetArena());
+  if (consistency_selector_case() == kTransaction) {
+    _impl_.consistency_selector_.transaction_.Destroy();
+    clear_has_consistency_selector();
+  }
 }
-inline std::string* BeginTransactionRequest::release_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BeginTransactionRequest.database)
-  return _impl_.database_.Release();
+inline const std::string& RunQueryRequest::transaction() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.transaction)
+  return _internal_transaction();
 }
-inline void BeginTransactionRequest::set_allocated_database(std::string* value) {
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void RunQueryRequest::set_transaction(Arg_&& arg,
+                                                     Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.database_.IsDefault()) {
-          _impl_.database_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BeginTransactionRequest.database)
-}
+  if (consistency_selector_case() != kTransaction) {
+    clear_consistency_selector();
 
-// .google.firestore.v1.TransactionOptions options = 2;
-inline bool BeginTransactionRequest::has_options() const {
-  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.options_ != nullptr);
-  return value;
-}
-inline const ::google::firestore::v1::TransactionOptions& BeginTransactionRequest::_internal_options() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::TransactionOptions* p = _impl_.options_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::TransactionOptions&>(::google::firestore::v1::_TransactionOptions_default_instance_);
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitDefault();
+  }
+  _impl_.consistency_selector_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryRequest.transaction)
 }
-inline const ::google::firestore::v1::TransactionOptions& BeginTransactionRequest::options() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BeginTransactionRequest.options)
-  return _internal_options();
+inline std::string* RunQueryRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_transaction();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.transaction)
+  return _s;
 }
-inline void BeginTransactionRequest::unsafe_arena_set_allocated_options(::google::firestore::v1::TransactionOptions* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.options_);
-  }
-  _impl_.options_ = reinterpret_cast<::google::firestore::v1::TransactionOptions*>(value);
-  if (value != nullptr) {
-    _impl_._has_bits_[0] |= 0x00000001u;
-  } else {
-    _impl_._has_bits_[0] &= ~0x00000001u;
+inline const std::string& RunQueryRequest::_internal_transaction() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  if (consistency_selector_case() != kTransaction) {
+    return ::google::protobuf::internal::GetEmptyStringAlreadyInited();
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.BeginTransactionRequest.options)
+  return _impl_.consistency_selector_.transaction_.Get();
 }
-inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::release_options() {
+inline void RunQueryRequest::_internal_set_transaction(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (consistency_selector_case() != kTransaction) {
+    clear_consistency_selector();
 
-  _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::TransactionOptions* released = _impl_.options_;
-  _impl_.options_ = nullptr;
-#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
-  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
-  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
-  if (GetArena() == nullptr) {
-    delete old;
-  }
-#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
-  if (GetArena() != nullptr) {
-    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitDefault();
   }
-#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
-  return released;
+  _impl_.consistency_selector_.transaction_.Set(value, GetArena());
 }
-inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::unsafe_arena_release_options() {
+inline std::string* RunQueryRequest::_internal_mutable_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BeginTransactionRequest.options)
+  if (consistency_selector_case() != kTransaction) {
+    clear_consistency_selector();
 
-  _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::TransactionOptions* temp = _impl_.options_;
-  _impl_.options_ = nullptr;
-  return temp;
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitDefault();
+  }
+  return _impl_.consistency_selector_.transaction_.Mutable( GetArena());
 }
-inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::_internal_mutable_options() {
+inline std::string* RunQueryRequest::release_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.options_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::TransactionOptions>(GetArena());
-    _impl_.options_ = reinterpret_cast<::google::firestore::v1::TransactionOptions*>(p);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.transaction)
+  if (consistency_selector_case() != kTransaction) {
+    return nullptr;
   }
-  return _impl_.options_;
-}
-inline ::google::firestore::v1::TransactionOptions* BeginTransactionRequest::mutable_options() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::TransactionOptions* _msg = _internal_mutable_options();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BeginTransactionRequest.options)
-  return _msg;
+  clear_has_consistency_selector();
+  return _impl_.consistency_selector_.transaction_.Release();
 }
-inline void BeginTransactionRequest::set_allocated_options(::google::firestore::v1::TransactionOptions* value) {
-  ::google::protobuf::Arena* message_arena = GetArena();
+inline void RunQueryRequest::set_allocated_transaction(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.options_);
+  if (has_consistency_selector()) {
+    clear_consistency_selector();
   }
-
   if (value != nullptr) {
-    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
-    if (message_arena != submessage_arena) {
-      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
-    }
-    _impl_._has_bits_[0] |= 0x00000001u;
-  } else {
-    _impl_._has_bits_[0] &= ~0x00000001u;
+    set_has_transaction();
+    _impl_.consistency_selector_.transaction_.InitAllocated(value, GetArena());
   }
-
-  _impl_.options_ = reinterpret_cast<::google::firestore::v1::TransactionOptions*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BeginTransactionRequest.options)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryRequest.transaction)
 }
 
-// -------------------------------------------------------------------
-
-// BeginTransactionResponse
-
-// bytes transaction = 1;
-inline void BeginTransactionResponse::clear_transaction() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.transaction_.ClearToEmpty();
-}
-inline const std::string& BeginTransactionResponse::transaction() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.BeginTransactionResponse.transaction)
-  return _internal_transaction();
+// .google.firestore.v1.TransactionOptions new_transaction = 6;
+inline bool RunQueryRequest::has_new_transaction() const {
+  return consistency_selector_case() == kNewTransaction;
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void BeginTransactionResponse::set_transaction(Arg_&& arg,
-                                                     Args_... args) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.BeginTransactionResponse.transaction)
+inline bool RunQueryRequest::_internal_has_new_transaction() const {
+  return consistency_selector_case() == kNewTransaction;
 }
-inline std::string* BeginTransactionResponse::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.BeginTransactionResponse.transaction)
-  return _s;
+inline void RunQueryRequest::set_has_new_transaction() {
+  _impl_._oneof_case_[1] = kNewTransaction;
 }
-inline const std::string& BeginTransactionResponse::_internal_transaction() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.transaction_.Get();
+inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::release_new_transaction() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.new_transaction)
+  if (consistency_selector_case() == kNewTransaction) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.new_transaction_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.consistency_selector_.new_transaction_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
 }
-inline void BeginTransactionResponse::_internal_set_transaction(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.transaction_.Set(value, GetArena());
+inline const ::google::firestore::v1::TransactionOptions& RunQueryRequest::_internal_new_transaction() const {
+  return consistency_selector_case() == kNewTransaction ? *_impl_.consistency_selector_.new_transaction_ : reinterpret_cast<::google::firestore::v1::TransactionOptions&>(::google::firestore::v1::_TransactionOptions_default_instance_);
 }
-inline std::string* BeginTransactionResponse::_internal_mutable_transaction() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.transaction_.Mutable( GetArena());
+inline const ::google::firestore::v1::TransactionOptions& RunQueryRequest::new_transaction() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.new_transaction)
+  return _internal_new_transaction();
 }
-inline std::string* BeginTransactionResponse::release_transaction() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.BeginTransactionResponse.transaction)
-  return _impl_.transaction_.Release();
+inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::unsafe_arena_release_new_transaction() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.RunQueryRequest.new_transaction)
+  if (consistency_selector_case() == kNewTransaction) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.new_transaction_;
+    _impl_.consistency_selector_.new_transaction_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
 }
-inline void BeginTransactionResponse::set_allocated_transaction(std::string* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.transaction_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.transaction_.IsDefault()) {
-          _impl_.transaction_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.BeginTransactionResponse.transaction)
+inline void RunQueryRequest::unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_consistency_selector();
+  if (value) {
+    set_has_new_transaction();
+    _impl_.consistency_selector_.new_transaction_ = value;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryRequest.new_transaction)
 }
-
-// -------------------------------------------------------------------
-
-// CommitRequest
-
-// string database = 1;
-inline void CommitRequest::clear_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.ClearToEmpty();
+inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::_internal_mutable_new_transaction() {
+  if (consistency_selector_case() != kNewTransaction) {
+    clear_consistency_selector();
+    set_has_new_transaction();
+    _impl_.consistency_selector_.new_transaction_ = CreateMaybeMessage<::google::firestore::v1::TransactionOptions>(GetArena());
+  }
+  return _impl_.consistency_selector_.new_transaction_;
 }
-inline const std::string& CommitRequest::database() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitRequest.database)
-  return _internal_database();
+inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::mutable_new_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::TransactionOptions* _msg = _internal_mutable_new_transaction();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.new_transaction)
+  return _msg;
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void CommitRequest::set_database(Arg_&& arg,
-                                                     Args_... args) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.CommitRequest.database)
+
+// .google.protobuf.Timestamp read_time = 7;
+inline bool RunQueryRequest::has_read_time() const {
+  return consistency_selector_case() == kReadTime;
 }
-inline std::string* CommitRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_database();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitRequest.database)
-  return _s;
+inline bool RunQueryRequest::_internal_has_read_time() const {
+  return consistency_selector_case() == kReadTime;
 }
-inline const std::string& CommitRequest::_internal_database() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.database_.Get();
+inline void RunQueryRequest::set_has_read_time() {
+  _impl_._oneof_case_[1] = kReadTime;
 }
-inline void CommitRequest::_internal_set_database(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(value, GetArena());
+inline ::google::protobuf::Timestamp* RunQueryRequest::release_read_time() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.read_time)
+  if (consistency_selector_case() == kReadTime) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.read_time_;
+    if (GetArena() != nullptr) {
+      temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.consistency_selector_.read_time_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
 }
-inline std::string* CommitRequest::_internal_mutable_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.database_.Mutable( GetArena());
+inline const ::google::protobuf::Timestamp& RunQueryRequest::_internal_read_time() const {
+  return consistency_selector_case() == kReadTime ? *_impl_.consistency_selector_.read_time_ : reinterpret_cast<::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
 }
-inline std::string* CommitRequest::release_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CommitRequest.database)
-  return _impl_.database_.Release();
+inline const ::google::protobuf::Timestamp& RunQueryRequest::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.read_time)
+  return _internal_read_time();
 }
-inline void CommitRequest::set_allocated_database(std::string* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.database_.IsDefault()) {
-          _impl_.database_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CommitRequest.database)
+inline ::google::protobuf::Timestamp* RunQueryRequest::unsafe_arena_release_read_time() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.RunQueryRequest.read_time)
+  if (consistency_selector_case() == kReadTime) {
+    clear_has_consistency_selector();
+    auto* temp = _impl_.consistency_selector_.read_time_;
+    _impl_.consistency_selector_.read_time_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
 }
-
-// repeated .google.firestore.v1.Write writes = 2;
-inline int CommitRequest::_internal_writes_size() const {
-  return _internal_writes().size();
+inline void RunQueryRequest::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
+  // We rely on the oneof clear method to free the earlier contents
+  // of this oneof. We can directly use the pointer we're given to
+  // set the new value.
+  clear_consistency_selector();
+  if (value) {
+    set_has_read_time();
+    _impl_.consistency_selector_.read_time_ = value;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryRequest.read_time)
 }
-inline int CommitRequest::writes_size() const {
-  return _internal_writes_size();
+inline ::google::protobuf::Timestamp* RunQueryRequest::_internal_mutable_read_time() {
+  if (consistency_selector_case() != kReadTime) {
+    clear_consistency_selector();
+    set_has_read_time();
+    _impl_.consistency_selector_.read_time_ = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
+  }
+  return _impl_.consistency_selector_.read_time_;
 }
-inline ::google::firestore::v1::Write* CommitRequest::mutable_writes(int index)
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitRequest.writes)
-  return _internal_mutable_writes()->Mutable(index);
+inline ::google::protobuf::Timestamp* RunQueryRequest::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.read_time)
+  return _msg;
 }
-inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>* CommitRequest::mutable_writes()
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.CommitRequest.writes)
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  return _internal_mutable_writes();
+
+inline bool RunQueryRequest::has_query_type() const {
+  return query_type_case() != QUERY_TYPE_NOT_SET;
 }
-inline const ::google::firestore::v1::Write& CommitRequest::writes(int index) const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitRequest.writes)
-  return _internal_writes().Get(index);
+inline void RunQueryRequest::clear_has_query_type() {
+  _impl_._oneof_case_[0] = QUERY_TYPE_NOT_SET;
 }
-inline ::google::firestore::v1::Write* CommitRequest::add_writes() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ::google::firestore::v1::Write* _add = _internal_mutable_writes()->Add();
-  // @@protoc_insertion_point(field_add:google.firestore.v1.CommitRequest.writes)
-  return _add;
+inline bool RunQueryRequest::has_consistency_selector() const {
+  return consistency_selector_case() != CONSISTENCY_SELECTOR_NOT_SET;
 }
-inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>& CommitRequest::writes() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_list:google.firestore.v1.CommitRequest.writes)
-  return _internal_writes();
+inline void RunQueryRequest::clear_has_consistency_selector() {
+  _impl_._oneof_case_[1] = CONSISTENCY_SELECTOR_NOT_SET;
 }
-inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>&
-CommitRequest::_internal_writes() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.writes_;
+inline RunQueryRequest::QueryTypeCase RunQueryRequest::query_type_case() const {
+  return RunQueryRequest::QueryTypeCase(_impl_._oneof_case_[0]);
 }
-inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Write>*
-CommitRequest::_internal_mutable_writes() {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return &_impl_.writes_;
+inline RunQueryRequest::ConsistencySelectorCase RunQueryRequest::consistency_selector_case() const {
+  return RunQueryRequest::ConsistencySelectorCase(_impl_._oneof_case_[1]);
 }
+// -------------------------------------------------------------------
 
-// bytes transaction = 3;
-inline void CommitRequest::clear_transaction() {
+// RunQueryResponse
+
+// bytes transaction = 2;
+inline void RunQueryResponse::clear_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_.transaction_.ClearToEmpty();
 }
-inline const std::string& CommitRequest::transaction() const
+inline const std::string& RunQueryResponse::transaction() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitRequest.transaction)
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.transaction)
   return _internal_transaction();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void CommitRequest::set_transaction(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void RunQueryResponse::set_transaction(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.CommitRequest.transaction)
+  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryResponse.transaction)
 }
-inline std::string* CommitRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline std::string* RunQueryResponse::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
   std::string* _s = _internal_mutable_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitRequest.transaction)
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryResponse.transaction)
   return _s;
 }
-inline const std::string& CommitRequest::_internal_transaction() const {
+inline const std::string& RunQueryResponse::_internal_transaction() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
   return _impl_.transaction_.Get();
 }
-inline void CommitRequest::_internal_set_transaction(const std::string& value) {
+inline void RunQueryResponse::_internal_set_transaction(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   _impl_.transaction_.Set(value, GetArena());
 }
-inline std::string* CommitRequest::_internal_mutable_transaction() {
+inline std::string* RunQueryResponse::_internal_mutable_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   return _impl_.transaction_.Mutable( GetArena());
 }
-inline std::string* CommitRequest::release_transaction() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CommitRequest.transaction)
-  return _impl_.transaction_.Release();
-}
-inline void CommitRequest::set_allocated_transaction(std::string* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.transaction_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.transaction_.IsDefault()) {
-          _impl_.transaction_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CommitRequest.transaction)
-}
-
-// -------------------------------------------------------------------
-
-// CommitResponse
-
-// repeated .google.firestore.v1.WriteResult write_results = 1;
-inline int CommitResponse::_internal_write_results_size() const {
-  return _internal_write_results().size();
-}
-inline int CommitResponse::write_results_size() const {
-  return _internal_write_results_size();
-}
-inline ::google::firestore::v1::WriteResult* CommitResponse::mutable_write_results(int index)
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitResponse.write_results)
-  return _internal_mutable_write_results()->Mutable(index);
-}
-inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>* CommitResponse::mutable_write_results()
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.CommitResponse.write_results)
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  return _internal_mutable_write_results();
-}
-inline const ::google::firestore::v1::WriteResult& CommitResponse::write_results(int index) const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitResponse.write_results)
-  return _internal_write_results().Get(index);
-}
-inline ::google::firestore::v1::WriteResult* CommitResponse::add_write_results() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline std::string* RunQueryResponse::release_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ::google::firestore::v1::WriteResult* _add = _internal_mutable_write_results()->Add();
-  // @@protoc_insertion_point(field_add:google.firestore.v1.CommitResponse.write_results)
-  return _add;
-}
-inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>& CommitResponse::write_results() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_list:google.firestore.v1.CommitResponse.write_results)
-  return _internal_write_results();
-}
-inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>&
-CommitResponse::_internal_write_results() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.write_results_;
-}
-inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::WriteResult>*
-CommitResponse::_internal_mutable_write_results() {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return &_impl_.write_results_;
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryResponse.transaction)
+  return _impl_.transaction_.Release();
+}
+inline void RunQueryResponse::set_allocated_transaction(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.transaction_.SetAllocated(value, GetArena());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.transaction_.IsDefault()) {
+          _impl_.transaction_.Set("", GetArena());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryResponse.transaction)
 }
 
-// .google.protobuf.Timestamp commit_time = 2;
-inline bool CommitResponse::has_commit_time() const {
+// .google.firestore.v1.Document document = 1;
+inline bool RunQueryResponse::has_document() const {
   bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.commit_time_ != nullptr);
+  PROTOBUF_ASSUME(!value || _impl_.document_ != nullptr);
   return value;
 }
-inline const ::google::protobuf::Timestamp& CommitResponse::_internal_commit_time() const {
+inline const ::google::firestore::v1::Document& RunQueryResponse::_internal_document() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::protobuf::Timestamp* p = _impl_.commit_time_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
+  const ::google::firestore::v1::Document* p = _impl_.document_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
 }
-inline const ::google::protobuf::Timestamp& CommitResponse::commit_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.CommitResponse.commit_time)
-  return _internal_commit_time();
+inline const ::google::firestore::v1::Document& RunQueryResponse::document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.document)
+  return _internal_document();
 }
-inline void CommitResponse::unsafe_arena_set_allocated_commit_time(::google::protobuf::Timestamp* value) {
+inline void RunQueryResponse::unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.commit_time_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
   }
-  _impl_.commit_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
   if (value != nullptr) {
     _impl_._has_bits_[0] |= 0x00000001u;
   } else {
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.CommitResponse.commit_time)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryResponse.document)
 }
-inline ::google::protobuf::Timestamp* CommitResponse::release_commit_time() {
+inline ::google::firestore::v1::Document* RunQueryResponse::release_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::protobuf::Timestamp* released = _impl_.commit_time_;
-  _impl_.commit_time_ = nullptr;
+  ::google::firestore::v1::Document* released = _impl_.document_;
+  _impl_.document_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -9889,34 +11052,34 @@ inline ::google::protobuf::Timestamp* CommitResponse::release_commit_time() {
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::protobuf::Timestamp* CommitResponse::unsafe_arena_release_commit_time() {
+inline ::google::firestore::v1::Document* RunQueryResponse::unsafe_arena_release_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.CommitResponse.commit_time)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryResponse.document)
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::protobuf::Timestamp* temp = _impl_.commit_time_;
-  _impl_.commit_time_ = nullptr;
+  ::google::firestore::v1::Document* temp = _impl_.document_;
+  _impl_.document_ = nullptr;
   return temp;
 }
-inline ::google::protobuf::Timestamp* CommitResponse::_internal_mutable_commit_time() {
+inline ::google::firestore::v1::Document* RunQueryResponse::_internal_mutable_document() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.commit_time_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
-    _impl_.commit_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(p);
+  if (_impl_.document_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
+    _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(p);
   }
-  return _impl_.commit_time_;
+  return _impl_.document_;
 }
-inline ::google::protobuf::Timestamp* CommitResponse::mutable_commit_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::protobuf::Timestamp* _msg = _internal_mutable_commit_time();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.CommitResponse.commit_time)
+inline ::google::firestore::v1::Document* RunQueryResponse::mutable_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Document* _msg = _internal_mutable_document();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryResponse.document)
   return _msg;
 }
-inline void CommitResponse::set_allocated_commit_time(::google::protobuf::Timestamp* value) {
+inline void RunQueryResponse::set_allocated_document(::google::firestore::v1::Document* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.commit_time_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
   }
 
   if (value != nullptr) {
@@ -9929,265 +11092,269 @@ inline void CommitResponse::set_allocated_commit_time(::google::protobuf::Timest
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
 
-  _impl_.commit_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.CommitResponse.commit_time)
+  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryResponse.document)
 }
 
-// -------------------------------------------------------------------
-
-// RollbackRequest
-
-// string database = 1;
-inline void RollbackRequest::clear_database() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.ClearToEmpty();
-}
-inline const std::string& RollbackRequest::database() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RollbackRequest.database)
-  return _internal_database();
+// .google.protobuf.Timestamp read_time = 3;
+inline bool RunQueryResponse::has_read_time() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.read_time_ != nullptr);
+  return value;
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void RollbackRequest::set_database(Arg_&& arg,
-                                                     Args_... args) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.RollbackRequest.database)
+inline const ::google::protobuf::Timestamp& RunQueryResponse::_internal_read_time() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::google::protobuf::Timestamp* p = _impl_.read_time_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
 }
-inline std::string* RollbackRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_database();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RollbackRequest.database)
-  return _s;
+inline const ::google::protobuf::Timestamp& RunQueryResponse::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.read_time)
+  return _internal_read_time();
 }
-inline const std::string& RollbackRequest::_internal_database() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.database_.Get();
+inline void RunQueryResponse::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
+  }
+  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryResponse.read_time)
 }
-inline void RollbackRequest::_internal_set_database(const std::string& value) {
+inline ::google::protobuf::Timestamp* RunQueryResponse::release_read_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.database_.Set(value, GetArena());
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::google::protobuf::Timestamp* released = _impl_.read_time_;
+  _impl_.read_time_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
 }
-inline std::string* RollbackRequest::_internal_mutable_database() {
+inline ::google::protobuf::Timestamp* RunQueryResponse::unsafe_arena_release_read_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  return _impl_.database_.Mutable( GetArena());
+  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryResponse.read_time)
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::google::protobuf::Timestamp* temp = _impl_.read_time_;
+  _impl_.read_time_ = nullptr;
+  return temp;
 }
-inline std::string* RollbackRequest::release_database() {
+inline ::google::protobuf::Timestamp* RunQueryResponse::_internal_mutable_read_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RollbackRequest.database)
-  return _impl_.database_.Release();
+  _impl_._has_bits_[0] |= 0x00000002u;
+  if (_impl_.read_time_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
+    _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(p);
+  }
+  return _impl_.read_time_;
 }
-inline void RollbackRequest::set_allocated_database(std::string* value) {
+inline ::google::protobuf::Timestamp* RunQueryResponse::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryResponse.read_time)
+  return _msg;
+}
+inline void RunQueryResponse::set_allocated_read_time(::google::protobuf::Timestamp* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.database_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.database_.IsDefault()) {
-          _impl_.database_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RollbackRequest.database)
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+
+  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryResponse.read_time)
 }
 
-// bytes transaction = 2;
-inline void RollbackRequest::clear_transaction() {
+// int32 skipped_results = 4;
+inline void RunQueryResponse::clear_skipped_results() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.transaction_.ClearToEmpty();
-}
-inline const std::string& RollbackRequest::transaction() const
-    ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RollbackRequest.transaction)
-  return _internal_transaction();
+  _impl_.skipped_results_ = 0;
 }
-template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void RollbackRequest::set_transaction(Arg_&& arg,
-                                                     Args_... args) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.RollbackRequest.transaction)
+inline ::int32_t RunQueryResponse::skipped_results() const {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.skipped_results)
+  return _internal_skipped_results();
 }
-inline std::string* RollbackRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RollbackRequest.transaction)
-  return _s;
+inline void RunQueryResponse::set_skipped_results(::int32_t value) {
+  _internal_set_skipped_results(value);
+  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryResponse.skipped_results)
 }
-inline const std::string& RollbackRequest::_internal_transaction() const {
+inline ::int32_t RunQueryResponse::_internal_skipped_results() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.transaction_.Get();
-}
-inline void RollbackRequest::_internal_set_transaction(const std::string& value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.transaction_.Set(value, GetArena());
+  return _impl_.skipped_results_;
 }
-inline std::string* RollbackRequest::_internal_mutable_transaction() {
+inline void RunQueryResponse::_internal_set_skipped_results(::int32_t value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  return _impl_.transaction_.Mutable( GetArena());
-}
-inline std::string* RollbackRequest::release_transaction() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RollbackRequest.transaction)
-  return _impl_.transaction_.Release();
-}
-inline void RollbackRequest::set_allocated_transaction(std::string* value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.transaction_.SetAllocated(value, GetArena());
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.transaction_.IsDefault()) {
-          _impl_.transaction_.Set("", GetArena());
-        }
-  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RollbackRequest.transaction)
+  _impl_.skipped_results_ = value;
 }
 
 // -------------------------------------------------------------------
 
-// RunQueryRequest
+// ExecutePipelineRequest
 
-// string parent = 1;
-inline void RunQueryRequest::clear_parent() {
+// string database = 1 [(.google.api.field_behavior) = REQUIRED];
+inline void ExecutePipelineRequest::clear_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.parent_.ClearToEmpty();
+  _impl_.database_.ClearToEmpty();
 }
-inline const std::string& RunQueryRequest::parent() const
+inline const std::string& ExecutePipelineRequest::database() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.parent)
-  return _internal_parent();
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineRequest.database)
+  return _internal_database();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void RunQueryRequest::set_parent(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void ExecutePipelineRequest::set_database(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  _impl_.parent_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryRequest.parent)
+  _impl_.database_.Set(static_cast<Arg_&&>(arg), args..., GetArena());
+  // @@protoc_insertion_point(field_set:google.firestore.v1.ExecutePipelineRequest.database)
 }
-inline std::string* RunQueryRequest::mutable_parent() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  std::string* _s = _internal_mutable_parent();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.parent)
+inline std::string* ExecutePipelineRequest::mutable_database() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  std::string* _s = _internal_mutable_database();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineRequest.database)
   return _s;
 }
-inline const std::string& RunQueryRequest::_internal_parent() const {
+inline const std::string& ExecutePipelineRequest::_internal_database() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.parent_.Get();
+  return _impl_.database_.Get();
 }
-inline void RunQueryRequest::_internal_set_parent(const std::string& value) {
+inline void ExecutePipelineRequest::_internal_set_database(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  _impl_.parent_.Set(value, GetArena());
+  _impl_.database_.Set(value, GetArena());
 }
-inline std::string* RunQueryRequest::_internal_mutable_parent() {
+inline std::string* ExecutePipelineRequest::_internal_mutable_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
-  return _impl_.parent_.Mutable( GetArena());
+  return _impl_.database_.Mutable( GetArena());
 }
-inline std::string* RunQueryRequest::release_parent() {
+inline std::string* ExecutePipelineRequest::release_database() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.parent)
-  return _impl_.parent_.Release();
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineRequest.database)
+  return _impl_.database_.Release();
 }
-inline void RunQueryRequest::set_allocated_parent(std::string* value) {
+inline void ExecutePipelineRequest::set_allocated_database(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.parent_.SetAllocated(value, GetArena());
+  _impl_.database_.SetAllocated(value, GetArena());
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-        if (_impl_.parent_.IsDefault()) {
-          _impl_.parent_.Set("", GetArena());
+        if (_impl_.database_.IsDefault()) {
+          _impl_.database_.Set("", GetArena());
         }
   #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryRequest.parent)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineRequest.database)
 }
 
-// .google.firestore.v1.StructuredQuery structured_query = 2;
-inline bool RunQueryRequest::has_structured_query() const {
-  return query_type_case() == kStructuredQuery;
+// .google.firestore.v1.StructuredPipeline structured_pipeline = 2;
+inline bool ExecutePipelineRequest::has_structured_pipeline() const {
+  return pipeline_type_case() == kStructuredPipeline;
 }
-inline bool RunQueryRequest::_internal_has_structured_query() const {
-  return query_type_case() == kStructuredQuery;
+inline bool ExecutePipelineRequest::_internal_has_structured_pipeline() const {
+  return pipeline_type_case() == kStructuredPipeline;
 }
-inline void RunQueryRequest::set_has_structured_query() {
-  _impl_._oneof_case_[0] = kStructuredQuery;
+inline void ExecutePipelineRequest::set_has_structured_pipeline() {
+  _impl_._oneof_case_[0] = kStructuredPipeline;
 }
-inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::release_structured_query() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.structured_query)
-  if (query_type_case() == kStructuredQuery) {
-    clear_has_query_type();
-    auto* temp = _impl_.query_type_.structured_query_;
+inline ::google::firestore::v1::StructuredPipeline* ExecutePipelineRequest::release_structured_pipeline() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineRequest.structured_pipeline)
+  if (pipeline_type_case() == kStructuredPipeline) {
+    clear_has_pipeline_type();
+    auto* temp = _impl_.pipeline_type_.structured_pipeline_;
     if (GetArena() != nullptr) {
       temp = ::google::protobuf::internal::DuplicateIfNonNull(temp);
     }
-    _impl_.query_type_.structured_query_ = nullptr;
+    _impl_.pipeline_type_.structured_pipeline_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline const ::google::firestore::v1::StructuredQuery& RunQueryRequest::_internal_structured_query() const {
-  return query_type_case() == kStructuredQuery ? *_impl_.query_type_.structured_query_ : reinterpret_cast<::google::firestore::v1::StructuredQuery&>(::google::firestore::v1::_StructuredQuery_default_instance_);
+inline const ::google::firestore::v1::StructuredPipeline& ExecutePipelineRequest::_internal_structured_pipeline() const {
+  return pipeline_type_case() == kStructuredPipeline ? *_impl_.pipeline_type_.structured_pipeline_ : reinterpret_cast<::google::firestore::v1::StructuredPipeline&>(::google::firestore::v1::_StructuredPipeline_default_instance_);
 }
-inline const ::google::firestore::v1::StructuredQuery& RunQueryRequest::structured_query() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.structured_query)
-  return _internal_structured_query();
+inline const ::google::firestore::v1::StructuredPipeline& ExecutePipelineRequest::structured_pipeline() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineRequest.structured_pipeline)
+  return _internal_structured_pipeline();
 }
-inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::unsafe_arena_release_structured_query() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.RunQueryRequest.structured_query)
-  if (query_type_case() == kStructuredQuery) {
-    clear_has_query_type();
-    auto* temp = _impl_.query_type_.structured_query_;
-    _impl_.query_type_.structured_query_ = nullptr;
+inline ::google::firestore::v1::StructuredPipeline* ExecutePipelineRequest::unsafe_arena_release_structured_pipeline() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.ExecutePipelineRequest.structured_pipeline)
+  if (pipeline_type_case() == kStructuredPipeline) {
+    clear_has_pipeline_type();
+    auto* temp = _impl_.pipeline_type_.structured_pipeline_;
+    _impl_.pipeline_type_.structured_pipeline_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline void RunQueryRequest::unsafe_arena_set_allocated_structured_query(::google::firestore::v1::StructuredQuery* value) {
+inline void ExecutePipelineRequest::unsafe_arena_set_allocated_structured_pipeline(::google::firestore::v1::StructuredPipeline* value) {
   // We rely on the oneof clear method to free the earlier contents
   // of this oneof. We can directly use the pointer we're given to
   // set the new value.
-  clear_query_type();
+  clear_pipeline_type();
   if (value) {
-    set_has_structured_query();
-    _impl_.query_type_.structured_query_ = value;
+    set_has_structured_pipeline();
+    _impl_.pipeline_type_.structured_pipeline_ = value;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryRequest.structured_query)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.ExecutePipelineRequest.structured_pipeline)
 }
-inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::_internal_mutable_structured_query() {
-  if (query_type_case() != kStructuredQuery) {
-    clear_query_type();
-    set_has_structured_query();
-    _impl_.query_type_.structured_query_ = CreateMaybeMessage<::google::firestore::v1::StructuredQuery>(GetArena());
+inline ::google::firestore::v1::StructuredPipeline* ExecutePipelineRequest::_internal_mutable_structured_pipeline() {
+  if (pipeline_type_case() != kStructuredPipeline) {
+    clear_pipeline_type();
+    set_has_structured_pipeline();
+    _impl_.pipeline_type_.structured_pipeline_ = CreateMaybeMessage<::google::firestore::v1::StructuredPipeline>(GetArena());
   }
-  return _impl_.query_type_.structured_query_;
+  return _impl_.pipeline_type_.structured_pipeline_;
 }
-inline ::google::firestore::v1::StructuredQuery* RunQueryRequest::mutable_structured_query() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::StructuredQuery* _msg = _internal_mutable_structured_query();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.structured_query)
+inline ::google::firestore::v1::StructuredPipeline* ExecutePipelineRequest::mutable_structured_pipeline() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::StructuredPipeline* _msg = _internal_mutable_structured_pipeline();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineRequest.structured_pipeline)
   return _msg;
 }
 
 // bytes transaction = 5;
-inline bool RunQueryRequest::has_transaction() const {
+inline bool ExecutePipelineRequest::has_transaction() const {
   return consistency_selector_case() == kTransaction;
 }
-inline void RunQueryRequest::set_has_transaction() {
+inline void ExecutePipelineRequest::set_has_transaction() {
   _impl_._oneof_case_[1] = kTransaction;
 }
-inline void RunQueryRequest::clear_transaction() {
+inline void ExecutePipelineRequest::clear_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (consistency_selector_case() == kTransaction) {
     _impl_.consistency_selector_.transaction_.Destroy();
     clear_has_consistency_selector();
   }
 }
-inline const std::string& RunQueryRequest::transaction() const
+inline const std::string& ExecutePipelineRequest::transaction() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.transaction)
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineRequest.transaction)
   return _internal_transaction();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void RunQueryRequest::set_transaction(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void ExecutePipelineRequest::set_transaction(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (consistency_selector_case() != kTransaction) {
@@ -10197,21 +11364,21 @@ inline PROTOBUF_ALWAYS_INLINE void RunQueryRequest::set_transaction(Arg_&& arg,
     _impl_.consistency_selector_.transaction_.InitDefault();
   }
   _impl_.consistency_selector_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryRequest.transaction)
+  // @@protoc_insertion_point(field_set:google.firestore.v1.ExecutePipelineRequest.transaction)
 }
-inline std::string* RunQueryRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline std::string* ExecutePipelineRequest::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
   std::string* _s = _internal_mutable_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.transaction)
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineRequest.transaction)
   return _s;
 }
-inline const std::string& RunQueryRequest::_internal_transaction() const {
+inline const std::string& ExecutePipelineRequest::_internal_transaction() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
   if (consistency_selector_case() != kTransaction) {
     return ::google::protobuf::internal::GetEmptyStringAlreadyInited();
   }
   return _impl_.consistency_selector_.transaction_.Get();
 }
-inline void RunQueryRequest::_internal_set_transaction(const std::string& value) {
+inline void ExecutePipelineRequest::_internal_set_transaction(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (consistency_selector_case() != kTransaction) {
     clear_consistency_selector();
@@ -10221,7 +11388,7 @@ inline void RunQueryRequest::_internal_set_transaction(const std::string& value)
   }
   _impl_.consistency_selector_.transaction_.Set(value, GetArena());
 }
-inline std::string* RunQueryRequest::_internal_mutable_transaction() {
+inline std::string* ExecutePipelineRequest::_internal_mutable_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (consistency_selector_case() != kTransaction) {
     clear_consistency_selector();
@@ -10231,16 +11398,16 @@ inline std::string* RunQueryRequest::_internal_mutable_transaction() {
   }
   return _impl_.consistency_selector_.transaction_.Mutable( GetArena());
 }
-inline std::string* RunQueryRequest::release_transaction() {
+inline std::string* ExecutePipelineRequest::release_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.transaction)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineRequest.transaction)
   if (consistency_selector_case() != kTransaction) {
     return nullptr;
   }
   clear_has_consistency_selector();
   return _impl_.consistency_selector_.transaction_.Release();
 }
-inline void RunQueryRequest::set_allocated_transaction(std::string* value) {
+inline void ExecutePipelineRequest::set_allocated_transaction(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (has_consistency_selector()) {
     clear_consistency_selector();
@@ -10249,21 +11416,21 @@ inline void RunQueryRequest::set_allocated_transaction(std::string* value) {
     set_has_transaction();
     _impl_.consistency_selector_.transaction_.InitAllocated(value, GetArena());
   }
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryRequest.transaction)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineRequest.transaction)
 }
 
 // .google.firestore.v1.TransactionOptions new_transaction = 6;
-inline bool RunQueryRequest::has_new_transaction() const {
+inline bool ExecutePipelineRequest::has_new_transaction() const {
   return consistency_selector_case() == kNewTransaction;
 }
-inline bool RunQueryRequest::_internal_has_new_transaction() const {
+inline bool ExecutePipelineRequest::_internal_has_new_transaction() const {
   return consistency_selector_case() == kNewTransaction;
 }
-inline void RunQueryRequest::set_has_new_transaction() {
+inline void ExecutePipelineRequest::set_has_new_transaction() {
   _impl_._oneof_case_[1] = kNewTransaction;
 }
-inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::release_new_transaction() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.new_transaction)
+inline ::google::firestore::v1::TransactionOptions* ExecutePipelineRequest::release_new_transaction() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineRequest.new_transaction)
   if (consistency_selector_case() == kNewTransaction) {
     clear_has_consistency_selector();
     auto* temp = _impl_.consistency_selector_.new_transaction_;
@@ -10276,15 +11443,15 @@ inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::release_new
     return nullptr;
   }
 }
-inline const ::google::firestore::v1::TransactionOptions& RunQueryRequest::_internal_new_transaction() const {
+inline const ::google::firestore::v1::TransactionOptions& ExecutePipelineRequest::_internal_new_transaction() const {
   return consistency_selector_case() == kNewTransaction ? *_impl_.consistency_selector_.new_transaction_ : reinterpret_cast<::google::firestore::v1::TransactionOptions&>(::google::firestore::v1::_TransactionOptions_default_instance_);
 }
-inline const ::google::firestore::v1::TransactionOptions& RunQueryRequest::new_transaction() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.new_transaction)
+inline const ::google::firestore::v1::TransactionOptions& ExecutePipelineRequest::new_transaction() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineRequest.new_transaction)
   return _internal_new_transaction();
 }
-inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::unsafe_arena_release_new_transaction() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.RunQueryRequest.new_transaction)
+inline ::google::firestore::v1::TransactionOptions* ExecutePipelineRequest::unsafe_arena_release_new_transaction() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.ExecutePipelineRequest.new_transaction)
   if (consistency_selector_case() == kNewTransaction) {
     clear_has_consistency_selector();
     auto* temp = _impl_.consistency_selector_.new_transaction_;
@@ -10294,7 +11461,7 @@ inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::unsafe_aren
     return nullptr;
   }
 }
-inline void RunQueryRequest::unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value) {
+inline void ExecutePipelineRequest::unsafe_arena_set_allocated_new_transaction(::google::firestore::v1::TransactionOptions* value) {
   // We rely on the oneof clear method to free the earlier contents
   // of this oneof. We can directly use the pointer we're given to
   // set the new value.
@@ -10303,9 +11470,9 @@ inline void RunQueryRequest::unsafe_arena_set_allocated_new_transaction(::google
     set_has_new_transaction();
     _impl_.consistency_selector_.new_transaction_ = value;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryRequest.new_transaction)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.ExecutePipelineRequest.new_transaction)
 }
-inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::_internal_mutable_new_transaction() {
+inline ::google::firestore::v1::TransactionOptions* ExecutePipelineRequest::_internal_mutable_new_transaction() {
   if (consistency_selector_case() != kNewTransaction) {
     clear_consistency_selector();
     set_has_new_transaction();
@@ -10313,24 +11480,24 @@ inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::_internal_m
   }
   return _impl_.consistency_selector_.new_transaction_;
 }
-inline ::google::firestore::v1::TransactionOptions* RunQueryRequest::mutable_new_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline ::google::firestore::v1::TransactionOptions* ExecutePipelineRequest::mutable_new_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
   ::google::firestore::v1::TransactionOptions* _msg = _internal_mutable_new_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.new_transaction)
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineRequest.new_transaction)
   return _msg;
 }
 
 // .google.protobuf.Timestamp read_time = 7;
-inline bool RunQueryRequest::has_read_time() const {
+inline bool ExecutePipelineRequest::has_read_time() const {
   return consistency_selector_case() == kReadTime;
 }
-inline bool RunQueryRequest::_internal_has_read_time() const {
+inline bool ExecutePipelineRequest::_internal_has_read_time() const {
   return consistency_selector_case() == kReadTime;
 }
-inline void RunQueryRequest::set_has_read_time() {
+inline void ExecutePipelineRequest::set_has_read_time() {
   _impl_._oneof_case_[1] = kReadTime;
 }
-inline ::google::protobuf::Timestamp* RunQueryRequest::release_read_time() {
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryRequest.read_time)
+inline ::google::protobuf::Timestamp* ExecutePipelineRequest::release_read_time() {
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineRequest.read_time)
   if (consistency_selector_case() == kReadTime) {
     clear_has_consistency_selector();
     auto* temp = _impl_.consistency_selector_.read_time_;
@@ -10343,15 +11510,15 @@ inline ::google::protobuf::Timestamp* RunQueryRequest::release_read_time() {
     return nullptr;
   }
 }
-inline const ::google::protobuf::Timestamp& RunQueryRequest::_internal_read_time() const {
+inline const ::google::protobuf::Timestamp& ExecutePipelineRequest::_internal_read_time() const {
   return consistency_selector_case() == kReadTime ? *_impl_.consistency_selector_.read_time_ : reinterpret_cast<::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
 }
-inline const ::google::protobuf::Timestamp& RunQueryRequest::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryRequest.read_time)
+inline const ::google::protobuf::Timestamp& ExecutePipelineRequest::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineRequest.read_time)
   return _internal_read_time();
 }
-inline ::google::protobuf::Timestamp* RunQueryRequest::unsafe_arena_release_read_time() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.RunQueryRequest.read_time)
+inline ::google::protobuf::Timestamp* ExecutePipelineRequest::unsafe_arena_release_read_time() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:google.firestore.v1.ExecutePipelineRequest.read_time)
   if (consistency_selector_case() == kReadTime) {
     clear_has_consistency_selector();
     auto* temp = _impl_.consistency_selector_.read_time_;
@@ -10361,7 +11528,7 @@ inline ::google::protobuf::Timestamp* RunQueryRequest::unsafe_arena_release_read
     return nullptr;
   }
 }
-inline void RunQueryRequest::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
+inline void ExecutePipelineRequest::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
   // We rely on the oneof clear method to free the earlier contents
   // of this oneof. We can directly use the pointer we're given to
   // set the new value.
@@ -10370,9 +11537,9 @@ inline void RunQueryRequest::unsafe_arena_set_allocated_read_time(::google::prot
     set_has_read_time();
     _impl_.consistency_selector_.read_time_ = value;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryRequest.read_time)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.ExecutePipelineRequest.read_time)
 }
-inline ::google::protobuf::Timestamp* RunQueryRequest::_internal_mutable_read_time() {
+inline ::google::protobuf::Timestamp* ExecutePipelineRequest::_internal_mutable_read_time() {
   if (consistency_selector_case() != kReadTime) {
     clear_consistency_selector();
     set_has_read_time();
@@ -10380,77 +11547,77 @@ inline ::google::protobuf::Timestamp* RunQueryRequest::_internal_mutable_read_ti
   }
   return _impl_.consistency_selector_.read_time_;
 }
-inline ::google::protobuf::Timestamp* RunQueryRequest::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline ::google::protobuf::Timestamp* ExecutePipelineRequest::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
   ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryRequest.read_time)
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineRequest.read_time)
   return _msg;
 }
 
-inline bool RunQueryRequest::has_query_type() const {
-  return query_type_case() != QUERY_TYPE_NOT_SET;
+inline bool ExecutePipelineRequest::has_pipeline_type() const {
+  return pipeline_type_case() != PIPELINE_TYPE_NOT_SET;
 }
-inline void RunQueryRequest::clear_has_query_type() {
-  _impl_._oneof_case_[0] = QUERY_TYPE_NOT_SET;
+inline void ExecutePipelineRequest::clear_has_pipeline_type() {
+  _impl_._oneof_case_[0] = PIPELINE_TYPE_NOT_SET;
 }
-inline bool RunQueryRequest::has_consistency_selector() const {
+inline bool ExecutePipelineRequest::has_consistency_selector() const {
   return consistency_selector_case() != CONSISTENCY_SELECTOR_NOT_SET;
 }
-inline void RunQueryRequest::clear_has_consistency_selector() {
+inline void ExecutePipelineRequest::clear_has_consistency_selector() {
   _impl_._oneof_case_[1] = CONSISTENCY_SELECTOR_NOT_SET;
 }
-inline RunQueryRequest::QueryTypeCase RunQueryRequest::query_type_case() const {
-  return RunQueryRequest::QueryTypeCase(_impl_._oneof_case_[0]);
+inline ExecutePipelineRequest::PipelineTypeCase ExecutePipelineRequest::pipeline_type_case() const {
+  return ExecutePipelineRequest::PipelineTypeCase(_impl_._oneof_case_[0]);
 }
-inline RunQueryRequest::ConsistencySelectorCase RunQueryRequest::consistency_selector_case() const {
-  return RunQueryRequest::ConsistencySelectorCase(_impl_._oneof_case_[1]);
+inline ExecutePipelineRequest::ConsistencySelectorCase ExecutePipelineRequest::consistency_selector_case() const {
+  return ExecutePipelineRequest::ConsistencySelectorCase(_impl_._oneof_case_[1]);
 }
 // -------------------------------------------------------------------
 
-// RunQueryResponse
+// ExecutePipelineResponse
 
-// bytes transaction = 2;
-inline void RunQueryResponse::clear_transaction() {
+// bytes transaction = 1;
+inline void ExecutePipelineResponse::clear_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_.transaction_.ClearToEmpty();
 }
-inline const std::string& RunQueryResponse::transaction() const
+inline const std::string& ExecutePipelineResponse::transaction() const
     ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.transaction)
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineResponse.transaction)
   return _internal_transaction();
 }
 template <typename Arg_, typename... Args_>
-inline PROTOBUF_ALWAYS_INLINE void RunQueryResponse::set_transaction(Arg_&& arg,
+inline PROTOBUF_ALWAYS_INLINE void ExecutePipelineResponse::set_transaction(Arg_&& arg,
                                                      Args_... args) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   _impl_.transaction_.SetBytes(static_cast<Arg_&&>(arg), args..., GetArena());
-  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryResponse.transaction)
+  // @@protoc_insertion_point(field_set:google.firestore.v1.ExecutePipelineResponse.transaction)
 }
-inline std::string* RunQueryResponse::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+inline std::string* ExecutePipelineResponse::mutable_transaction() ABSL_ATTRIBUTE_LIFETIME_BOUND {
   std::string* _s = _internal_mutable_transaction();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryResponse.transaction)
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineResponse.transaction)
   return _s;
 }
-inline const std::string& RunQueryResponse::_internal_transaction() const {
+inline const std::string& ExecutePipelineResponse::_internal_transaction() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
   return _impl_.transaction_.Get();
 }
-inline void RunQueryResponse::_internal_set_transaction(const std::string& value) {
+inline void ExecutePipelineResponse::_internal_set_transaction(const std::string& value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   _impl_.transaction_.Set(value, GetArena());
 }
-inline std::string* RunQueryResponse::_internal_mutable_transaction() {
+inline std::string* ExecutePipelineResponse::_internal_mutable_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   ;
   return _impl_.transaction_.Mutable( GetArena());
 }
-inline std::string* RunQueryResponse::release_transaction() {
+inline std::string* ExecutePipelineResponse::release_transaction() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryResponse.transaction)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineResponse.transaction)
   return _impl_.transaction_.Release();
 }
-inline void RunQueryResponse::set_allocated_transaction(std::string* value) {
+inline void ExecutePipelineResponse::set_allocated_transaction(std::string* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_.transaction_.SetAllocated(value, GetArena());
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
@@ -10458,43 +11625,88 @@ inline void RunQueryResponse::set_allocated_transaction(std::string* value) {
           _impl_.transaction_.Set("", GetArena());
         }
   #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryResponse.transaction)
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineResponse.transaction)
 }
 
-// .google.firestore.v1.Document document = 1;
-inline bool RunQueryResponse::has_document() const {
+// repeated .google.firestore.v1.Document results = 2;
+inline int ExecutePipelineResponse::_internal_results_size() const {
+  return _internal_results().size();
+}
+inline int ExecutePipelineResponse::results_size() const {
+  return _internal_results_size();
+}
+inline ::google::firestore::v1::Document* ExecutePipelineResponse::mutable_results(int index)
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineResponse.results)
+  return _internal_mutable_results()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>* ExecutePipelineResponse::mutable_results()
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_list:google.firestore.v1.ExecutePipelineResponse.results)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_results();
+}
+inline const ::google::firestore::v1::Document& ExecutePipelineResponse::results(int index) const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineResponse.results)
+  return _internal_results().Get(index);
+}
+inline ::google::firestore::v1::Document* ExecutePipelineResponse::add_results() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::google::firestore::v1::Document* _add = _internal_mutable_results()->Add();
+  // @@protoc_insertion_point(field_add:google.firestore.v1.ExecutePipelineResponse.results)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>& ExecutePipelineResponse::results() const
+    ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_list:google.firestore.v1.ExecutePipelineResponse.results)
+  return _internal_results();
+}
+inline const ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>&
+ExecutePipelineResponse::_internal_results() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.results_;
+}
+inline ::google::protobuf::RepeatedPtrField<::google::firestore::v1::Document>*
+ExecutePipelineResponse::_internal_mutable_results() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.results_;
+}
+
+// .google.protobuf.Timestamp execution_time = 3;
+inline bool ExecutePipelineResponse::has_execution_time() const {
   bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.document_ != nullptr);
+  PROTOBUF_ASSUME(!value || _impl_.execution_time_ != nullptr);
   return value;
 }
-inline const ::google::firestore::v1::Document& RunQueryResponse::_internal_document() const {
+inline const ::google::protobuf::Timestamp& ExecutePipelineResponse::_internal_execution_time() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::firestore::v1::Document* p = _impl_.document_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Document&>(::google::firestore::v1::_Document_default_instance_);
+  const ::google::protobuf::Timestamp* p = _impl_.execution_time_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
 }
-inline const ::google::firestore::v1::Document& RunQueryResponse::document() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.document)
-  return _internal_document();
+inline const ::google::protobuf::Timestamp& ExecutePipelineResponse::execution_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineResponse.execution_time)
+  return _internal_execution_time();
 }
-inline void RunQueryResponse::unsafe_arena_set_allocated_document(::google::firestore::v1::Document* value) {
+inline void ExecutePipelineResponse::unsafe_arena_set_allocated_execution_time(::google::protobuf::Timestamp* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.execution_time_);
   }
-  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
+  _impl_.execution_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
   if (value != nullptr) {
     _impl_._has_bits_[0] |= 0x00000001u;
   } else {
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryResponse.document)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.ExecutePipelineResponse.execution_time)
 }
-inline ::google::firestore::v1::Document* RunQueryResponse::release_document() {
+inline ::google::protobuf::Timestamp* ExecutePipelineResponse::release_execution_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Document* released = _impl_.document_;
-  _impl_.document_ = nullptr;
+  ::google::protobuf::Timestamp* released = _impl_.execution_time_;
+  _impl_.execution_time_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -10508,34 +11720,34 @@ inline ::google::firestore::v1::Document* RunQueryResponse::release_document() {
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::firestore::v1::Document* RunQueryResponse::unsafe_arena_release_document() {
+inline ::google::protobuf::Timestamp* ExecutePipelineResponse::unsafe_arena_release_execution_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryResponse.document)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineResponse.execution_time)
 
   _impl_._has_bits_[0] &= ~0x00000001u;
-  ::google::firestore::v1::Document* temp = _impl_.document_;
-  _impl_.document_ = nullptr;
+  ::google::protobuf::Timestamp* temp = _impl_.execution_time_;
+  _impl_.execution_time_ = nullptr;
   return temp;
 }
-inline ::google::firestore::v1::Document* RunQueryResponse::_internal_mutable_document() {
+inline ::google::protobuf::Timestamp* ExecutePipelineResponse::_internal_mutable_execution_time() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_._has_bits_[0] |= 0x00000001u;
-  if (_impl_.document_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::firestore::v1::Document>(GetArena());
-    _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(p);
+  if (_impl_.execution_time_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
+    _impl_.execution_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(p);
   }
-  return _impl_.document_;
+  return _impl_.execution_time_;
 }
-inline ::google::firestore::v1::Document* RunQueryResponse::mutable_document() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::firestore::v1::Document* _msg = _internal_mutable_document();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryResponse.document)
+inline ::google::protobuf::Timestamp* ExecutePipelineResponse::mutable_execution_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::protobuf::Timestamp* _msg = _internal_mutable_execution_time();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineResponse.execution_time)
   return _msg;
 }
-inline void RunQueryResponse::set_allocated_document(::google::firestore::v1::Document* value) {
+inline void ExecutePipelineResponse::set_allocated_execution_time(::google::protobuf::Timestamp* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.document_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.execution_time_);
   }
 
   if (value != nullptr) {
@@ -10548,44 +11760,44 @@ inline void RunQueryResponse::set_allocated_document(::google::firestore::v1::Do
     _impl_._has_bits_[0] &= ~0x00000001u;
   }
 
-  _impl_.document_ = reinterpret_cast<::google::firestore::v1::Document*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryResponse.document)
+  _impl_.execution_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineResponse.execution_time)
 }
 
-// .google.protobuf.Timestamp read_time = 3;
-inline bool RunQueryResponse::has_read_time() const {
+// .google.firestore.v1.ExplainStats explain_stats = 4;
+inline bool ExecutePipelineResponse::has_explain_stats() const {
   bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
-  PROTOBUF_ASSUME(!value || _impl_.read_time_ != nullptr);
+  PROTOBUF_ASSUME(!value || _impl_.explain_stats_ != nullptr);
   return value;
 }
-inline const ::google::protobuf::Timestamp& RunQueryResponse::_internal_read_time() const {
+inline const ::google::firestore::v1::ExplainStats& ExecutePipelineResponse::_internal_explain_stats() const {
   PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  const ::google::protobuf::Timestamp* p = _impl_.read_time_;
-  return p != nullptr ? *p : reinterpret_cast<const ::google::protobuf::Timestamp&>(::google::protobuf::_Timestamp_default_instance_);
+  const ::google::firestore::v1::ExplainStats* p = _impl_.explain_stats_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::ExplainStats&>(::google::firestore::v1::_ExplainStats_default_instance_);
 }
-inline const ::google::protobuf::Timestamp& RunQueryResponse::read_time() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.read_time)
-  return _internal_read_time();
+inline const ::google::firestore::v1::ExplainStats& ExecutePipelineResponse::explain_stats() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.ExecutePipelineResponse.explain_stats)
+  return _internal_explain_stats();
 }
-inline void RunQueryResponse::unsafe_arena_set_allocated_read_time(::google::protobuf::Timestamp* value) {
+inline void ExecutePipelineResponse::unsafe_arena_set_allocated_explain_stats(::google::firestore::v1::ExplainStats* value) {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (GetArena() == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.explain_stats_);
   }
-  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
+  _impl_.explain_stats_ = reinterpret_cast<::google::firestore::v1::ExplainStats*>(value);
   if (value != nullptr) {
     _impl_._has_bits_[0] |= 0x00000002u;
   } else {
     _impl_._has_bits_[0] &= ~0x00000002u;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.RunQueryResponse.read_time)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.ExecutePipelineResponse.explain_stats)
 }
-inline ::google::protobuf::Timestamp* RunQueryResponse::release_read_time() {
+inline ::google::firestore::v1::ExplainStats* ExecutePipelineResponse::release_explain_stats() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
 
   _impl_._has_bits_[0] &= ~0x00000002u;
-  ::google::protobuf::Timestamp* released = _impl_.read_time_;
-  _impl_.read_time_ = nullptr;
+  ::google::firestore::v1::ExplainStats* released = _impl_.explain_stats_;
+  _impl_.explain_stats_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
   released = ::google::protobuf::internal::DuplicateIfNonNull(released);
@@ -10599,34 +11811,34 @@ inline ::google::protobuf::Timestamp* RunQueryResponse::release_read_time() {
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return released;
 }
-inline ::google::protobuf::Timestamp* RunQueryResponse::unsafe_arena_release_read_time() {
+inline ::google::firestore::v1::ExplainStats* ExecutePipelineResponse::unsafe_arena_release_explain_stats() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  // @@protoc_insertion_point(field_release:google.firestore.v1.RunQueryResponse.read_time)
+  // @@protoc_insertion_point(field_release:google.firestore.v1.ExecutePipelineResponse.explain_stats)
 
   _impl_._has_bits_[0] &= ~0x00000002u;
-  ::google::protobuf::Timestamp* temp = _impl_.read_time_;
-  _impl_.read_time_ = nullptr;
+  ::google::firestore::v1::ExplainStats* temp = _impl_.explain_stats_;
+  _impl_.explain_stats_ = nullptr;
   return temp;
 }
-inline ::google::protobuf::Timestamp* RunQueryResponse::_internal_mutable_read_time() {
+inline ::google::firestore::v1::ExplainStats* ExecutePipelineResponse::_internal_mutable_explain_stats() {
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   _impl_._has_bits_[0] |= 0x00000002u;
-  if (_impl_.read_time_ == nullptr) {
-    auto* p = CreateMaybeMessage<::google::protobuf::Timestamp>(GetArena());
-    _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(p);
+  if (_impl_.explain_stats_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::ExplainStats>(GetArena());
+    _impl_.explain_stats_ = reinterpret_cast<::google::firestore::v1::ExplainStats*>(p);
   }
-  return _impl_.read_time_;
+  return _impl_.explain_stats_;
 }
-inline ::google::protobuf::Timestamp* RunQueryResponse::mutable_read_time() ABSL_ATTRIBUTE_LIFETIME_BOUND {
-  ::google::protobuf::Timestamp* _msg = _internal_mutable_read_time();
-  // @@protoc_insertion_point(field_mutable:google.firestore.v1.RunQueryResponse.read_time)
+inline ::google::firestore::v1::ExplainStats* ExecutePipelineResponse::mutable_explain_stats() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::ExplainStats* _msg = _internal_mutable_explain_stats();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.ExecutePipelineResponse.explain_stats)
   return _msg;
 }
-inline void RunQueryResponse::set_allocated_read_time(::google::protobuf::Timestamp* value) {
+inline void ExecutePipelineResponse::set_allocated_explain_stats(::google::firestore::v1::ExplainStats* value) {
   ::google::protobuf::Arena* message_arena = GetArena();
   PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
   if (message_arena == nullptr) {
-    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.read_time_);
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.explain_stats_);
   }
 
   if (value != nullptr) {
@@ -10639,31 +11851,8 @@ inline void RunQueryResponse::set_allocated_read_time(::google::protobuf::Timest
     _impl_._has_bits_[0] &= ~0x00000002u;
   }
 
-  _impl_.read_time_ = reinterpret_cast<::google::protobuf::Timestamp*>(value);
-  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.RunQueryResponse.read_time)
-}
-
-// int32 skipped_results = 4;
-inline void RunQueryResponse::clear_skipped_results() {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  _impl_.skipped_results_ = 0;
-}
-inline ::int32_t RunQueryResponse::skipped_results() const {
-  // @@protoc_insertion_point(field_get:google.firestore.v1.RunQueryResponse.skipped_results)
-  return _internal_skipped_results();
-}
-inline void RunQueryResponse::set_skipped_results(::int32_t value) {
-  _internal_set_skipped_results(value);
-  // @@protoc_insertion_point(field_set:google.firestore.v1.RunQueryResponse.skipped_results)
-}
-inline ::int32_t RunQueryResponse::_internal_skipped_results() const {
-  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
-  return _impl_.skipped_results_;
-}
-inline void RunQueryResponse::_internal_set_skipped_results(::int32_t value) {
-  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
-  ;
-  _impl_.skipped_results_ = value;
+  _impl_.explain_stats_ = reinterpret_cast<::google::firestore::v1::ExplainStats*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.ExecutePipelineResponse.explain_stats)
 }
 
 // -------------------------------------------------------------------
diff --git a/Firestore/Protos/cpp/google/firestore/v1/pipeline.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/pipeline.pb.cc
new file mode 100644
index 00000000000..db718366205
--- /dev/null
+++ b/Firestore/Protos/cpp/google/firestore/v1/pipeline.pb.cc
@@ -0,0 +1,466 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/firestore/v1/pipeline.proto
+
+#include "google/firestore/v1/pipeline.pb.h"
+
+#include <algorithm>
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/extension_set.h"
+#include "google/protobuf/wire_format_lite.h"
+#include "google/protobuf/descriptor.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/reflection_ops.h"
+#include "google/protobuf/wire_format.h"
+#include "google/protobuf/generated_message_tctable_impl.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+PROTOBUF_PRAGMA_INIT_SEG
+namespace _pb = ::google::protobuf;
+namespace _pbi = ::google::protobuf::internal;
+namespace _fl = ::google::protobuf::internal::field_layout;
+namespace google {
+namespace firestore {
+namespace v1 {
+      template <typename>
+PROTOBUF_CONSTEXPR StructuredPipeline_OptionsEntry_DoNotUse::StructuredPipeline_OptionsEntry_DoNotUse(::_pbi::ConstantInitialized) {}
+struct StructuredPipeline_OptionsEntry_DoNotUseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR StructuredPipeline_OptionsEntry_DoNotUseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~StructuredPipeline_OptionsEntry_DoNotUseDefaultTypeInternal() {}
+  union {
+    StructuredPipeline_OptionsEntry_DoNotUse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 StructuredPipeline_OptionsEntry_DoNotUseDefaultTypeInternal _StructuredPipeline_OptionsEntry_DoNotUse_default_instance_;
+
+inline constexpr StructuredPipeline::Impl_::Impl_(
+    ::_pbi::ConstantInitialized) noexcept
+      : _cached_size_{0},
+        options_{},
+        pipeline_{nullptr} {}
+
+template <typename>
+PROTOBUF_CONSTEXPR StructuredPipeline::StructuredPipeline(::_pbi::ConstantInitialized)
+    : _impl_(::_pbi::ConstantInitialized()) {}
+struct StructuredPipelineDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR StructuredPipelineDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~StructuredPipelineDefaultTypeInternal() {}
+  union {
+    StructuredPipeline _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 StructuredPipelineDefaultTypeInternal _StructuredPipeline_default_instance_;
+}  // namespace v1
+}  // namespace firestore
+}  // namespace google
+static ::_pb::Metadata file_level_metadata_google_2ffirestore_2fv1_2fpipeline_2eproto[2];
+static constexpr const ::_pb::EnumDescriptor**
+    file_level_enum_descriptors_google_2ffirestore_2fv1_2fpipeline_2eproto = nullptr;
+static constexpr const ::_pb::ServiceDescriptor**
+    file_level_service_descriptors_google_2ffirestore_2fv1_2fpipeline_2eproto = nullptr;
+const ::uint32_t TableStruct_google_2ffirestore_2fv1_2fpipeline_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(
+    protodesc_cold) = {
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline_OptionsEntry_DoNotUse, _has_bits_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline_OptionsEntry_DoNotUse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline_OptionsEntry_DoNotUse, key_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline_OptionsEntry_DoNotUse, value_),
+    0,
+    1,
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline, _impl_.pipeline_),
+    PROTOBUF_FIELD_OFFSET(::google::firestore::v1::StructuredPipeline, _impl_.options_),
+    0,
+    ~0u,
+};
+
+static const ::_pbi::MigrationSchema
+    schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+        {0, 10, -1, sizeof(::google::firestore::v1::StructuredPipeline_OptionsEntry_DoNotUse)},
+        {12, 22, -1, sizeof(::google::firestore::v1::StructuredPipeline)},
+};
+
+static const ::_pb::Message* const file_default_instances[] = {
+    &::google::firestore::v1::_StructuredPipeline_OptionsEntry_DoNotUse_default_instance_._instance,
+    &::google::firestore::v1::_StructuredPipeline_default_instance_._instance,
+};
+const char descriptor_table_protodef_google_2ffirestore_2fv1_2fpipeline_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+    "\n\"google/firestore/v1/pipeline.proto\022\023go"
+    "ogle.firestore.v1\032\037google/api/field_beha"
+    "vior.proto\032\"google/firestore/v1/document"
+    ".proto\"\342\001\n\022StructuredPipeline\0224\n\010pipelin"
+    "e\030\001 \001(\0132\035.google.firestore.v1.PipelineB\003"
+    "\340A\002\022J\n\007options\030\002 \003(\01324.google.firestore."
+    "v1.StructuredPipeline.OptionsEntryB\003\340A\001\032"
+    "J\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022)\n\005value\030\002 "
+    "\001(\0132\032.google.firestore.v1.Value:\0028\001B\305\001\n\027"
+    "com.google.firestore.v1B\rPipelineProtoP\001"
+    "Z;cloud.google.com/go/firestore/apiv1/fi"
+    "restorepb;firestorepb\242\002\004GCFS\252\002\031Google.Cl"
+    "oud.Firestore.V1\312\002\031Google\\Cloud\\Firestor"
+    "e\\V1\352\002\034Google::Cloud::Firestore::V1b\006pro"
+    "to3"
+};
+static const ::_pbi::DescriptorTable* const descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_deps[2] =
+    {
+        &::descriptor_table_google_2fapi_2ffield_5fbehavior_2eproto,
+        &::descriptor_table_google_2ffirestore_2fv1_2fdocument_2eproto,
+};
+static ::absl::once_flag descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_once;
+const ::_pbi::DescriptorTable descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto = {
+    false,
+    false,
+    563,
+    descriptor_table_protodef_google_2ffirestore_2fv1_2fpipeline_2eproto,
+    "google/firestore/v1/pipeline.proto",
+    &descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_once,
+    descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_deps,
+    2,
+    2,
+    schemas,
+    file_default_instances,
+    TableStruct_google_2ffirestore_2fv1_2fpipeline_2eproto::offsets,
+    file_level_metadata_google_2ffirestore_2fv1_2fpipeline_2eproto,
+    file_level_enum_descriptors_google_2ffirestore_2fv1_2fpipeline_2eproto,
+    file_level_service_descriptors_google_2ffirestore_2fv1_2fpipeline_2eproto,
+};
+
+// This function exists to be marked as weak.
+// It can significantly speed up compilation by breaking up LLVM's SCC
+// in the .pb.cc translation units. Large translation units see a
+// reduction of more than 35% of walltime for optimized builds. Without
+// the weak attribute all the messages in the file, including all the
+// vtables and everything they use become part of the same SCC through
+// a cycle like:
+// GetMetadata -> descriptor table -> default instances ->
+//   vtables -> GetMetadata
+// By adding a weak function here we break the connection from the
+// individual vtables back into the descriptor table.
+PROTOBUF_ATTRIBUTE_WEAK const ::_pbi::DescriptorTable* descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_getter() {
+  return &descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto;
+}
+// Force running AddDescriptors() at dynamic initialization time.
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2
+static ::_pbi::AddDescriptorsRunner dynamic_init_dummy_google_2ffirestore_2fv1_2fpipeline_2eproto(&descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto);
+namespace google {
+namespace firestore {
+namespace v1 {
+// ===================================================================
+
+StructuredPipeline_OptionsEntry_DoNotUse::StructuredPipeline_OptionsEntry_DoNotUse() {}
+StructuredPipeline_OptionsEntry_DoNotUse::StructuredPipeline_OptionsEntry_DoNotUse(::google::protobuf::Arena* arena)
+    : SuperType(arena) {}
+::google::protobuf::Metadata StructuredPipeline_OptionsEntry_DoNotUse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fpipeline_2eproto[0]);
+}
+// ===================================================================
+
+class StructuredPipeline::_Internal {
+ public:
+  using HasBits = decltype(std::declval<StructuredPipeline>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(StructuredPipeline, _impl_._has_bits_);
+  static const ::google::firestore::v1::Pipeline& pipeline(const StructuredPipeline* msg);
+  static void set_has_pipeline(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::google::firestore::v1::Pipeline& StructuredPipeline::_Internal::pipeline(const StructuredPipeline* msg) {
+  return *msg->_impl_.pipeline_;
+}
+void StructuredPipeline::clear_pipeline() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (_impl_.pipeline_ != nullptr) _impl_.pipeline_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+void StructuredPipeline::clear_options() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.options_.Clear();
+}
+StructuredPipeline::StructuredPipeline(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:google.firestore.v1.StructuredPipeline)
+}
+inline PROTOBUF_NDEBUG_INLINE StructuredPipeline::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility, ::google::protobuf::Arena* arena,
+    const Impl_& from)
+      : _has_bits_{from._has_bits_},
+        _cached_size_{0},
+        options_{visibility, arena, from.options_} {}
+
+StructuredPipeline::StructuredPipeline(
+    ::google::protobuf::Arena* arena,
+    const StructuredPipeline& from)
+    : ::google::protobuf::Message(arena) {
+  StructuredPipeline* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  new (&_impl_) Impl_(internal_visibility(), arena, from._impl_);
+  ::uint32_t cached_has_bits = _impl_._has_bits_[0];
+  _impl_.pipeline_ = (cached_has_bits & 0x00000001u)
+                ? CreateMaybeMessage<::google::firestore::v1::Pipeline>(arena, *from._impl_.pipeline_)
+                : nullptr;
+
+  // @@protoc_insertion_point(copy_constructor:google.firestore.v1.StructuredPipeline)
+}
+inline PROTOBUF_NDEBUG_INLINE StructuredPipeline::Impl_::Impl_(
+    ::google::protobuf::internal::InternalVisibility visibility,
+    ::google::protobuf::Arena* arena)
+      : _cached_size_{0},
+        options_{visibility, arena} {}
+
+inline void StructuredPipeline::SharedCtor(::_pb::Arena* arena) {
+  new (&_impl_) Impl_(internal_visibility(), arena);
+  _impl_.pipeline_ = {};
+}
+StructuredPipeline::~StructuredPipeline() {
+  // @@protoc_insertion_point(destructor:google.firestore.v1.StructuredPipeline)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void StructuredPipeline::SharedDtor() {
+  ABSL_DCHECK(GetArena() == nullptr);
+  delete _impl_.pipeline_;
+  _impl_.~Impl_();
+}
+
+PROTOBUF_NOINLINE void StructuredPipeline::Clear() {
+// @@protoc_insertion_point(message_clear_start:google.firestore.v1.StructuredPipeline)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.options_.Clear();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.pipeline_ != nullptr);
+    _impl_.pipeline_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* StructuredPipeline::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 2, 3, 54, 2> StructuredPipeline::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(StructuredPipeline, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    3,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_StructuredPipeline_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .google.firestore.v1.Pipeline pipeline = 1 [(.google.api.field_behavior) = REQUIRED];
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(StructuredPipeline, _impl_.pipeline_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .google.firestore.v1.Pipeline pipeline = 1 [(.google.api.field_behavior) = REQUIRED];
+    {PROTOBUF_FIELD_OFFSET(StructuredPipeline, _impl_.pipeline_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // map<string, .google.firestore.v1.Value> options = 2 [(.google.api.field_behavior) = OPTIONAL];
+    {PROTOBUF_FIELD_OFFSET(StructuredPipeline, _impl_.options_), -1, 1,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMap)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::google::firestore::v1::Pipeline>()},
+    {::_pbi::TcParser::GetMapAuxInfo<
+        decltype(StructuredPipeline()._impl_.options_)>(
+        1, 0, 0, 9,
+        11)},
+    {::_pbi::TcParser::CreateInArenaStorageCb<::google::firestore::v1::Value>},
+  }}, {{
+    "\46\0\7\0\0\0\0\0"
+    "google.firestore.v1.StructuredPipeline"
+    "options"
+  }},
+};
+
+::uint8_t* StructuredPipeline::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:google.firestore.v1.StructuredPipeline)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .google.firestore.v1.Pipeline pipeline = 1 [(.google.api.field_behavior) = REQUIRED];
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::InternalWriteMessage(
+        1, _Internal::pipeline(this),
+        _Internal::pipeline(this).GetCachedSize(), target, stream);
+  }
+
+  // map<string, .google.firestore.v1.Value> options = 2 [(.google.api.field_behavior) = OPTIONAL];
+  if (!_internal_options().empty()) {
+    using MapType = ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>;
+    using WireHelper = _pbi::MapEntryFuncs<std::string, ::google::firestore::v1::Value,
+                                   _pbi::WireFormatLite::TYPE_STRING,
+                                   _pbi::WireFormatLite::TYPE_MESSAGE>;
+    const auto& field = _internal_options();
+
+    if (stream->IsSerializationDeterministic() && field.size() > 1) {
+      for (const auto& entry : ::google::protobuf::internal::MapSorterPtr<MapType>(field)) {
+        target = WireHelper::InternalSerialize(
+            2, entry.first, entry.second, target, stream);
+        ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+            entry.first.data(), static_cast<int>(entry.first.length()),
+ ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.StructuredPipeline.options");
+      }
+    } else {
+      for (const auto& entry : field) {
+        target = WireHelper::InternalSerialize(
+            2, entry.first, entry.second, target, stream);
+        ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+            entry.first.data(), static_cast<int>(entry.first.length()),
+ ::google::protobuf::internal::WireFormatLite::SERIALIZE, "google.firestore.v1.StructuredPipeline.options");
+      }
+    }
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:google.firestore.v1.StructuredPipeline)
+  return target;
+}
+
+::size_t StructuredPipeline::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:google.firestore.v1.StructuredPipeline)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // map<string, .google.firestore.v1.Value> options = 2 [(.google.api.field_behavior) = OPTIONAL];
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_options_size());
+  for (const auto& entry : _internal_options()) {
+    total_size += _pbi::MapEntryFuncs<std::string, ::google::firestore::v1::Value,
+                                   _pbi::WireFormatLite::TYPE_STRING,
+                                   _pbi::WireFormatLite::TYPE_MESSAGE>::ByteSizeLong(entry.first, entry.second);
+  }
+  // .google.firestore.v1.Pipeline pipeline = 1 [(.google.api.field_behavior) = REQUIRED];
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size +=
+        1 + ::google::protobuf::internal::WireFormatLite::MessageSize(*_impl_.pipeline_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData StructuredPipeline::_class_data_ = {
+    StructuredPipeline::MergeImpl,
+    nullptr,  // OnDemandRegisterArenaDtor
+};
+const ::google::protobuf::Message::ClassData* StructuredPipeline::GetClassData() const {
+  return &_class_data_;
+}
+
+void StructuredPipeline::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<StructuredPipeline*>(&to_msg);
+  auto& from = static_cast<const StructuredPipeline&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:google.firestore.v1.StructuredPipeline)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_impl_.options_.MergeFrom(from._impl_.options_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_pipeline()->::google::firestore::v1::Pipeline::MergeFrom(
+        from._internal_pipeline());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void StructuredPipeline::CopyFrom(const StructuredPipeline& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:google.firestore.v1.StructuredPipeline)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool StructuredPipeline::IsInitialized() const {
+  return true;
+}
+
+::_pbi::CachedSize* StructuredPipeline::AccessCachedSize() const {
+  return &_impl_._cached_size_;
+}
+void StructuredPipeline::InternalSwap(StructuredPipeline* PROTOBUF_RESTRICT other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  _impl_.options_.InternalSwap(&other->_impl_.options_);
+  swap(_impl_.pipeline_, other->_impl_.pipeline_);
+}
+
+::google::protobuf::Metadata StructuredPipeline::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_getter, &descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto_once,
+      file_level_metadata_google_2ffirestore_2fv1_2fpipeline_2eproto[1]);
+}
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace v1
+}  // namespace firestore
+}  // namespace google
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+// @@protoc_insertion_point(global_scope)
+#include "google/protobuf/port_undef.inc"
diff --git a/Firestore/Protos/cpp/google/firestore/v1/pipeline.pb.h b/Firestore/Protos/cpp/google/firestore/v1/pipeline.pb.h
new file mode 100644
index 00000000000..1487e6b1629
--- /dev/null
+++ b/Firestore/Protos/cpp/google/firestore/v1/pipeline.pb.h
@@ -0,0 +1,480 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/firestore/v1/pipeline.proto
+// Protobuf C++ Version: 4.25.1
+
+#ifndef GOOGLE_PROTOBUF_INCLUDED_google_2ffirestore_2fv1_2fpipeline_2eproto_2epb_2eh
+#define GOOGLE_PROTOBUF_INCLUDED_google_2ffirestore_2fv1_2fpipeline_2eproto_2epb_2eh
+
+#include <limits>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "google/protobuf/port_def.inc"
+#if PROTOBUF_VERSION < 4025000
+#error "This file was generated by a newer version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please update"
+#error "your headers."
+#endif  // PROTOBUF_VERSION
+
+#if 4025001 < PROTOBUF_MIN_PROTOC_VERSION
+#error "This file was generated by an older version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please"
+#error "regenerate this file with a newer version of protoc."
+#endif  // PROTOBUF_MIN_PROTOC_VERSION
+#include "google/protobuf/port_undef.inc"
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/arena.h"
+#include "google/protobuf/arenastring.h"
+#include "google/protobuf/generated_message_tctable_decl.h"
+#include "google/protobuf/generated_message_util.h"
+#include "google/protobuf/metadata_lite.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/message.h"
+#include "google/protobuf/repeated_field.h"  // IWYU pragma: export
+#include "google/protobuf/extension_set.h"  // IWYU pragma: export
+#include "google/protobuf/map.h"  // IWYU pragma: export
+#include "google/protobuf/map_entry.h"
+#include "google/protobuf/map_field_inl.h"
+#include "google/protobuf/unknown_field_set.h"
+#include "google/api/field_behavior.pb.h"
+#include "google/firestore/v1/document.pb.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+
+#define PROTOBUF_INTERNAL_EXPORT_google_2ffirestore_2fv1_2fpipeline_2eproto
+
+namespace google {
+namespace protobuf {
+namespace internal {
+class AnyMetadata;
+}  // namespace internal
+}  // namespace protobuf
+}  // namespace google
+
+// Internal implementation detail -- do not use these members.
+struct TableStruct_google_2ffirestore_2fv1_2fpipeline_2eproto {
+  static const ::uint32_t offsets[];
+};
+extern const ::google::protobuf::internal::DescriptorTable
+    descriptor_table_google_2ffirestore_2fv1_2fpipeline_2eproto;
+namespace google {
+namespace firestore {
+namespace v1 {
+class StructuredPipeline;
+struct StructuredPipelineDefaultTypeInternal;
+extern StructuredPipelineDefaultTypeInternal _StructuredPipeline_default_instance_;
+class StructuredPipeline_OptionsEntry_DoNotUse;
+struct StructuredPipeline_OptionsEntry_DoNotUseDefaultTypeInternal;
+extern StructuredPipeline_OptionsEntry_DoNotUseDefaultTypeInternal _StructuredPipeline_OptionsEntry_DoNotUse_default_instance_;
+}  // namespace v1
+}  // namespace firestore
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+
+namespace google {
+namespace firestore {
+namespace v1 {
+
+// ===================================================================
+
+
+// -------------------------------------------------------------------
+
+class StructuredPipeline_OptionsEntry_DoNotUse final
+    : public ::google::protobuf::internal::MapEntry<
+          StructuredPipeline_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+          ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+          ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE> {
+ public:
+  using SuperType = ::google::protobuf::internal::MapEntry<
+      StructuredPipeline_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+      ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE>;
+  StructuredPipeline_OptionsEntry_DoNotUse();
+  template <typename = void>
+  explicit PROTOBUF_CONSTEXPR StructuredPipeline_OptionsEntry_DoNotUse(
+      ::google::protobuf::internal::ConstantInitialized);
+  explicit StructuredPipeline_OptionsEntry_DoNotUse(::google::protobuf::Arena* arena);
+  static const StructuredPipeline_OptionsEntry_DoNotUse* internal_default_instance() {
+    return reinterpret_cast<const StructuredPipeline_OptionsEntry_DoNotUse*>(
+        &_StructuredPipeline_OptionsEntry_DoNotUse_default_instance_);
+  }
+  static bool ValidateKey(std::string* s) {
+    return ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::google::protobuf::internal::WireFormatLite::PARSE, "google.firestore.v1.StructuredPipeline.OptionsEntry.key");
+ }
+  static bool ValidateValue(void*) { return true; }
+  ::google::protobuf::Metadata GetMetadata() const final;
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fpipeline_2eproto;
+};
+// -------------------------------------------------------------------
+
+class StructuredPipeline final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:google.firestore.v1.StructuredPipeline) */ {
+ public:
+  inline StructuredPipeline() : StructuredPipeline(nullptr) {}
+  ~StructuredPipeline() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR StructuredPipeline(::google::protobuf::internal::ConstantInitialized);
+
+  inline StructuredPipeline(const StructuredPipeline& from)
+      : StructuredPipeline(nullptr, from) {}
+  StructuredPipeline(StructuredPipeline&& from) noexcept
+    : StructuredPipeline() {
+    *this = ::std::move(from);
+  }
+
+  inline StructuredPipeline& operator=(const StructuredPipeline& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline StructuredPipeline& operator=(StructuredPipeline&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetArena() == from.GetArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields()
+      ABSL_ATTRIBUTE_LIFETIME_BOUND {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const StructuredPipeline& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const StructuredPipeline* internal_default_instance() {
+    return reinterpret_cast<const StructuredPipeline*>(
+               &_StructuredPipeline_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    1;
+
+  friend void swap(StructuredPipeline& a, StructuredPipeline& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(StructuredPipeline* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() != nullptr &&
+        GetArena() == other->GetArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetArena() == other->GetArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(StructuredPipeline* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetArena() == other->GetArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  StructuredPipeline* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<StructuredPipeline>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const StructuredPipeline& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const StructuredPipeline& from) {
+    StructuredPipeline::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const { return _impl_._cached_size_.Get(); }
+
+  private:
+  ::google::protobuf::internal::CachedSize* AccessCachedSize() const final;
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void InternalSwap(StructuredPipeline* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "google.firestore.v1.StructuredPipeline";
+  }
+  protected:
+  explicit StructuredPipeline(::google::protobuf::Arena* arena);
+  StructuredPipeline(::google::protobuf::Arena* arena, const StructuredPipeline& from);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kOptionsFieldNumber = 2,
+    kPipelineFieldNumber = 1,
+  };
+  // map<string, .google.firestore.v1.Value> options = 2 [(.google.api.field_behavior) = OPTIONAL];
+  int options_size() const;
+  private:
+  int _internal_options_size() const;
+
+  public:
+  void clear_options() ;
+  const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& options() const;
+  ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* mutable_options();
+
+  private:
+  const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& _internal_options() const;
+  ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* _internal_mutable_options();
+
+  public:
+  // .google.firestore.v1.Pipeline pipeline = 1 [(.google.api.field_behavior) = REQUIRED];
+  bool has_pipeline() const;
+  void clear_pipeline() ;
+  const ::google::firestore::v1::Pipeline& pipeline() const;
+  PROTOBUF_NODISCARD ::google::firestore::v1::Pipeline* release_pipeline();
+  ::google::firestore::v1::Pipeline* mutable_pipeline();
+  void set_allocated_pipeline(::google::firestore::v1::Pipeline* value);
+  void unsafe_arena_set_allocated_pipeline(::google::firestore::v1::Pipeline* value);
+  ::google::firestore::v1::Pipeline* unsafe_arena_release_pipeline();
+
+  private:
+  const ::google::firestore::v1::Pipeline& _internal_pipeline() const;
+  ::google::firestore::v1::Pipeline* _internal_mutable_pipeline();
+
+  public:
+  // @@protoc_insertion_point(class_scope:google.firestore.v1.StructuredPipeline)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<
+      0, 2, 3,
+      54, 2>
+      _table_;
+  friend class ::google::protobuf::MessageLite;
+  friend class ::google::protobuf::Arena;
+  template <typename T>
+  friend class ::google::protobuf::Arena::InternalHelper;
+  using InternalArenaConstructable_ = void;
+  using DestructorSkippable_ = void;
+  struct Impl_ {
+
+        inline explicit constexpr Impl_(
+            ::google::protobuf::internal::ConstantInitialized) noexcept;
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena);
+        inline explicit Impl_(::google::protobuf::internal::InternalVisibility visibility,
+                              ::google::protobuf::Arena* arena, const Impl_& from);
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::internal::MapField<StructuredPipeline_OptionsEntry_DoNotUse, std::string, ::google::firestore::v1::Value,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_STRING,
+                      ::google::protobuf::internal::WireFormatLite::TYPE_MESSAGE>
+        options_;
+    ::google::firestore::v1::Pipeline* pipeline_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_google_2ffirestore_2fv1_2fpipeline_2eproto;
+};
+
+// ===================================================================
+
+
+
+
+// ===================================================================
+
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif  // __GNUC__
+// -------------------------------------------------------------------
+
+// -------------------------------------------------------------------
+
+// StructuredPipeline
+
+// .google.firestore.v1.Pipeline pipeline = 1 [(.google.api.field_behavior) = REQUIRED];
+inline bool StructuredPipeline::has_pipeline() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.pipeline_ != nullptr);
+  return value;
+}
+inline const ::google::firestore::v1::Pipeline& StructuredPipeline::_internal_pipeline() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::google::firestore::v1::Pipeline* p = _impl_.pipeline_;
+  return p != nullptr ? *p : reinterpret_cast<const ::google::firestore::v1::Pipeline&>(::google::firestore::v1::_Pipeline_default_instance_);
+}
+inline const ::google::firestore::v1::Pipeline& StructuredPipeline::pipeline() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_get:google.firestore.v1.StructuredPipeline.pipeline)
+  return _internal_pipeline();
+}
+inline void StructuredPipeline::unsafe_arena_set_allocated_pipeline(::google::firestore::v1::Pipeline* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArena() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.pipeline_);
+  }
+  _impl_.pipeline_ = reinterpret_cast<::google::firestore::v1::Pipeline*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:google.firestore.v1.StructuredPipeline.pipeline)
+}
+inline ::google::firestore::v1::Pipeline* StructuredPipeline::release_pipeline() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Pipeline* released = _impl_.pipeline_;
+  _impl_.pipeline_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArena() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArena() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::google::firestore::v1::Pipeline* StructuredPipeline::unsafe_arena_release_pipeline() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:google.firestore.v1.StructuredPipeline.pipeline)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::google::firestore::v1::Pipeline* temp = _impl_.pipeline_;
+  _impl_.pipeline_ = nullptr;
+  return temp;
+}
+inline ::google::firestore::v1::Pipeline* StructuredPipeline::_internal_mutable_pipeline() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.pipeline_ == nullptr) {
+    auto* p = CreateMaybeMessage<::google::firestore::v1::Pipeline>(GetArena());
+    _impl_.pipeline_ = reinterpret_cast<::google::firestore::v1::Pipeline*>(p);
+  }
+  return _impl_.pipeline_;
+}
+inline ::google::firestore::v1::Pipeline* StructuredPipeline::mutable_pipeline() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  ::google::firestore::v1::Pipeline* _msg = _internal_mutable_pipeline();
+  // @@protoc_insertion_point(field_mutable:google.firestore.v1.StructuredPipeline.pipeline)
+  return _msg;
+}
+inline void StructuredPipeline::set_allocated_pipeline(::google::firestore::v1::Pipeline* value) {
+  ::google::protobuf::Arena* message_arena = GetArena();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.pipeline_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena = reinterpret_cast<::google::protobuf::MessageLite*>(value)->GetArena();
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.pipeline_ = reinterpret_cast<::google::firestore::v1::Pipeline*>(value);
+  // @@protoc_insertion_point(field_set_allocated:google.firestore.v1.StructuredPipeline.pipeline)
+}
+
+// map<string, .google.firestore.v1.Value> options = 2 [(.google.api.field_behavior) = OPTIONAL];
+inline int StructuredPipeline::_internal_options_size() const {
+  return _internal_options().size();
+}
+inline int StructuredPipeline::options_size() const {
+  return _internal_options_size();
+}
+inline const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& StructuredPipeline::_internal_options() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.options_.GetMap();
+}
+inline const ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>& StructuredPipeline::options() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_map:google.firestore.v1.StructuredPipeline.options)
+  return _internal_options();
+}
+inline ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* StructuredPipeline::_internal_mutable_options() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _impl_.options_.MutableMap();
+}
+inline ::google::protobuf::Map<std::string, ::google::firestore::v1::Value>* StructuredPipeline::mutable_options() ABSL_ATTRIBUTE_LIFETIME_BOUND {
+  // @@protoc_insertion_point(field_mutable_map:google.firestore.v1.StructuredPipeline.options)
+  return _internal_mutable_options();
+}
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif  // __GNUC__
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace v1
+}  // namespace firestore
+}  // namespace google
+
+
+// @@protoc_insertion_point(global_scope)
+
+#include "google/protobuf/port_undef.inc"
+
+#endif  // GOOGLE_PROTOBUF_INCLUDED_google_2ffirestore_2fv1_2fpipeline_2eproto_2epb_2eh
diff --git a/Firestore/Protos/cpp/google/firestore/v1/query.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/query.pb.cc
index 7ad9fec1f02..af917d57906 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/query.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/v1/query.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/query.pb.h b/Firestore/Protos/cpp/google/firestore/v1/query.pb.h
index 205f9bea8a0..52bdd1d4641 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/query.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/v1/query.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/write.pb.cc b/Firestore/Protos/cpp/google/firestore/v1/write.pb.cc
index b1e26f29a16..51916110a2e 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/write.pb.cc
+++ b/Firestore/Protos/cpp/google/firestore/v1/write.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/firestore/v1/write.pb.h b/Firestore/Protos/cpp/google/firestore/v1/write.pb.h
index 46fd9394542..2bc4a3b3cf3 100644
--- a/Firestore/Protos/cpp/google/firestore/v1/write.pb.h
+++ b/Firestore/Protos/cpp/google/firestore/v1/write.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/rpc/status.pb.cc b/Firestore/Protos/cpp/google/rpc/status.pb.cc
index e053fa12c18..b6cfa669f6f 100644
--- a/Firestore/Protos/cpp/google/rpc/status.pb.cc
+++ b/Firestore/Protos/cpp/google/rpc/status.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/rpc/status.pb.h b/Firestore/Protos/cpp/google/rpc/status.pb.h
index fdadd942ac4..d3b966147b6 100644
--- a/Firestore/Protos/cpp/google/rpc/status.pb.h
+++ b/Firestore/Protos/cpp/google/rpc/status.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/type/latlng.pb.cc b/Firestore/Protos/cpp/google/type/latlng.pb.cc
index 5303b0891a2..b9efd72a5af 100644
--- a/Firestore/Protos/cpp/google/type/latlng.pb.cc
+++ b/Firestore/Protos/cpp/google/type/latlng.pb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/cpp/google/type/latlng.pb.h b/Firestore/Protos/cpp/google/type/latlng.pb.h
index 0f889988d23..6fd0da83cf0 100644
--- a/Firestore/Protos/cpp/google/type/latlng.pb.h
+++ b/Firestore/Protos/cpp/google/type/latlng.pb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/bundle.nanopb.cc b/Firestore/Protos/nanopb/firestore/bundle.nanopb.cc
index 6e15969980e..f470145f1ad 100644
--- a/Firestore/Protos/nanopb/firestore/bundle.nanopb.cc
+++ b/Firestore/Protos/nanopb/firestore/bundle.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/bundle.nanopb.h b/Firestore/Protos/nanopb/firestore/bundle.nanopb.h
index 872ea118504..bb312068857 100644
--- a/Firestore/Protos/nanopb/firestore/bundle.nanopb.h
+++ b/Firestore/Protos/nanopb/firestore/bundle.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.cc b/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.cc
index 2f906d9f95d..f145a4a81b8 100644
--- a/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.cc
+++ b/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h b/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h
index 53762bb101f..a6373161785 100644
--- a/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h
+++ b/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc b/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc
index 1a06d56941d..55f9a23489e 100644
--- a/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc
+++ b/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h b/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h
index 28430465212..b316ea582b9 100644
--- a/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h
+++ b/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/local/target.nanopb.cc b/Firestore/Protos/nanopb/firestore/local/target.nanopb.cc
index cd73d9344f7..7d0d51ab579 100644
--- a/Firestore/Protos/nanopb/firestore/local/target.nanopb.cc
+++ b/Firestore/Protos/nanopb/firestore/local/target.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/firestore/local/target.nanopb.h b/Firestore/Protos/nanopb/firestore/local/target.nanopb.h
index 7dedb4d91eb..34f926f3ea0 100644
--- a/Firestore/Protos/nanopb/firestore/local/target.nanopb.h
+++ b/Firestore/Protos/nanopb/firestore/local/target.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/api/annotations.nanopb.cc b/Firestore/Protos/nanopb/google/api/annotations.nanopb.cc
index b755cad4926..c0bc8de7cdf 100644
--- a/Firestore/Protos/nanopb/google/api/annotations.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/api/annotations.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/api/annotations.nanopb.h b/Firestore/Protos/nanopb/google/api/annotations.nanopb.h
index 4ddc9010007..46f6d833985 100644
--- a/Firestore/Protos/nanopb/google/api/annotations.nanopb.h
+++ b/Firestore/Protos/nanopb/google/api/annotations.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/api/field_behavior.nanopb.cc b/Firestore/Protos/nanopb/google/api/field_behavior.nanopb.cc
new file mode 100644
index 00000000000..38e3aa6a29b
--- /dev/null
+++ b/Firestore/Protos/nanopb/google/api/field_behavior.nanopb.cc
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "field_behavior.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+#error Field descriptor for google_api_field_behavior_struct.field_behavior is too large. Define PB_FIELD_16BIT to fix this.
+#endif
+
+
+const char* EnumToString(
+  google_api_FieldBehavior value) {
+    switch (value) {
+    case google_api_FieldBehavior_FIELD_BEHAVIOR_UNSPECIFIED:
+        return "FIELD_BEHAVIOR_UNSPECIFIED";
+    case google_api_FieldBehavior_OPTIONAL:
+        return "OPTIONAL";
+    case google_api_FieldBehavior_REQUIRED:
+        return "REQUIRED";
+    case google_api_FieldBehavior_OUTPUT_ONLY:
+        return "OUTPUT_ONLY";
+    case google_api_FieldBehavior_INPUT_ONLY:
+        return "INPUT_ONLY";
+    case google_api_FieldBehavior_IMMUTABLE:
+        return "IMMUTABLE";
+    case google_api_FieldBehavior_UNORDERED_LIST:
+        return "UNORDERED_LIST";
+    case google_api_FieldBehavior_NON_EMPTY_DEFAULT:
+        return "NON_EMPTY_DEFAULT";
+    case google_api_FieldBehavior_IDENTIFIER:
+        return "IDENTIFIER";
+    }
+    return "<unknown enum value>";
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/Firestore/Protos/nanopb/google/api/field_behavior.nanopb.h b/Firestore/Protos/nanopb/google/api/field_behavior.nanopb.h
new file mode 100644
index 00000000000..ad18ad8b3cf
--- /dev/null
+++ b/Firestore/Protos/nanopb/google/api/field_behavior.nanopb.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_API_FIELD_BEHAVIOR_NANOPB_H_INCLUDED
+#define PB_GOOGLE_API_FIELD_BEHAVIOR_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _google_api_FieldBehavior {
+    google_api_FieldBehavior_FIELD_BEHAVIOR_UNSPECIFIED = 0,
+    google_api_FieldBehavior_OPTIONAL = 1,
+    google_api_FieldBehavior_REQUIRED = 2,
+    google_api_FieldBehavior_OUTPUT_ONLY = 3,
+    google_api_FieldBehavior_INPUT_ONLY = 4,
+    google_api_FieldBehavior_IMMUTABLE = 5,
+    google_api_FieldBehavior_UNORDERED_LIST = 6,
+    google_api_FieldBehavior_NON_EMPTY_DEFAULT = 7,
+    google_api_FieldBehavior_IDENTIFIER = 8
+} google_api_FieldBehavior;
+#define _google_api_FieldBehavior_MIN google_api_FieldBehavior_FIELD_BEHAVIOR_UNSPECIFIED
+#define _google_api_FieldBehavior_MAX google_api_FieldBehavior_IDENTIFIER
+#define _google_api_FieldBehavior_ARRAYSIZE ((google_api_FieldBehavior)(google_api_FieldBehavior_IDENTIFIER+1))
+
+/* Extensions */
+/* Extension field google_api_field_behavior was skipped because only "optional"
+   type of extension fields is currently supported. */
+
+const char* EnumToString(google_api_FieldBehavior value);
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/Firestore/Protos/nanopb/google/api/http.nanopb.cc b/Firestore/Protos/nanopb/google/api/http.nanopb.cc
index b69f3495d6f..6be59e2b5b8 100644
--- a/Firestore/Protos/nanopb/google/api/http.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/api/http.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/api/http.nanopb.h b/Firestore/Protos/nanopb/google/api/http.nanopb.h
index 5d97d74d221..af98141f2c4 100644
--- a/Firestore/Protos/nanopb/google/api/http.nanopb.h
+++ b/Firestore/Protos/nanopb/google/api/http.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/api/resource.nanopb.cc b/Firestore/Protos/nanopb/google/api/resource.nanopb.cc
index 82456fe0cc8..852f7122473 100644
--- a/Firestore/Protos/nanopb/google/api/resource.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/api/resource.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/api/resource.nanopb.h b/Firestore/Protos/nanopb/google/api/resource.nanopb.h
index 7c7c1ffabaa..741cc580045 100644
--- a/Firestore/Protos/nanopb/google/api/resource.nanopb.h
+++ b/Firestore/Protos/nanopb/google/api/resource.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.cc
index 5769d63aec7..acf9ce034d4 100644
--- a/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.h b/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.h
index e9ba3c9cb86..9caefad8c54 100644
--- a/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/admin/index.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.cc
index 5a740ffd8be..6b6dfe77b90 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.h
index a64f9163853..0bed00bba6d 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/v1/aggregation_result.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.cc
index 3ce3049039a..e30c4b9613f 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.h
index 0f294a9b9e1..e46bb381ada 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/v1/bloom_filter.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.cc
index 26c423266d4..f3b4bed3ff7 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.h
index 7772c08f7df..b63ff25e66e 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.cc
index f236b603132..0fa5a799153 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ const pb_field_t google_firestore_v1_Document_FieldsEntry_fields[3] = {
     PB_LAST_FIELD
 };
 
-const pb_field_t google_firestore_v1_Value_fields[12] = {
+const pb_field_t google_firestore_v1_Value_fields[15] = {
     PB_ANONYMOUS_ONEOF_FIELD(value_type,   1, BOOL    , ONEOF, STATIC  , FIRST, google_firestore_v1_Value, boolean_value, boolean_value, 0),
     PB_ANONYMOUS_ONEOF_FIELD(value_type,   2, INT64   , ONEOF, STATIC  , UNION, google_firestore_v1_Value, integer_value, integer_value, 0),
     PB_ANONYMOUS_ONEOF_FIELD(value_type,   3, DOUBLE  , ONEOF, STATIC  , UNION, google_firestore_v1_Value, double_value, double_value, 0),
@@ -63,6 +63,9 @@ const pb_field_t google_firestore_v1_Value_fields[12] = {
     PB_ANONYMOUS_ONEOF_FIELD(value_type,  11, UENUM   , ONEOF, STATIC  , UNION, google_firestore_v1_Value, null_value, null_value, 0),
     PB_ANONYMOUS_ONEOF_FIELD(value_type,  17, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Value, string_value, string_value, 0),
     PB_ANONYMOUS_ONEOF_FIELD(value_type,  18, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Value, bytes_value, bytes_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,  19, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Value, field_reference_value, field_reference_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,  20, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Value, function_value, function_value, &google_firestore_v1_Function_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,  21, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Value, pipeline_value, pipeline_value, &google_firestore_v1_Pipeline_fields),
     PB_LAST_FIELD
 };
 
@@ -82,6 +85,37 @@ const pb_field_t google_firestore_v1_MapValue_FieldsEntry_fields[3] = {
     PB_LAST_FIELD
 };
 
+const pb_field_t google_firestore_v1_Function_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_Function, name, name, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_Function, args, name, &google_firestore_v1_Value_fields),
+    PB_FIELD(  3, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_Function, options, args, &google_firestore_v1_Function_OptionsEntry_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Function_OptionsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_Function_OptionsEntry, key, key, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_Function_OptionsEntry, value, key, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Pipeline_fields[2] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_firestore_v1_Pipeline, stages, stages, &google_firestore_v1_Pipeline_Stage_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Pipeline_Stage_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_Pipeline_Stage, name, name, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_Pipeline_Stage, args, name, &google_firestore_v1_Value_fields),
+    PB_FIELD(  3, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_Pipeline_Stage, options, args, &google_firestore_v1_Pipeline_Stage_OptionsEntry_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Pipeline_Stage_OptionsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_Pipeline_Stage_OptionsEntry, key, key, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_Pipeline_Stage_OptionsEntry, value, key, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
 
 /* Check that field information fits in pb_field_t */
 #if !defined(PB_FIELD_32BIT)
@@ -92,7 +126,7 @@ const pb_field_t google_firestore_v1_MapValue_FieldsEntry_fields[3] = {
  * numbers or field sizes that are larger than what can fit in 8 or 16 bit
  * field descriptors.
  */
-PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Document, create_time) < 65536 && pb_membersize(google_firestore_v1_Document, update_time) < 65536 && pb_membersize(google_firestore_v1_Document_FieldsEntry, value) < 65536 && pb_membersize(google_firestore_v1_Value, map_value) < 65536 && pb_membersize(google_firestore_v1_Value, geo_point_value) < 65536 && pb_membersize(google_firestore_v1_Value, array_value) < 65536 && pb_membersize(google_firestore_v1_Value, timestamp_value) < 65536 && pb_membersize(google_firestore_v1_MapValue_FieldsEntry, value) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_Document_google_firestore_v1_Document_FieldsEntry_google_firestore_v1_Value_google_firestore_v1_ArrayValue_google_firestore_v1_MapValue_google_firestore_v1_MapValue_FieldsEntry)
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Document, create_time) < 65536 && pb_membersize(google_firestore_v1_Document, update_time) < 65536 && pb_membersize(google_firestore_v1_Document_FieldsEntry, value) < 65536 && pb_membersize(google_firestore_v1_Value, map_value) < 65536 && pb_membersize(google_firestore_v1_Value, geo_point_value) < 65536 && pb_membersize(google_firestore_v1_Value, array_value) < 65536 && pb_membersize(google_firestore_v1_Value, timestamp_value) < 65536 && pb_membersize(google_firestore_v1_Value, function_value) < 65536 && pb_membersize(google_firestore_v1_Value, pipeline_value) < 65536 && pb_membersize(google_firestore_v1_MapValue_FieldsEntry, value) < 65536 && pb_membersize(google_firestore_v1_Function_OptionsEntry, value) < 65536 && pb_membersize(google_firestore_v1_Pipeline_Stage_OptionsEntry, value) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_Document_google_firestore_v1_Document_FieldsEntry_google_firestore_v1_Value_google_firestore_v1_ArrayValue_google_firestore_v1_MapValue_google_firestore_v1_MapValue_FieldsEntry_google_firestore_v1_Function_google_firestore_v1_Function_OptionsEntry_google_firestore_v1_Pipeline_google_firestore_v1_Pipeline_Stage_google_firestore_v1_Pipeline_Stage_OptionsEntry)
 #endif
 
 #if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
@@ -103,7 +137,7 @@ PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Document, create_time) < 655
  * numbers or field sizes that are larger than what can fit in the default
  * 8 bit descriptors.
  */
-PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Document, create_time) < 256 && pb_membersize(google_firestore_v1_Document, update_time) < 256 && pb_membersize(google_firestore_v1_Document_FieldsEntry, value) < 256 && pb_membersize(google_firestore_v1_Value, map_value) < 256 && pb_membersize(google_firestore_v1_Value, geo_point_value) < 256 && pb_membersize(google_firestore_v1_Value, array_value) < 256 && pb_membersize(google_firestore_v1_Value, timestamp_value) < 256 && pb_membersize(google_firestore_v1_MapValue_FieldsEntry, value) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_Document_google_firestore_v1_Document_FieldsEntry_google_firestore_v1_Value_google_firestore_v1_ArrayValue_google_firestore_v1_MapValue_google_firestore_v1_MapValue_FieldsEntry)
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Document, create_time) < 256 && pb_membersize(google_firestore_v1_Document, update_time) < 256 && pb_membersize(google_firestore_v1_Document_FieldsEntry, value) < 256 && pb_membersize(google_firestore_v1_Value, map_value) < 256 && pb_membersize(google_firestore_v1_Value, geo_point_value) < 256 && pb_membersize(google_firestore_v1_Value, array_value) < 256 && pb_membersize(google_firestore_v1_Value, timestamp_value) < 256 && pb_membersize(google_firestore_v1_Value, function_value) < 256 && pb_membersize(google_firestore_v1_Value, pipeline_value) < 256 && pb_membersize(google_firestore_v1_MapValue_FieldsEntry, value) < 256 && pb_membersize(google_firestore_v1_Function_OptionsEntry, value) < 256 && pb_membersize(google_firestore_v1_Pipeline_Stage_OptionsEntry, value) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_Document_google_firestore_v1_Document_FieldsEntry_google_firestore_v1_Value_google_firestore_v1_ArrayValue_google_firestore_v1_MapValue_google_firestore_v1_MapValue_FieldsEntry_google_firestore_v1_Function_google_firestore_v1_Function_OptionsEntry_google_firestore_v1_Pipeline_google_firestore_v1_Pipeline_Stage_google_firestore_v1_Pipeline_Stage_OptionsEntry)
 #endif
 
 
@@ -193,6 +227,18 @@ std::string google_firestore_v1_Value::ToString(int indent) const {
         tostring_result += PrintPrimitiveField("bytes_value: ",
             bytes_value, indent + 1, true);
         break;
+    case google_firestore_v1_Value_field_reference_value_tag:
+        tostring_result += PrintPrimitiveField("field_reference_value: ",
+            field_reference_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_function_value_tag:
+        tostring_result += PrintMessageField("function_value ",
+            function_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_pipeline_value_tag:
+        tostring_result += PrintMessageField("pipeline_value ",
+            pipeline_value, indent + 1, true);
+        break;
     }
 
     bool is_root = indent == 0;
@@ -251,6 +297,92 @@ std::string google_firestore_v1_MapValue_FieldsEntry::ToString(int indent) const
     return tostring_header + tostring_result + tostring_tail;
 }
 
+std::string google_firestore_v1_Function::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "Function", this);
+    std::string tostring_result;
+
+    tostring_result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    for (pb_size_t i = 0; i != args_count; ++i) {
+        tostring_result += PrintMessageField("args ",
+            args[i], indent + 1, true);
+    }
+    for (pb_size_t i = 0; i != options_count; ++i) {
+        tostring_result += PrintMessageField("options ",
+            options[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!tostring_result.empty() || is_root) {
+      std::string tostring_tail = PrintTail(indent);
+      return tostring_header + tostring_result + tostring_tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Function_OptionsEntry::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "OptionsEntry", this);
+    std::string tostring_result;
+
+    tostring_result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    tostring_result += PrintMessageField("value ", value, indent + 1, false);
+
+    std::string tostring_tail = PrintTail(indent);
+    return tostring_header + tostring_result + tostring_tail;
+}
+
+std::string google_firestore_v1_Pipeline::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "Pipeline", this);
+    std::string tostring_result;
+
+    for (pb_size_t i = 0; i != stages_count; ++i) {
+        tostring_result += PrintMessageField("stages ",
+            stages[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!tostring_result.empty() || is_root) {
+      std::string tostring_tail = PrintTail(indent);
+      return tostring_header + tostring_result + tostring_tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Pipeline_Stage::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "Stage", this);
+    std::string tostring_result;
+
+    tostring_result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    for (pb_size_t i = 0; i != args_count; ++i) {
+        tostring_result += PrintMessageField("args ",
+            args[i], indent + 1, true);
+    }
+    for (pb_size_t i = 0; i != options_count; ++i) {
+        tostring_result += PrintMessageField("options ",
+            options[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!tostring_result.empty() || is_root) {
+      std::string tostring_tail = PrintTail(indent);
+      return tostring_header + tostring_result + tostring_tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Pipeline_Stage_OptionsEntry::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "OptionsEntry", this);
+    std::string tostring_result;
+
+    tostring_result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    tostring_result += PrintMessageField("value ", value, indent + 1, false);
+
+    std::string tostring_tail = PrintTail(indent);
+    return tostring_header + tostring_result + tostring_tail;
+}
+
 }  // namespace firestore
 }  // namespace firebase
 
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h
index 6a6435c05a3..c168433c5a8 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,8 @@
 #define PB_GOOGLE_FIRESTORE_V1_DOCUMENT_NANOPB_H_INCLUDED
 #include <pb.h>
 
+#include "google/api/field_behavior.nanopb.h"
+
 #include "google/protobuf/struct.nanopb.h"
 
 #include "google/protobuf/timestamp.nanopb.h"
@@ -47,6 +49,17 @@ typedef struct _google_firestore_v1_ArrayValue {
 /* @@protoc_insertion_point(struct:google_firestore_v1_ArrayValue) */
 } google_firestore_v1_ArrayValue;
 
+typedef struct _google_firestore_v1_Function {
+    pb_bytes_array_t *name;
+    pb_size_t args_count;
+    struct _google_firestore_v1_Value *args;
+    pb_size_t options_count;
+    struct _google_firestore_v1_Function_OptionsEntry *options;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Function) */
+} google_firestore_v1_Function;
+
 typedef struct _google_firestore_v1_MapValue {
     pb_size_t fields_count;
     struct _google_firestore_v1_MapValue_FieldsEntry *fields;
@@ -55,6 +68,25 @@ typedef struct _google_firestore_v1_MapValue {
 /* @@protoc_insertion_point(struct:google_firestore_v1_MapValue) */
 } google_firestore_v1_MapValue;
 
+typedef struct _google_firestore_v1_Pipeline {
+    pb_size_t stages_count;
+    struct _google_firestore_v1_Pipeline_Stage *stages;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Pipeline) */
+} google_firestore_v1_Pipeline;
+
+typedef struct _google_firestore_v1_Pipeline_Stage {
+    pb_bytes_array_t *name;
+    pb_size_t args_count;
+    struct _google_firestore_v1_Value *args;
+    pb_size_t options_count;
+    struct _google_firestore_v1_Pipeline_Stage_OptionsEntry *options;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Pipeline_Stage) */
+} google_firestore_v1_Pipeline_Stage;
+
 typedef struct _google_firestore_v1_Document {
     pb_bytes_array_t *name;
     pb_size_t fields_count;
@@ -81,6 +113,9 @@ typedef struct _google_firestore_v1_Value {
         google_protobuf_NullValue null_value;
         pb_bytes_array_t *string_value;
         pb_bytes_array_t *bytes_value;
+        pb_bytes_array_t *field_reference_value;
+        google_firestore_v1_Function function_value;
+        google_firestore_v1_Pipeline pipeline_value;
     };
 
     std::string ToString(int indent = 0) const;
@@ -95,6 +130,14 @@ typedef struct _google_firestore_v1_Document_FieldsEntry {
 /* @@protoc_insertion_point(struct:google_firestore_v1_Document_FieldsEntry) */
 } google_firestore_v1_Document_FieldsEntry;
 
+typedef struct _google_firestore_v1_Function_OptionsEntry {
+    pb_bytes_array_t *key;
+    google_firestore_v1_Value value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Function_OptionsEntry) */
+} google_firestore_v1_Function_OptionsEntry;
+
 typedef struct _google_firestore_v1_MapValue_FieldsEntry {
     pb_bytes_array_t *key;
     google_firestore_v1_Value value;
@@ -103,6 +146,14 @@ typedef struct _google_firestore_v1_MapValue_FieldsEntry {
 /* @@protoc_insertion_point(struct:google_firestore_v1_MapValue_FieldsEntry) */
 } google_firestore_v1_MapValue_FieldsEntry;
 
+typedef struct _google_firestore_v1_Pipeline_Stage_OptionsEntry {
+    pb_bytes_array_t *key;
+    google_firestore_v1_Value value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Pipeline_Stage_OptionsEntry) */
+} google_firestore_v1_Pipeline_Stage_OptionsEntry;
+
 /* Default values for struct fields */
 
 /* Initializer values for message structs */
@@ -112,16 +163,33 @@ typedef struct _google_firestore_v1_MapValue_FieldsEntry {
 #define google_firestore_v1_ArrayValue_init_default {0, NULL}
 #define google_firestore_v1_MapValue_init_default {0, NULL}
 #define google_firestore_v1_MapValue_FieldsEntry_init_default {NULL, google_firestore_v1_Value_init_default}
+#define google_firestore_v1_Function_init_default {NULL, 0, NULL, 0, NULL}
+#define google_firestore_v1_Function_OptionsEntry_init_default {NULL, google_firestore_v1_Value_init_default}
+#define google_firestore_v1_Pipeline_init_default {0, NULL}
+#define google_firestore_v1_Pipeline_Stage_init_default {NULL, 0, NULL, 0, NULL}
+#define google_firestore_v1_Pipeline_Stage_OptionsEntry_init_default {NULL, google_firestore_v1_Value_init_default}
 #define google_firestore_v1_Document_init_zero   {NULL, 0, NULL, google_protobuf_Timestamp_init_zero, false, google_protobuf_Timestamp_init_zero}
 #define google_firestore_v1_Document_FieldsEntry_init_zero {NULL, google_firestore_v1_Value_init_zero}
 #define google_firestore_v1_Value_init_zero      {0, {0}}
 #define google_firestore_v1_ArrayValue_init_zero {0, NULL}
 #define google_firestore_v1_MapValue_init_zero   {0, NULL}
 #define google_firestore_v1_MapValue_FieldsEntry_init_zero {NULL, google_firestore_v1_Value_init_zero}
+#define google_firestore_v1_Function_init_zero   {NULL, 0, NULL, 0, NULL}
+#define google_firestore_v1_Function_OptionsEntry_init_zero {NULL, google_firestore_v1_Value_init_zero}
+#define google_firestore_v1_Pipeline_init_zero   {0, NULL}
+#define google_firestore_v1_Pipeline_Stage_init_zero {NULL, 0, NULL, 0, NULL}
+#define google_firestore_v1_Pipeline_Stage_OptionsEntry_init_zero {NULL, google_firestore_v1_Value_init_zero}
 
 /* Field tags (for use in manual encoding/decoding) */
 #define google_firestore_v1_ArrayValue_values_tag 1
+#define google_firestore_v1_Function_name_tag    1
+#define google_firestore_v1_Function_args_tag    2
+#define google_firestore_v1_Function_options_tag 3
 #define google_firestore_v1_MapValue_fields_tag  1
+#define google_firestore_v1_Pipeline_stages_tag  1
+#define google_firestore_v1_Pipeline_Stage_name_tag 1
+#define google_firestore_v1_Pipeline_Stage_args_tag 2
+#define google_firestore_v1_Pipeline_Stage_options_tag 3
 #define google_firestore_v1_Document_name_tag    1
 #define google_firestore_v1_Document_fields_tag  2
 #define google_firestore_v1_Document_create_time_tag 3
@@ -137,18 +205,30 @@ typedef struct _google_firestore_v1_MapValue_FieldsEntry {
 #define google_firestore_v1_Value_null_value_tag 11
 #define google_firestore_v1_Value_string_value_tag 17
 #define google_firestore_v1_Value_bytes_value_tag 18
+#define google_firestore_v1_Value_field_reference_value_tag 19
+#define google_firestore_v1_Value_function_value_tag 20
+#define google_firestore_v1_Value_pipeline_value_tag 21
 #define google_firestore_v1_Document_FieldsEntry_key_tag 1
 #define google_firestore_v1_Document_FieldsEntry_value_tag 2
+#define google_firestore_v1_Function_OptionsEntry_key_tag 1
+#define google_firestore_v1_Function_OptionsEntry_value_tag 2
 #define google_firestore_v1_MapValue_FieldsEntry_key_tag 1
 #define google_firestore_v1_MapValue_FieldsEntry_value_tag 2
+#define google_firestore_v1_Pipeline_Stage_OptionsEntry_key_tag 1
+#define google_firestore_v1_Pipeline_Stage_OptionsEntry_value_tag 2
 
 /* Struct field encoding specification for nanopb */
 extern const pb_field_t google_firestore_v1_Document_fields[5];
 extern const pb_field_t google_firestore_v1_Document_FieldsEntry_fields[3];
-extern const pb_field_t google_firestore_v1_Value_fields[12];
+extern const pb_field_t google_firestore_v1_Value_fields[15];
 extern const pb_field_t google_firestore_v1_ArrayValue_fields[2];
 extern const pb_field_t google_firestore_v1_MapValue_fields[2];
 extern const pb_field_t google_firestore_v1_MapValue_FieldsEntry_fields[3];
+extern const pb_field_t google_firestore_v1_Function_fields[4];
+extern const pb_field_t google_firestore_v1_Function_OptionsEntry_fields[3];
+extern const pb_field_t google_firestore_v1_Pipeline_fields[2];
+extern const pb_field_t google_firestore_v1_Pipeline_Stage_fields[4];
+extern const pb_field_t google_firestore_v1_Pipeline_Stage_OptionsEntry_fields[3];
 
 /* Maximum encoded size of messages (where known) */
 /* google_firestore_v1_Document_size depends on runtime parameters */
@@ -157,6 +237,11 @@ extern const pb_field_t google_firestore_v1_MapValue_FieldsEntry_fields[3];
 /* google_firestore_v1_ArrayValue_size depends on runtime parameters */
 /* google_firestore_v1_MapValue_size depends on runtime parameters */
 /* google_firestore_v1_MapValue_FieldsEntry_size depends on runtime parameters */
+/* google_firestore_v1_Function_size depends on runtime parameters */
+/* google_firestore_v1_Function_OptionsEntry_size depends on runtime parameters */
+/* google_firestore_v1_Pipeline_size depends on runtime parameters */
+/* google_firestore_v1_Pipeline_Stage_size depends on runtime parameters */
+/* google_firestore_v1_Pipeline_Stage_OptionsEntry_size depends on runtime parameters */
 
 /* Message IDs (where set with "msgid" option) */
 #ifdef PB_MSGID
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/explain_stats.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/explain_stats.nanopb.cc
new file mode 100644
index 00000000000..60d7cfab731
--- /dev/null
+++ b/Firestore/Protos/nanopb/google/firestore/v1/explain_stats.nanopb.cc
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "explain_stats.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_firestore_v1_ExplainStats_fields[2] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_ExplainStats, data, data, &google_protobuf_Any_fields),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_ExplainStats, data) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_ExplainStats)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_ExplainStats, data) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_ExplainStats)
+#endif
+
+
+std::string google_firestore_v1_ExplainStats::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "ExplainStats", this);
+    std::string tostring_result;
+
+    tostring_result += PrintMessageField("data ", data, indent + 1, false);
+
+    std::string tostring_tail = PrintTail(indent);
+    return tostring_header + tostring_result + tostring_tail;
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/explain_stats.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/explain_stats.nanopb.h
new file mode 100644
index 00000000000..f97eb64ee51
--- /dev/null
+++ b/Firestore/Protos/nanopb/google/firestore/v1/explain_stats.nanopb.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_FIRESTORE_V1_EXPLAIN_STATS_NANOPB_H_INCLUDED
+#define PB_GOOGLE_FIRESTORE_V1_EXPLAIN_STATS_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/protobuf/any.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_firestore_v1_ExplainStats {
+    google_protobuf_Any data;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ExplainStats) */
+} google_firestore_v1_ExplainStats;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_firestore_v1_ExplainStats_init_default {google_protobuf_Any_init_default}
+#define google_firestore_v1_ExplainStats_init_zero {google_protobuf_Any_init_zero}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_firestore_v1_ExplainStats_data_tag 1
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_firestore_v1_ExplainStats_fields[2];
+
+/* Maximum encoded size of messages (where known) */
+#define google_firestore_v1_ExplainStats_size    (6 + google_protobuf_Any_size)
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define EXPLAIN_STATS_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.cc
index 233d2025dc9..fabd2343097 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -152,6 +152,23 @@ const pb_field_t google_firestore_v1_RunQueryResponse_fields[5] = {
     PB_LAST_FIELD
 };
 
+const pb_field_t google_firestore_v1_ExecutePipelineRequest_fields[6] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_ExecutePipelineRequest, database, database, 0),
+    PB_ONEOF_FIELD(pipeline_type,   2, MESSAGE , ONEOF, STATIC  , OTHER, google_firestore_v1_ExecutePipelineRequest, structured_pipeline, database, &google_firestore_v1_StructuredPipeline_fields),
+    PB_ONEOF_FIELD(consistency_selector,   5, BYTES   , ONEOF, POINTER , OTHER, google_firestore_v1_ExecutePipelineRequest, transaction, pipeline_type.structured_pipeline, 0),
+    PB_ONEOF_FIELD(consistency_selector,   6, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_ExecutePipelineRequest, new_transaction, pipeline_type.structured_pipeline, &google_firestore_v1_TransactionOptions_fields),
+    PB_ONEOF_FIELD(consistency_selector,   7, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_ExecutePipelineRequest, read_time, pipeline_type.structured_pipeline, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ExecutePipelineResponse_fields[5] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_ExecutePipelineResponse, transaction, transaction, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_ExecutePipelineResponse, results, transaction, &google_firestore_v1_Document_fields),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_ExecutePipelineResponse, execution_time, results, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  4, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_ExecutePipelineResponse, explain_stats, execution_time, &google_firestore_v1_ExplainStats_fields),
+    PB_LAST_FIELD
+};
+
 const pb_field_t google_firestore_v1_RunAggregationQueryRequest_fields[6] = {
     PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_RunAggregationQueryRequest, parent, parent, 0),
     PB_ONEOF_FIELD(query_type,   2, MESSAGE , ONEOF, STATIC  , OTHER, google_firestore_v1_RunAggregationQueryRequest, structured_aggregation_query, parent, &google_firestore_v1_StructuredAggregationQuery_fields),
@@ -269,7 +286,7 @@ const pb_field_t google_firestore_v1_ListCollectionIdsResponse_fields[3] = {
  * numbers or field sizes that are larger than what can fit in 8 or 16 bit
  * field descriptors.
  */
-PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_GetDocumentRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_GetDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_ListDocumentsRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_ListDocumentsRequest, mask) < 65536 && pb_membersize(google_firestore_v1_CreateDocumentRequest, document) < 65536 && pb_membersize(google_firestore_v1_CreateDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, document) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, update_mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, current_document) < 65536 && pb_membersize(google_firestore_v1_DeleteDocumentRequest, current_document) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, new_transaction) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, mask) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, found) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_BeginTransactionRequest, options) < 65536 && pb_membersize(google_firestore_v1_CommitResponse, commit_time) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, query_type.structured_query) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.new_transaction) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.read_time) < 65536 && pb_membersize(google_firestore_v1_RunQueryResponse, document) < 65536 && pb_membersize(google_firestore_v1_RunQueryResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, query_type.structured_aggregation_query) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.new_transaction) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.read_time) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, result) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_WriteResponse, commit_time) < 65536 && pb_membersize(google_firestore_v1_ListenRequest, add_target) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, target_change) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_change) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_delete) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, filter) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_remove) < 65536 && pb_membersize(google_firestore_v1_Target, target_type.query) < 65536 && pb_membersize(google_firestore_v1_Target, target_type.documents) < 65536 && pb_membersize(google_firestore_v1_Target, resume_type.read_time) < 65536 && pb_membersize(google_firestore_v1_Target, expected_count) < 65536 && pb_membersize(google_firestore_v1_Target_QueryTarget, structured_query) < 65536 && pb_membersize(google_firestore_v1_TargetChange, cause) < 65536 && pb_membersize(google_firestore_v1_TargetChange, read_time) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_GetDocumentRequest_google_firestore_v1_ListDocumentsRequest_google_firestore_v1_ListDocumentsResponse_google_firestore_v1_CreateDocumentRequest_google_firestore_v1_UpdateDocumentRequest_google_firestore_v1_DeleteDocumentRequest_google_firestore_v1_BatchGetDocumentsRequest_google_firestore_v1_BatchGetDocumentsResponse_google_firestore_v1_BeginTransactionRequest_google_firestore_v1_BeginTransactionResponse_google_firestore_v1_CommitRequest_google_firestore_v1_CommitResponse_google_firestore_v1_RollbackRequest_google_firestore_v1_RunQueryRequest_google_firestore_v1_RunQueryResponse_google_firestore_v1_RunAggregationQueryRequest_google_firestore_v1_RunAggregationQueryResponse_google_firestore_v1_WriteRequest_google_firestore_v1_WriteRequest_LabelsEntry_google_firestore_v1_WriteResponse_google_firestore_v1_ListenRequest_google_firestore_v1_ListenRequest_LabelsEntry_google_firestore_v1_ListenResponse_google_firestore_v1_Target_google_firestore_v1_Target_DocumentsTarget_google_firestore_v1_Target_QueryTarget_google_firestore_v1_TargetChange_google_firestore_v1_ListCollectionIdsRequest_google_firestore_v1_ListCollectionIdsResponse)
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_GetDocumentRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_GetDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_ListDocumentsRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_ListDocumentsRequest, mask) < 65536 && pb_membersize(google_firestore_v1_CreateDocumentRequest, document) < 65536 && pb_membersize(google_firestore_v1_CreateDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, document) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, update_mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, current_document) < 65536 && pb_membersize(google_firestore_v1_DeleteDocumentRequest, current_document) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, new_transaction) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, mask) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, found) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_BeginTransactionRequest, options) < 65536 && pb_membersize(google_firestore_v1_CommitResponse, commit_time) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, query_type.structured_query) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.new_transaction) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.read_time) < 65536 && pb_membersize(google_firestore_v1_RunQueryResponse, document) < 65536 && pb_membersize(google_firestore_v1_RunQueryResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_ExecutePipelineRequest, pipeline_type.structured_pipeline) < 65536 && pb_membersize(google_firestore_v1_ExecutePipelineRequest, consistency_selector.new_transaction) < 65536 && pb_membersize(google_firestore_v1_ExecutePipelineRequest, consistency_selector.read_time) < 65536 && pb_membersize(google_firestore_v1_ExecutePipelineResponse, execution_time) < 65536 && pb_membersize(google_firestore_v1_ExecutePipelineResponse, explain_stats) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, query_type.structured_aggregation_query) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.new_transaction) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.read_time) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, result) < 65536 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_WriteResponse, commit_time) < 65536 && pb_membersize(google_firestore_v1_ListenRequest, add_target) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, target_change) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_change) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_delete) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, filter) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_remove) < 65536 && pb_membersize(google_firestore_v1_Target, target_type.query) < 65536 && pb_membersize(google_firestore_v1_Target, target_type.documents) < 65536 && pb_membersize(google_firestore_v1_Target, resume_type.read_time) < 65536 && pb_membersize(google_firestore_v1_Target, expected_count) < 65536 && pb_membersize(google_firestore_v1_Target_QueryTarget, structured_query) < 65536 && pb_membersize(google_firestore_v1_TargetChange, cause) < 65536 && pb_membersize(google_firestore_v1_TargetChange, read_time) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_GetDocumentRequest_google_firestore_v1_ListDocumentsRequest_google_firestore_v1_ListDocumentsResponse_google_firestore_v1_CreateDocumentRequest_google_firestore_v1_UpdateDocumentRequest_google_firestore_v1_DeleteDocumentRequest_google_firestore_v1_BatchGetDocumentsRequest_google_firestore_v1_BatchGetDocumentsResponse_google_firestore_v1_BeginTransactionRequest_google_firestore_v1_BeginTransactionResponse_google_firestore_v1_CommitRequest_google_firestore_v1_CommitResponse_google_firestore_v1_RollbackRequest_google_firestore_v1_RunQueryRequest_google_firestore_v1_RunQueryResponse_google_firestore_v1_ExecutePipelineRequest_google_firestore_v1_ExecutePipelineResponse_google_firestore_v1_RunAggregationQueryRequest_google_firestore_v1_RunAggregationQueryResponse_google_firestore_v1_WriteRequest_google_firestore_v1_WriteRequest_LabelsEntry_google_firestore_v1_WriteResponse_google_firestore_v1_ListenRequest_google_firestore_v1_ListenRequest_LabelsEntry_google_firestore_v1_ListenResponse_google_firestore_v1_Target_google_firestore_v1_Target_DocumentsTarget_google_firestore_v1_Target_QueryTarget_google_firestore_v1_TargetChange_google_firestore_v1_ListCollectionIdsRequest_google_firestore_v1_ListCollectionIdsResponse)
 #endif
 
 #if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
@@ -280,7 +297,7 @@ PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_GetDocumentRequest, read_tim
  * numbers or field sizes that are larger than what can fit in the default
  * 8 bit descriptors.
  */
-PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_GetDocumentRequest, read_time) < 256 && pb_membersize(google_firestore_v1_GetDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_ListDocumentsRequest, read_time) < 256 && pb_membersize(google_firestore_v1_ListDocumentsRequest, mask) < 256 && pb_membersize(google_firestore_v1_CreateDocumentRequest, document) < 256 && pb_membersize(google_firestore_v1_CreateDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, document) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, update_mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, current_document) < 256 && pb_membersize(google_firestore_v1_DeleteDocumentRequest, current_document) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, new_transaction) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, read_time) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, mask) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, found) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, read_time) < 256 && pb_membersize(google_firestore_v1_BeginTransactionRequest, options) < 256 && pb_membersize(google_firestore_v1_CommitResponse, commit_time) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, query_type.structured_query) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.new_transaction) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.read_time) < 256 && pb_membersize(google_firestore_v1_RunQueryResponse, document) < 256 && pb_membersize(google_firestore_v1_RunQueryResponse, read_time) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, query_type.structured_aggregation_query) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.new_transaction) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.read_time) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, result) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, read_time) < 256 && pb_membersize(google_firestore_v1_WriteResponse, commit_time) < 256 && pb_membersize(google_firestore_v1_ListenRequest, add_target) < 256 && pb_membersize(google_firestore_v1_ListenResponse, target_change) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_change) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_delete) < 256 && pb_membersize(google_firestore_v1_ListenResponse, filter) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_remove) < 256 && pb_membersize(google_firestore_v1_Target, target_type.query) < 256 && pb_membersize(google_firestore_v1_Target, target_type.documents) < 256 && pb_membersize(google_firestore_v1_Target, resume_type.read_time) < 256 && pb_membersize(google_firestore_v1_Target, expected_count) < 256 && pb_membersize(google_firestore_v1_Target_QueryTarget, structured_query) < 256 && pb_membersize(google_firestore_v1_TargetChange, cause) < 256 && pb_membersize(google_firestore_v1_TargetChange, read_time) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_GetDocumentRequest_google_firestore_v1_ListDocumentsRequest_google_firestore_v1_ListDocumentsResponse_google_firestore_v1_CreateDocumentRequest_google_firestore_v1_UpdateDocumentRequest_google_firestore_v1_DeleteDocumentRequest_google_firestore_v1_BatchGetDocumentsRequest_google_firestore_v1_BatchGetDocumentsResponse_google_firestore_v1_BeginTransactionRequest_google_firestore_v1_BeginTransactionResponse_google_firestore_v1_CommitRequest_google_firestore_v1_CommitResponse_google_firestore_v1_RollbackRequest_google_firestore_v1_RunQueryRequest_google_firestore_v1_RunQueryResponse_google_firestore_v1_RunAggregationQueryRequest_google_firestore_v1_RunAggregationQueryResponse_google_firestore_v1_WriteRequest_google_firestore_v1_WriteRequest_LabelsEntry_google_firestore_v1_WriteResponse_google_firestore_v1_ListenRequest_google_firestore_v1_ListenRequest_LabelsEntry_google_firestore_v1_ListenResponse_google_firestore_v1_Target_google_firestore_v1_Target_DocumentsTarget_google_firestore_v1_Target_QueryTarget_google_firestore_v1_TargetChange_google_firestore_v1_ListCollectionIdsRequest_google_firestore_v1_ListCollectionIdsResponse)
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_GetDocumentRequest, read_time) < 256 && pb_membersize(google_firestore_v1_GetDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_ListDocumentsRequest, read_time) < 256 && pb_membersize(google_firestore_v1_ListDocumentsRequest, mask) < 256 && pb_membersize(google_firestore_v1_CreateDocumentRequest, document) < 256 && pb_membersize(google_firestore_v1_CreateDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, document) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, update_mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, current_document) < 256 && pb_membersize(google_firestore_v1_DeleteDocumentRequest, current_document) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, new_transaction) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, read_time) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, mask) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, found) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, read_time) < 256 && pb_membersize(google_firestore_v1_BeginTransactionRequest, options) < 256 && pb_membersize(google_firestore_v1_CommitResponse, commit_time) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, query_type.structured_query) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.new_transaction) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.read_time) < 256 && pb_membersize(google_firestore_v1_RunQueryResponse, document) < 256 && pb_membersize(google_firestore_v1_RunQueryResponse, read_time) < 256 && pb_membersize(google_firestore_v1_ExecutePipelineRequest, pipeline_type.structured_pipeline) < 256 && pb_membersize(google_firestore_v1_ExecutePipelineRequest, consistency_selector.new_transaction) < 256 && pb_membersize(google_firestore_v1_ExecutePipelineRequest, consistency_selector.read_time) < 256 && pb_membersize(google_firestore_v1_ExecutePipelineResponse, execution_time) < 256 && pb_membersize(google_firestore_v1_ExecutePipelineResponse, explain_stats) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, query_type.structured_aggregation_query) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.new_transaction) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryRequest, consistency_selector.read_time) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, result) < 256 && pb_membersize(google_firestore_v1_RunAggregationQueryResponse, read_time) < 256 && pb_membersize(google_firestore_v1_WriteResponse, commit_time) < 256 && pb_membersize(google_firestore_v1_ListenRequest, add_target) < 256 && pb_membersize(google_firestore_v1_ListenResponse, target_change) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_change) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_delete) < 256 && pb_membersize(google_firestore_v1_ListenResponse, filter) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_remove) < 256 && pb_membersize(google_firestore_v1_Target, target_type.query) < 256 && pb_membersize(google_firestore_v1_Target, target_type.documents) < 256 && pb_membersize(google_firestore_v1_Target, resume_type.read_time) < 256 && pb_membersize(google_firestore_v1_Target, expected_count) < 256 && pb_membersize(google_firestore_v1_Target_QueryTarget, structured_query) < 256 && pb_membersize(google_firestore_v1_TargetChange, cause) < 256 && pb_membersize(google_firestore_v1_TargetChange, read_time) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_GetDocumentRequest_google_firestore_v1_ListDocumentsRequest_google_firestore_v1_ListDocumentsResponse_google_firestore_v1_CreateDocumentRequest_google_firestore_v1_UpdateDocumentRequest_google_firestore_v1_DeleteDocumentRequest_google_firestore_v1_BatchGetDocumentsRequest_google_firestore_v1_BatchGetDocumentsResponse_google_firestore_v1_BeginTransactionRequest_google_firestore_v1_BeginTransactionResponse_google_firestore_v1_CommitRequest_google_firestore_v1_CommitResponse_google_firestore_v1_RollbackRequest_google_firestore_v1_RunQueryRequest_google_firestore_v1_RunQueryResponse_google_firestore_v1_ExecutePipelineRequest_google_firestore_v1_ExecutePipelineResponse_google_firestore_v1_RunAggregationQueryRequest_google_firestore_v1_RunAggregationQueryResponse_google_firestore_v1_WriteRequest_google_firestore_v1_WriteRequest_LabelsEntry_google_firestore_v1_WriteResponse_google_firestore_v1_ListenRequest_google_firestore_v1_ListenRequest_LabelsEntry_google_firestore_v1_ListenResponse_google_firestore_v1_Target_google_firestore_v1_Target_DocumentsTarget_google_firestore_v1_Target_QueryTarget_google_firestore_v1_TargetChange_google_firestore_v1_ListCollectionIdsRequest_google_firestore_v1_ListCollectionIdsResponse)
 #endif
 
 
@@ -610,6 +627,61 @@ std::string google_firestore_v1_RunQueryResponse::ToString(int indent) const {
     return tostring_header + tostring_result + tostring_tail;
 }
 
+std::string google_firestore_v1_ExecutePipelineRequest::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "ExecutePipelineRequest", this);
+    std::string tostring_result;
+
+    tostring_result += PrintPrimitiveField("database: ",
+        database, indent + 1, false);
+    switch (which_pipeline_type) {
+    case google_firestore_v1_ExecutePipelineRequest_structured_pipeline_tag:
+        tostring_result += PrintMessageField("structured_pipeline ",
+            pipeline_type.structured_pipeline, indent + 1, true);
+        break;
+    }
+    switch (which_consistency_selector) {
+    case google_firestore_v1_ExecutePipelineRequest_transaction_tag:
+        tostring_result += PrintPrimitiveField("transaction: ",
+            consistency_selector.transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_ExecutePipelineRequest_new_transaction_tag:
+        tostring_result += PrintMessageField("new_transaction ",
+            consistency_selector.new_transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_ExecutePipelineRequest_read_time_tag:
+        tostring_result += PrintMessageField("read_time ",
+            consistency_selector.read_time, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!tostring_result.empty() || is_root) {
+      std::string tostring_tail = PrintTail(indent);
+      return tostring_header + tostring_result + tostring_tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_ExecutePipelineResponse::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "ExecutePipelineResponse", this);
+    std::string tostring_result;
+
+    tostring_result += PrintPrimitiveField("transaction: ",
+        transaction, indent + 1, false);
+    for (pb_size_t i = 0; i != results_count; ++i) {
+        tostring_result += PrintMessageField("results ",
+            results[i], indent + 1, true);
+    }
+    tostring_result += PrintMessageField("execution_time ",
+        execution_time, indent + 1, false);
+    tostring_result += PrintMessageField("explain_stats ",
+        explain_stats, indent + 1, false);
+
+    std::string tostring_tail = PrintTail(indent);
+    return tostring_header + tostring_result + tostring_tail;
+}
+
 std::string google_firestore_v1_RunAggregationQueryRequest::ToString(int indent) const {
     std::string tostring_header = PrintHeader(indent, "RunAggregationQueryRequest", this);
     std::string tostring_result;
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h
index 3dd603a5b09..a6d32a0862d 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,12 +23,18 @@
 
 #include "google/api/annotations.nanopb.h"
 
+#include "google/api/field_behavior.nanopb.h"
+
 #include "google/firestore/v1/aggregation_result.nanopb.h"
 
 #include "google/firestore/v1/common.nanopb.h"
 
 #include "google/firestore/v1/document.nanopb.h"
 
+#include "google/firestore/v1/explain_stats.nanopb.h"
+
+#include "google/firestore/v1/pipeline.nanopb.h"
+
 #include "google/firestore/v1/query.nanopb.h"
 
 #include "google/firestore/v1/write.nanopb.h"
@@ -210,6 +216,34 @@ typedef struct _google_firestore_v1_DeleteDocumentRequest {
 /* @@protoc_insertion_point(struct:google_firestore_v1_DeleteDocumentRequest) */
 } google_firestore_v1_DeleteDocumentRequest;
 
+typedef struct _google_firestore_v1_ExecutePipelineRequest {
+    pb_bytes_array_t *database;
+    pb_size_t which_pipeline_type;
+    union {
+        google_firestore_v1_StructuredPipeline structured_pipeline;
+    } pipeline_type;
+    pb_size_t which_consistency_selector;
+    union {
+        pb_bytes_array_t *transaction;
+        google_firestore_v1_TransactionOptions new_transaction;
+        google_protobuf_Timestamp read_time;
+    } consistency_selector;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ExecutePipelineRequest) */
+} google_firestore_v1_ExecutePipelineRequest;
+
+typedef struct _google_firestore_v1_ExecutePipelineResponse {
+    pb_bytes_array_t *transaction;
+    pb_size_t results_count;
+    struct _google_firestore_v1_Document *results;
+    google_protobuf_Timestamp execution_time;
+    google_firestore_v1_ExplainStats explain_stats;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ExecutePipelineResponse) */
+} google_firestore_v1_ExecutePipelineResponse;
+
 typedef struct _google_firestore_v1_GetDocumentRequest {
     pb_bytes_array_t *name;
     google_firestore_v1_DocumentMask mask;
@@ -414,6 +448,8 @@ typedef struct _google_firestore_v1_ListenRequest {
 #define google_firestore_v1_RollbackRequest_init_default {NULL, NULL}
 #define google_firestore_v1_RunQueryRequest_init_default {NULL, 0, {google_firestore_v1_StructuredQuery_init_default}, 0, {NULL}}
 #define google_firestore_v1_RunQueryResponse_init_default {google_firestore_v1_Document_init_default, NULL, google_protobuf_Timestamp_init_default, 0}
+#define google_firestore_v1_ExecutePipelineRequest_init_default {NULL, 0, {google_firestore_v1_StructuredPipeline_init_default}, 0, {NULL}}
+#define google_firestore_v1_ExecutePipelineResponse_init_default {NULL, 0, NULL, google_protobuf_Timestamp_init_default, google_firestore_v1_ExplainStats_init_default}
 #define google_firestore_v1_RunAggregationQueryRequest_init_default {NULL, 0, {google_firestore_v1_StructuredAggregationQuery_init_default}, 0, {NULL}}
 #define google_firestore_v1_RunAggregationQueryResponse_init_default {google_firestore_v1_AggregationResult_init_default, NULL, google_protobuf_Timestamp_init_default}
 #define google_firestore_v1_WriteRequest_init_default {NULL, NULL, 0, NULL, NULL, 0, NULL}
@@ -443,6 +479,8 @@ typedef struct _google_firestore_v1_ListenRequest {
 #define google_firestore_v1_RollbackRequest_init_zero {NULL, NULL}
 #define google_firestore_v1_RunQueryRequest_init_zero {NULL, 0, {google_firestore_v1_StructuredQuery_init_zero}, 0, {NULL}}
 #define google_firestore_v1_RunQueryResponse_init_zero {google_firestore_v1_Document_init_zero, NULL, google_protobuf_Timestamp_init_zero, 0}
+#define google_firestore_v1_ExecutePipelineRequest_init_zero {NULL, 0, {google_firestore_v1_StructuredPipeline_init_zero}, 0, {NULL}}
+#define google_firestore_v1_ExecutePipelineResponse_init_zero {NULL, 0, NULL, google_protobuf_Timestamp_init_zero, google_firestore_v1_ExplainStats_init_zero}
 #define google_firestore_v1_RunAggregationQueryRequest_init_zero {NULL, 0, {google_firestore_v1_StructuredAggregationQuery_init_zero}, 0, {NULL}}
 #define google_firestore_v1_RunAggregationQueryResponse_init_zero {google_firestore_v1_AggregationResult_init_zero, NULL, google_protobuf_Timestamp_init_zero}
 #define google_firestore_v1_WriteRequest_init_zero {NULL, NULL, 0, NULL, NULL, 0, NULL}
@@ -500,6 +538,15 @@ typedef struct _google_firestore_v1_ListenRequest {
 #define google_firestore_v1_CreateDocumentRequest_mask_tag 5
 #define google_firestore_v1_DeleteDocumentRequest_name_tag 1
 #define google_firestore_v1_DeleteDocumentRequest_current_document_tag 2
+#define google_firestore_v1_ExecutePipelineRequest_structured_pipeline_tag 2
+#define google_firestore_v1_ExecutePipelineRequest_transaction_tag 5
+#define google_firestore_v1_ExecutePipelineRequest_new_transaction_tag 6
+#define google_firestore_v1_ExecutePipelineRequest_read_time_tag 7
+#define google_firestore_v1_ExecutePipelineRequest_database_tag 1
+#define google_firestore_v1_ExecutePipelineResponse_transaction_tag 1
+#define google_firestore_v1_ExecutePipelineResponse_results_tag 2
+#define google_firestore_v1_ExecutePipelineResponse_execution_time_tag 3
+#define google_firestore_v1_ExecutePipelineResponse_explain_stats_tag 4
 #define google_firestore_v1_GetDocumentRequest_transaction_tag 3
 #define google_firestore_v1_GetDocumentRequest_read_time_tag 5
 #define google_firestore_v1_GetDocumentRequest_name_tag 1
@@ -581,6 +628,8 @@ extern const pb_field_t google_firestore_v1_CommitResponse_fields[3];
 extern const pb_field_t google_firestore_v1_RollbackRequest_fields[3];
 extern const pb_field_t google_firestore_v1_RunQueryRequest_fields[6];
 extern const pb_field_t google_firestore_v1_RunQueryResponse_fields[5];
+extern const pb_field_t google_firestore_v1_ExecutePipelineRequest_fields[6];
+extern const pb_field_t google_firestore_v1_ExecutePipelineResponse_fields[5];
 extern const pb_field_t google_firestore_v1_RunAggregationQueryRequest_fields[6];
 extern const pb_field_t google_firestore_v1_RunAggregationQueryResponse_fields[4];
 extern const pb_field_t google_firestore_v1_WriteRequest_fields[6];
@@ -612,6 +661,8 @@ extern const pb_field_t google_firestore_v1_ListCollectionIdsResponse_fields[3];
 /* google_firestore_v1_RollbackRequest_size depends on runtime parameters */
 /* google_firestore_v1_RunQueryRequest_size depends on runtime parameters */
 /* google_firestore_v1_RunQueryResponse_size depends on runtime parameters */
+/* google_firestore_v1_ExecutePipelineRequest_size depends on runtime parameters */
+/* google_firestore_v1_ExecutePipelineResponse_size depends on runtime parameters */
 /* google_firestore_v1_RunAggregationQueryRequest_size depends on runtime parameters */
 /* google_firestore_v1_RunAggregationQueryResponse_size depends on runtime parameters */
 /* google_firestore_v1_WriteRequest_size depends on runtime parameters */
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/pipeline.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/pipeline.nanopb.cc
new file mode 100644
index 00000000000..96739c3630c
--- /dev/null
+++ b/Firestore/Protos/nanopb/google/firestore/v1/pipeline.nanopb.cc
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "pipeline.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_firestore_v1_StructuredPipeline_fields[3] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_StructuredPipeline, pipeline, pipeline, &google_firestore_v1_Pipeline_fields),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_StructuredPipeline, options, pipeline, &google_firestore_v1_StructuredPipeline_OptionsEntry_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredPipeline_OptionsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_StructuredPipeline_OptionsEntry, key, key, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredPipeline_OptionsEntry, value, key, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_StructuredPipeline, pipeline) < 65536 && pb_membersize(google_firestore_v1_StructuredPipeline_OptionsEntry, value) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_StructuredPipeline_google_firestore_v1_StructuredPipeline_OptionsEntry)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_StructuredPipeline, pipeline) < 256 && pb_membersize(google_firestore_v1_StructuredPipeline_OptionsEntry, value) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_StructuredPipeline_google_firestore_v1_StructuredPipeline_OptionsEntry)
+#endif
+
+
+std::string google_firestore_v1_StructuredPipeline::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "StructuredPipeline", this);
+    std::string tostring_result;
+
+    tostring_result += PrintMessageField("pipeline ",
+        pipeline, indent + 1, false);
+    for (pb_size_t i = 0; i != options_count; ++i) {
+        tostring_result += PrintMessageField("options ",
+            options[i], indent + 1, true);
+    }
+
+    std::string tostring_tail = PrintTail(indent);
+    return tostring_header + tostring_result + tostring_tail;
+}
+
+std::string google_firestore_v1_StructuredPipeline_OptionsEntry::ToString(int indent) const {
+    std::string tostring_header = PrintHeader(indent, "OptionsEntry", this);
+    std::string tostring_result;
+
+    tostring_result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    tostring_result += PrintMessageField("value ", value, indent + 1, false);
+
+    std::string tostring_tail = PrintTail(indent);
+    return tostring_header + tostring_result + tostring_tail;
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/pipeline.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/pipeline.nanopb.h
new file mode 100644
index 00000000000..df88e827f68
--- /dev/null
+++ b/Firestore/Protos/nanopb/google/firestore/v1/pipeline.nanopb.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_FIRESTORE_V1_PIPELINE_NANOPB_H_INCLUDED
+#define PB_GOOGLE_FIRESTORE_V1_PIPELINE_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/api/field_behavior.nanopb.h"
+
+#include "google/firestore/v1/document.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_firestore_v1_StructuredPipeline {
+    google_firestore_v1_Pipeline pipeline;
+    pb_size_t options_count;
+    struct _google_firestore_v1_StructuredPipeline_OptionsEntry *options;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredPipeline) */
+} google_firestore_v1_StructuredPipeline;
+
+typedef struct _google_firestore_v1_StructuredPipeline_OptionsEntry {
+    pb_bytes_array_t *key;
+    google_firestore_v1_Value value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredPipeline_OptionsEntry) */
+} google_firestore_v1_StructuredPipeline_OptionsEntry;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_firestore_v1_StructuredPipeline_init_default {google_firestore_v1_Pipeline_init_default, 0, NULL}
+#define google_firestore_v1_StructuredPipeline_OptionsEntry_init_default {NULL, google_firestore_v1_Value_init_default}
+#define google_firestore_v1_StructuredPipeline_init_zero {google_firestore_v1_Pipeline_init_zero, 0, NULL}
+#define google_firestore_v1_StructuredPipeline_OptionsEntry_init_zero {NULL, google_firestore_v1_Value_init_zero}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_firestore_v1_StructuredPipeline_pipeline_tag 1
+#define google_firestore_v1_StructuredPipeline_options_tag 2
+#define google_firestore_v1_StructuredPipeline_OptionsEntry_key_tag 1
+#define google_firestore_v1_StructuredPipeline_OptionsEntry_value_tag 2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_firestore_v1_StructuredPipeline_fields[3];
+extern const pb_field_t google_firestore_v1_StructuredPipeline_OptionsEntry_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* google_firestore_v1_StructuredPipeline_size depends on runtime parameters */
+/* google_firestore_v1_StructuredPipeline_OptionsEntry_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define PIPELINE_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.cc
index decd34e2ca2..ca3ce6c85d6 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.h
index cac63add141..b54d343853f 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.cc b/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.cc
index d423c292d4a..1f4a31bb164 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.h b/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.h
index 0db9c6d2874..9fd6d1688bd 100644
--- a/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.h
+++ b/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/any.nanopb.cc b/Firestore/Protos/nanopb/google/protobuf/any.nanopb.cc
index 2a57547086a..5efdaf04dd4 100644
--- a/Firestore/Protos/nanopb/google/protobuf/any.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/protobuf/any.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/any.nanopb.h b/Firestore/Protos/nanopb/google/protobuf/any.nanopb.h
index c06c82ca2db..5a418826834 100644
--- a/Firestore/Protos/nanopb/google/protobuf/any.nanopb.h
+++ b/Firestore/Protos/nanopb/google/protobuf/any.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.cc b/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.cc
index ea00f4e2640..bc43bb31233 100644
--- a/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.h b/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.h
index be77b64f2b7..5820d750a0d 100644
--- a/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.h
+++ b/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.cc b/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.cc
index 1eeb1d963c8..9cc956eb61a 100644
--- a/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.h b/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.h
index 086fabdc900..9fa79620456 100644
--- a/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.h
+++ b/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.cc b/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.cc
index d45c5991ef4..cfa685b724e 100644
--- a/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.h b/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.h
index a094a954fbc..d5757078e51 100644
--- a/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.h
+++ b/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.cc b/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.cc
index e9832439ffc..a6f03ac797b 100644
--- a/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.h b/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.h
index 7efae8dc674..98da8de2209 100644
--- a/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.h
+++ b/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/rpc/status.nanopb.cc b/Firestore/Protos/nanopb/google/rpc/status.nanopb.cc
index b71c001f277..cf7cc2768d9 100644
--- a/Firestore/Protos/nanopb/google/rpc/status.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/rpc/status.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/rpc/status.nanopb.h b/Firestore/Protos/nanopb/google/rpc/status.nanopb.h
index cadd9ece3a0..bd59ff0a20e 100644
--- a/Firestore/Protos/nanopb/google/rpc/status.nanopb.h
+++ b/Firestore/Protos/nanopb/google/rpc/status.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/type/latlng.nanopb.cc b/Firestore/Protos/nanopb/google/type/latlng.nanopb.cc
index f6b9e6870e3..378c66500bf 100644
--- a/Firestore/Protos/nanopb/google/type/latlng.nanopb.cc
+++ b/Firestore/Protos/nanopb/google/type/latlng.nanopb.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/nanopb/google/type/latlng.nanopb.h b/Firestore/Protos/nanopb/google/type/latlng.nanopb.h
index 2daf244dd19..1e78b1896ca 100644
--- a/Firestore/Protos/nanopb/google/type/latlng.nanopb.h
+++ b/Firestore/Protos/nanopb/google/type/latlng.nanopb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Protos/protos/google/api/field_behavior.proto b/Firestore/Protos/protos/google/api/field_behavior.proto
new file mode 100644
index 00000000000..3c114c3fc8e
--- /dev/null
+++ b/Firestore/Protos/protos/google/api/field_behavior.proto
@@ -0,0 +1,104 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package google.api;
+
+import "google/protobuf/descriptor.proto";
+
+option go_package = "google.golang.org/genproto/googleapis/api/annotations;annotations";
+option java_multiple_files = true;
+option java_outer_classname = "FieldBehaviorProto";
+option java_package = "com.google.api";
+option objc_class_prefix = "GAPI";
+
+extend google.protobuf.FieldOptions {
+  // A designation of a specific field behavior (required, output only, etc.)
+  // in protobuf messages.
+  //
+  // Examples:
+  //
+  //   string name = 1 [(google.api.field_behavior) = REQUIRED];
+  //   State state = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
+  //   google.protobuf.Duration ttl = 1
+  //     [(google.api.field_behavior) = INPUT_ONLY];
+  //   google.protobuf.Timestamp expire_time = 1
+  //     [(google.api.field_behavior) = OUTPUT_ONLY,
+  //      (google.api.field_behavior) = IMMUTABLE];
+  repeated google.api.FieldBehavior field_behavior = 1052 [packed = false];
+}
+
+// An indicator of the behavior of a given field (for example, that a field
+// is required in requests, or given as output but ignored as input).
+// This **does not** change the behavior in protocol buffers itself; it only
+// denotes the behavior and may affect how API tooling handles the field.
+//
+// Note: This enum **may** receive new values in the future.
+enum FieldBehavior {
+  // Conventional default for enums. Do not use this.
+  FIELD_BEHAVIOR_UNSPECIFIED = 0;
+
+  // Specifically denotes a field as optional.
+  // While all fields in protocol buffers are optional, this may be specified
+  // for emphasis if appropriate.
+  OPTIONAL = 1;
+
+  // Denotes a field as required.
+  // This indicates that the field **must** be provided as part of the request,
+  // and failure to do so will cause an error (usually `INVALID_ARGUMENT`).
+  REQUIRED = 2;
+
+  // Denotes a field as output only.
+  // This indicates that the field is provided in responses, but including the
+  // field in a request does nothing (the server *must* ignore it and
+  // *must not* throw an error as a result of the field's presence).
+  OUTPUT_ONLY = 3;
+
+  // Denotes a field as input only.
+  // This indicates that the field is provided in requests, and the
+  // corresponding field is not included in output.
+  INPUT_ONLY = 4;
+
+  // Denotes a field as immutable.
+  // This indicates that the field may be set once in a request to create a
+  // resource, but may not be changed thereafter.
+  IMMUTABLE = 5;
+
+  // Denotes that a (repeated) field is an unordered list.
+  // This indicates that the service may provide the elements of the list
+  // in any arbitrary  order, rather than the order the user originally
+  // provided. Additionally, the list's order may or may not be stable.
+  UNORDERED_LIST = 6;
+
+  // Denotes that this field returns a non-empty default value if not set.
+  // This indicates that if the user provides the empty value in a request,
+  // a non-empty value will be returned. The user will not be aware of what
+  // non-empty value to expect.
+  NON_EMPTY_DEFAULT = 7;
+
+  // Denotes that the field in a resource (a message annotated with
+  // google.api.resource) is used in the resource name to uniquely identify the
+  // resource. For AIP-compliant APIs, this should only be applied to the
+  // `name` field on the resource.
+  //
+  // This behavior should not be applied to references to other resources within
+  // the message.
+  //
+  // The identifier field of resources often have different field behavior
+  // depending on the request it is embedded in (e.g. for Create methods name
+  // is optional and unused, while for Update methods it is required). Instead
+  // of method-specific annotations, only `IDENTIFIER` is required.
+  IDENTIFIER = 8;
+}
\ No newline at end of file
diff --git a/Firestore/Protos/protos/google/firestore/v1/document.proto b/Firestore/Protos/protos/google/firestore/v1/document.proto
index 7414c3c2c48..ec7de3d5aca 100644
--- a/Firestore/Protos/protos/google/firestore/v1/document.proto
+++ b/Firestore/Protos/protos/google/firestore/v1/document.proto
@@ -1,4 +1,4 @@
-// Copyright 2018 Google LLC.
+// Copyright 2024 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,24 +11,24 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-//
 
 syntax = "proto3";
 
 package google.firestore.v1;
 
+import "google/api/field_behavior.proto";
 import "google/protobuf/struct.proto";
 import "google/protobuf/timestamp.proto";
 import "google/type/latlng.proto";
 
-option csharp_namespace = "Google.Cloud.Firestore.V1Beta1";
-option go_package = "google.golang.org/genproto/googleapis/firestore/v1;firestore";
+option csharp_namespace = "Google.Cloud.Firestore.V1";
+option go_package = "cloud.google.com/go/firestore/apiv1/firestorepb;firestorepb";
 option java_multiple_files = true;
 option java_outer_classname = "DocumentProto";
 option java_package = "com.google.firestore.v1";
 option objc_class_prefix = "GCFS";
-option php_namespace = "Google\\Cloud\\Firestore\\V1beta1";
-
+option php_namespace = "Google\\Cloud\\Firestore\\V1";
+option ruby_package = "Google::Cloud::Firestore::V1";
 
 // A Firestore document.
 //
@@ -42,23 +42,23 @@ message Document {
   //
   // The map keys represent field names.
   //
-  // A simple field name contains only characters `a` to `z`, `A` to `Z`,
-  // `0` to `9`, or `_`, and must not start with `0` to `9`. For example,
-  // `foo_bar_17`.
-  //
   // Field names matching the regular expression `__.*__` are reserved. Reserved
-  // field names are forbidden except in certain documented contexts. The map
-  // keys, represented as UTF-8, must not exceed 1,500 bytes and cannot be
+  // field names are forbidden except in certain documented contexts. The field
+  // names, represented as UTF-8, must not exceed 1,500 bytes and cannot be
   // empty.
   //
   // Field paths may be used in other contexts to refer to structured fields
-  // defined here. For `map_value`, the field path is represented by the simple
-  // or quoted field names of the containing fields, delimited by `.`. For
-  // example, the structured field
-  // `"foo" : { map_value: { "x&y" : { string_value: "hello" }}}` would be
-  // represented by the field path `foo.x&y`.
+  // defined here. For `map_value`, the field path is represented by a
+  // dot-delimited (`.`) string of segments. Each segment is either a simple
+  // field name (defined below) or a quoted field name. For example, the
+  // structured field `"foo" : { map_value: { "x&y" : { string_value: "hello"
+  // }}}` would be represented by the field path `` foo.`x&y` ``.
+  //
+  // A simple field name contains only characters `a` to `z`, `A` to `Z`,
+  // `0` to `9`, or `_`, and must not start with `0` to `9`. For example,
+  // `foo_bar_17`.
   //
-  // Within a field path, a quoted field name starts and ends with `` ` `` and
+  // A quoted field name starts and ends with `` ` `` and
   // may contain any character. Some characters, including `` ` ``, must be
   // escaped using a `\`. For example, `` `x&y` `` represents `x&y` and
   // `` `bak\`tik` `` represents `` bak`tik ``.
@@ -123,12 +123,38 @@ message Value {
 
     // An array value.
     //
-    // Cannot directly contain another array value, though can contain an
+    // Cannot directly contain another array value, though can contain a
     // map which contains another array.
     ArrayValue array_value = 9;
 
     // A map value.
     MapValue map_value = 6;
+
+    // Value which references a field.
+    //
+    // This is considered relative (vs absolute) since it only refers to a field
+    // and not a field within a particular document.
+    //
+    // **Requires:**
+    //
+    // * Must follow [field reference][FieldReference.field_path] limitations.
+    //
+    // * Not allowed to be used when writing documents.
+    string field_reference_value = 19;
+
+    // A value that represents an unevaluated expression.
+    //
+    // **Requires:**
+    //
+    // * Not allowed to be used when writing documents.
+    Function function_value = 20;
+
+    // A value that represents an unevaluated pipeline.
+    //
+    // **Requires:**
+    //
+    // * Not allowed to be used when writing documents.
+    Pipeline pipeline_value = 21;
   }
 }
 
@@ -148,3 +174,67 @@ message MapValue {
   // not exceed 1,500 bytes and cannot be empty.
   map<string, Value> fields = 1;
 }
+
+// Represents an unevaluated scalar expression.
+//
+// For example, the expression `like(user_name, "%alice%")` is represented as:
+//
+// ```
+// name: "like"
+// args { field_reference: "user_name" }
+// args { string_value: "%alice%" }
+// ```
+message Function {
+  // Required. The name of the function to evaluate.
+  //
+  // **Requires:**
+  //
+  // * must be in snake case (lower case with underscore separator).
+  string name = 1 [(google.api.field_behavior) = REQUIRED];
+
+  // Optional. Ordered list of arguments the given function expects.
+  repeated Value args = 2 [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. Optional named arguments that certain functions may support.
+  map<string, Value> options = 3 [(google.api.field_behavior) = OPTIONAL];
+}
+
+// A Firestore query represented as an ordered list of operations / stages.
+message Pipeline {
+  // A single operation within a pipeline.
+  //
+  // A stage is made up of a unique name, and a list of arguments. The exact
+  // number of arguments & types is dependent on the stage type.
+  //
+  // To give an example, the stage `filter(state = "MD")` would be encoded as:
+  //
+  // ```
+  // name: "filter"
+  // args {
+  //   function_value {
+  //     name: "eq"
+  //     args { field_reference_value: "state" }
+  //     args { string_value: "MD" }
+  //   }
+  // }
+  // ```
+  //
+  // See public documentation for the full list.
+  message Stage {
+    // Required. The name of the stage to evaluate.
+    //
+    // **Requires:**
+    //
+    // * must be in snake case (lower case with underscore separator).
+    string name = 1 [(google.api.field_behavior) = REQUIRED];
+
+    // Optional. Ordered list of arguments the given stage expects.
+    repeated Value args = 2 [(google.api.field_behavior) = OPTIONAL];
+
+    // Optional. Optional named arguments that certain functions may support.
+    map<string, Value> options = 3 [(google.api.field_behavior) = OPTIONAL];
+  }
+
+  // Required. Ordered list of stages to evaluate.
+  repeated Stage stages = 1 [(google.api.field_behavior) = REQUIRED];
+}
\ No newline at end of file
diff --git a/Firestore/Protos/protos/google/firestore/v1/explain_stats.proto b/Firestore/Protos/protos/google/firestore/v1/explain_stats.proto
new file mode 100644
index 00000000000..285fe34066a
--- /dev/null
+++ b/Firestore/Protos/protos/google/firestore/v1/explain_stats.proto
@@ -0,0 +1,38 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package google.firestore.v1;
+
+import "google/protobuf/any.proto";
+
+option csharp_namespace = "Google.Cloud.Firestore.V1";
+option go_package = "cloud.google.com/go/firestore/apiv1/firestorepb;firestorepb";
+option java_multiple_files = true;
+option java_outer_classname = "ExplainStatsProto";
+option java_package = "com.google.firestore.v1";
+option php_namespace = "Google\\Cloud\\Firestore\\V1";
+option ruby_package = "Google::Cloud::Firestore::V1";
+
+// Specification of Firestore Explain Stats fields.
+
+// Explain stats for an RPC request, includes both the optimized plan and
+// execution stats.
+message ExplainStats {
+  // The format depends on the `output_format` options in the request.
+  //
+  // The only option today is `TEXT`, which is a `google.protobuf.StringValue`.
+  google.protobuf.Any data = 1;
+}
\ No newline at end of file
diff --git a/Firestore/Protos/protos/google/firestore/v1/firestore.proto b/Firestore/Protos/protos/google/firestore/v1/firestore.proto
index 9dafa8858c3..ebcb1249773 100644
--- a/Firestore/Protos/protos/google/firestore/v1/firestore.proto
+++ b/Firestore/Protos/protos/google/firestore/v1/firestore.proto
@@ -18,9 +18,12 @@ syntax = "proto3";
 package google.firestore.v1;
 
 import "google/api/annotations.proto";
+import "google/api/field_behavior.proto";
 import "google/firestore/v1/aggregation_result.proto";
 import "google/firestore/v1/common.proto";
 import "google/firestore/v1/document.proto";
+import "google/firestore/v1/explain_stats.proto";
+import "google/firestore/v1/pipeline.proto";
 import "google/firestore/v1/query.proto";
 import "google/firestore/v1/write.proto";
 import "google/protobuf/empty.proto";
@@ -138,6 +141,15 @@ service Firestore {
     };
   }
 
+  // Executes a pipeline query.
+  rpc ExecutePipeline(ExecutePipelineRequest)
+      returns (stream ExecutePipelineResponse) {
+    option (google.api.http) = {
+      post: "/v1/{database=projects/*/databases/*}/documents:executePipeline"
+      body: "*"
+    };
+  }
+
   // Runs an aggregation query.
   //
   // Rather than producing [Document][google.firestore.v1.Document] results like [Firestore.RunQuery][google.firestore.v1.Firestore.RunQuery],
@@ -510,6 +522,81 @@ message RunQueryResponse {
   int32 skipped_results = 4;
 }
 
+// The request for
+// [Firestore.ExecutePipeline][google.firestore.v1.Firestore.ExecutePipeline].
+message ExecutePipelineRequest {
+  // Required. Database identifier, in the form
+  // `projects/{project}/databases/{database}`.
+  string database = 1 [(google.api.field_behavior) = REQUIRED];
+
+  oneof pipeline_type {
+    // A pipelined operation.
+    StructuredPipeline structured_pipeline = 2;
+  }
+
+  // Optional consistency arguments, defaults to strong consistency.
+  oneof consistency_selector {
+    // Run the query within an already active transaction.
+    //
+    // The value here is the opaque transaction ID to execute the query in.
+    bytes transaction = 5;
+
+    // Execute the pipeline in a new transaction.
+    //
+    // The identifier of the newly created transaction will be returned in the
+    // first response on the stream. This defaults to a read-only transaction.
+    TransactionOptions new_transaction = 6;
+
+    // Execute the pipeline in a snapshot transaction at the given time.
+    //
+    // This must be a microsecond precision timestamp within the past one hour,
+    // or if Point-in-Time Recovery is enabled, can additionally be a whole
+    // minute timestamp within the past 7 days.
+    google.protobuf.Timestamp read_time = 7;
+  }
+}
+
+// The response for [Firestore.Execute][].
+message ExecutePipelineResponse {
+  // Newly created transaction identifier.
+  //
+  // This field is only specified as part of the first response from the server,
+  // alongside the `results` field when the original request specified
+  // [ExecuteRequest.new_transaction][].
+  bytes transaction = 1;
+
+  // An ordered batch of results returned executing a pipeline.
+  //
+  // The batch size is variable, and can even be zero for when only a partial
+  // progress message is returned.
+  //
+  // The fields present in the returned documents are only those that were
+  // explicitly requested in the pipeline, this include those like
+  // [`__name__`][google.firestore.v1.Document.name] &
+  // [`__update_time__`][google.firestore.v1.Document.update_time]. This is
+  // explicitly a divergence from `Firestore.RunQuery` / `Firestore.GetDocument`
+  // RPCs which always return such fields even when they are not specified in
+  // the [`mask`][google.firestore.v1.DocumentMask].
+  repeated Document results = 2;
+
+  // The time at which the document(s) were read.
+  //
+  // This may be monotonically increasing; in this case, the previous documents
+  // in the result stream are guaranteed not to have changed between their
+  // `execution_time` and this one.
+  //
+  // If the query returns no results, a response with `execution_time` and no
+  // `results` will be sent, and this represents the time at which the operation
+  // was run.
+  google.protobuf.Timestamp execution_time = 3;
+
+  // Query explain stats.
+  //
+  // Contains all metadata related to pipeline planning and execution, specific
+  // contents depend on the supplied pipeline options.
+  ExplainStats explain_stats = 4;
+}
+
 // The request for [Firestore.RunAggregationQuery][google.firestore.v1.Firestore.RunAggregationQuery].
 message RunAggregationQueryRequest {
   // Required. The parent resource name. In the format:
diff --git a/Firestore/Protos/protos/google/firestore/v1/pipeline.proto b/Firestore/Protos/protos/google/firestore/v1/pipeline.proto
new file mode 100644
index 00000000000..33508166ea7
--- /dev/null
+++ b/Firestore/Protos/protos/google/firestore/v1/pipeline.proto
@@ -0,0 +1,43 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package google.firestore.v1;
+
+import "google/api/field_behavior.proto";
+import "google/firestore/v1/document.proto";
+
+option csharp_namespace = "Google.Cloud.Firestore.V1";
+option go_package = "cloud.google.com/go/firestore/apiv1/firestorepb;firestorepb";
+option java_multiple_files = true;
+option java_outer_classname = "PipelineProto";
+option java_package = "com.google.firestore.v1";
+option objc_class_prefix = "GCFS";
+option php_namespace = "Google\\Cloud\\Firestore\\V1";
+option ruby_package = "Google::Cloud::Firestore::V1";
+
+// A Firestore query represented as an ordered list of operations / stages.
+//
+// This is considered the top-level function which plans & executes a query.
+// It is logically equivalent to `query(stages, options)`, but prevents the
+// client from having to build a function wrapper.
+message StructuredPipeline {
+  // Required. The pipeline query to execute.
+  Pipeline pipeline = 1 [(google.api.field_behavior) = REQUIRED];
+
+  // Optional. Optional query-level arguments.
+  //
+  map<string, Value> options = 2 [(google.api.field_behavior) = OPTIONAL];
+}
\ No newline at end of file
diff --git a/Firestore/Source/API/FIRFirestore+Internal.h b/Firestore/Source/API/FIRFirestore+Internal.h
index 5c5da4c525d..eecc1160a5f 100644
--- a/Firestore/Source/API/FIRFirestore+Internal.h
+++ b/Firestore/Source/API/FIRFirestore+Internal.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Google
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/Firestore/Source/API/FIRPipelineBridge+Internal.h b/Firestore/Source/API/FIRPipelineBridge+Internal.h
new file mode 100644
index 00000000000..603bc7b88ac
--- /dev/null
+++ b/Firestore/Source/API/FIRPipelineBridge+Internal.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRPipelineBridge.h"
+
+#include <memory>
+
+#include "Firestore/core/src/api/expressions.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/api/pipeline.h"
+#include "Firestore/core/src/api/stages.h"
+
+@class FIRFilter;
+
+namespace api = firebase::firestore::api;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRExprBridge (Internal)
+
+- (std::shared_ptr<api::Expr>)cppExprWithReader:(FSTUserDataReader *)reader;
+
+@end
+
+@interface FIROrderingBridge (Internal)
+
+- (std::shared_ptr<api::Ordering>)cppOrderingWithReader:(FSTUserDataReader *)reader;
+
+@end
+
+@interface FIRStageBridge (Internal)
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader;
+
+@end
+
+@interface __FIRPipelineSnapshotBridge (Internal)
+
+- (id)initWithCppSnapshot:(api::PipelineSnapshot)snapshot;
+
+@end
+
+@interface __FIRPipelineResultBridge (Internal)
+
+- (id)initWithCppResult:(api::PipelineResult)result db:(std::shared_ptr<api::Firestore>)db;
+
+@end
+
+@interface FIRPipelineBridge (Internal)
+
+- (std::shared_ptr<api::Pipeline>)cppPipelineWithReader:(FSTUserDataReader *)reader;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/Firestore/Source/API/FIRPipelineBridge.mm b/Firestore/Source/API/FIRPipelineBridge.mm
new file mode 100644
index 00000000000..4a87351c4c5
--- /dev/null
+++ b/Firestore/Source/API/FIRPipelineBridge.mm
@@ -0,0 +1,1062 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRPipelineBridge.h"
+
+#import <FirebaseCore/FIRTimestamp.h>
+
+#include <memory>
+
+#import "Firestore/Source/API/FIRCollectionReference+Internal.h"
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRFieldPath+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRPipelineBridge+Internal.h"
+#import "Firestore/Source/API/FSTUserDataReader.h"
+#import "Firestore/Source/API/FSTUserDataWriter.h"
+#import "Firestore/Source/API/converters.h"
+#import "Firestore/Source/Public/FirebaseFirestore/FIRVectorValue.h"
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+
+#include "Firestore/core/src/api/aggregate_expressions.h"
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/api/expressions.h"
+#include "Firestore/core/src/api/ordering.h"
+#include "Firestore/core/src/api/pipeline.h"
+#include "Firestore/core/src/api/pipeline_result.h"
+#include "Firestore/core/src/api/pipeline_snapshot.h"
+#include "Firestore/core/src/api/stages.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+using firebase::firestore::api::AddFields;
+using firebase::firestore::api::AggregateFunction;
+using firebase::firestore::api::AggregateStage;
+using firebase::firestore::api::CollectionGroupSource;
+using firebase::firestore::api::CollectionSource;
+using firebase::firestore::api::Constant;
+using firebase::firestore::api::DatabaseSource;
+using firebase::firestore::api::DistinctStage;
+using firebase::firestore::api::DocumentReference;
+using firebase::firestore::api::DocumentsSource;
+using firebase::firestore::api::Expr;
+using firebase::firestore::api::Field;
+using firebase::firestore::api::FindNearestStage;
+using firebase::firestore::api::FunctionExpr;
+using firebase::firestore::api::LimitStage;
+using firebase::firestore::api::MakeFIRTimestamp;
+using firebase::firestore::api::OffsetStage;
+using firebase::firestore::api::Ordering;
+using firebase::firestore::api::Pipeline;
+using firebase::firestore::api::RawStage;
+using firebase::firestore::api::RemoveFieldsStage;
+using firebase::firestore::api::ReplaceWith;
+using firebase::firestore::api::Sample;
+using firebase::firestore::api::SelectStage;
+using firebase::firestore::api::SortStage;
+using firebase::firestore::api::Union;
+using firebase::firestore::api::Unnest;
+using firebase::firestore::api::Where;
+using firebase::firestore::model::DeepClone;
+using firebase::firestore::model::FieldPath;
+using firebase::firestore::nanopb::MakeSharedMessage;
+using firebase::firestore::nanopb::SharedMessage;
+using firebase::firestore::util::ComparisonResult;
+using firebase::firestore::util::MakeCallback;
+using firebase::firestore::util::MakeNSString;
+using firebase::firestore::util::MakeString;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+NS_ASSUME_NONNULL_BEGIN
+
+inline std::string EnsureLeadingSlash(const std::string &path) {
+  if (!path.empty() && path[0] == '/') {
+    return path;
+  }
+  return "/" + path;
+}
+
+@implementation FIRExprBridge
+@end
+
+@implementation FIRFieldBridge {
+  FIRFieldPath *field_path;
+  std::shared_ptr<Field> field;
+}
+
+- (id)initWithName:(NSString *)name {
+  self = [super init];
+  if (self) {
+    field_path = [FIRFieldPath pathWithDotSeparatedString:name];
+    field = std::make_shared<Field>([field_path internalValue].CanonicalString());
+  }
+  return self;
+}
+
+- (id)initWithPath:(FIRFieldPath *)path {
+  self = [super init];
+  if (self) {
+    field_path = path;
+    field = std::make_shared<Field>([field_path internalValue].CanonicalString());
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Expr>)cppExprWithReader:(FSTUserDataReader *)reader {
+  return field;
+}
+
+- (NSString *)field_name {
+  return MakeNSString([field_path internalValue].CanonicalString());
+}
+
+@end
+
+@implementation FIRConstantBridge {
+  std::shared_ptr<Constant> cpp_constant;
+  id _input;
+  Boolean isUserDataRead;
+}
+- (id)init:(id)input {
+  self = [super init];
+  _input = input;
+  isUserDataRead = NO;
+  return self;
+}
+
+- (std::shared_ptr<api::Expr>)cppExprWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    cpp_constant = std::make_shared<Constant>([reader parsedQueryValue:_input]);
+  }
+
+  isUserDataRead = YES;
+  return cpp_constant;
+}
+
+@end
+
+@implementation FIRFunctionExprBridge {
+  std::shared_ptr<FunctionExpr> cpp_function;
+  NSString *_name;
+  NSArray<FIRExprBridge *> *_args;
+  Boolean isUserDataRead;
+}
+
+- (nonnull id)initWithName:(NSString *)name Args:(nonnull NSArray<FIRExprBridge *> *)args {
+  self = [super init];
+  _name = name;
+  _args = args;
+  isUserDataRead = NO;
+  return self;
+}
+
+- (std::shared_ptr<api::Expr>)cppExprWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::vector<std::shared_ptr<Expr>> cpp_args;
+    for (FIRExprBridge *arg in _args) {
+      cpp_args.push_back([arg cppExprWithReader:reader]);
+    }
+    cpp_function = std::make_shared<FunctionExpr>(MakeString(_name), std::move(cpp_args));
+  }
+
+  isUserDataRead = YES;
+  return cpp_function;
+}
+
+@end
+
+@implementation FIRAggregateFunctionBridge {
+  std::shared_ptr<AggregateFunction> cpp_function;
+  NSString *_name;
+  NSArray<FIRExprBridge *> *_args;
+  Boolean isUserDataRead;
+}
+
+- (nonnull id)initWithName:(NSString *)name Args:(nonnull NSArray<FIRExprBridge *> *)args {
+  _name = name;
+  _args = args;
+  isUserDataRead = NO;
+  return self;
+}
+
+- (std::shared_ptr<AggregateFunction>)cppExprWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::vector<std::shared_ptr<Expr>> cpp_args;
+    for (FIRExprBridge *arg in _args) {
+      cpp_args.push_back([arg cppExprWithReader:reader]);
+    }
+    cpp_function = std::make_shared<AggregateFunction>(MakeString(_name), std::move(cpp_args));
+  }
+
+  isUserDataRead = YES;
+  return cpp_function;
+}
+
+@end
+
+@implementation FIROrderingBridge {
+  std::shared_ptr<Ordering> cpp_ordering;
+  NSString *_direction;
+  FIRExprBridge *_expr;
+  Boolean isUserDataRead;
+}
+
+- (nonnull id)initWithExpr:(FIRExprBridge *)expr Direction:(NSString *)direction {
+  _expr = expr;
+  _direction = direction;
+  isUserDataRead = NO;
+  return self;
+}
+
+- (std::shared_ptr<Ordering>)cppOrderingWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    cpp_ordering = std::make_shared<Ordering>(
+        [_expr cppExprWithReader:reader], Ordering::DirectionFromString(MakeString(_direction)));
+  }
+
+  isUserDataRead = YES;
+  return cpp_ordering;
+}
+
+@end
+
+@implementation FIRStageBridge
+@end
+
+@implementation FIRCollectionSourceStageBridge {
+  std::shared_ptr<CollectionSource> collection_source;
+}
+
+- (id)initWithRef:(FIRCollectionReference *)ref firestore:(FIRFirestore *)db {
+  self = [super init];
+  if (self) {
+    if (ref.firestore.databaseID.CompareTo(db.databaseID) != ComparisonResult::Same) {
+      ThrowInvalidArgument(
+          "Invalid CollectionReference. The project ID (\"%s\") or the database (\"%s\") does not "
+          "match "
+          "the project ID (\"%s\") and database (\"%s\") of the target database of this Pipeline.",
+          ref.firestore.databaseID.project_id(), ref.firestore.databaseID.database_id(),
+          db.databaseID.project_id(), db.databaseID.project_id());
+    }
+    collection_source =
+        std::make_shared<CollectionSource>(EnsureLeadingSlash(MakeString(ref.path)));
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  return collection_source;
+}
+
+@end
+
+@implementation FIRDatabaseSourceStageBridge {
+  std::shared_ptr<DatabaseSource> cpp_database_source;
+}
+
+- (id)init {
+  self = [super init];
+  if (self) {
+    cpp_database_source = std::make_shared<DatabaseSource>();
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  return cpp_database_source;
+}
+
+@end
+
+@implementation FIRCollectionGroupSourceStageBridge {
+  std::shared_ptr<CollectionGroupSource> cpp_collection_group_source;
+}
+
+- (id)initWithCollectionId:(NSString *)id {
+  self = [super init];
+  if (self) {
+    cpp_collection_group_source = std::make_shared<CollectionGroupSource>(MakeString(id));
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  return cpp_collection_group_source;
+}
+
+@end
+
+@implementation FIRDocumentsSourceStageBridge {
+  std::shared_ptr<DocumentsSource> cpp_document_source;
+}
+
+- (id)initWithDocuments:(NSArray<FIRDocumentReference *> *)documents firestore:(FIRFirestore *)db {
+  self = [super init];
+  if (self) {
+    std::vector<std::string> cpp_documents;
+    for (FIRDocumentReference *doc in documents) {
+      if (doc.firestore.databaseID.CompareTo(db.databaseID) != ComparisonResult::Same) {
+        ThrowInvalidArgument("Invalid DocumentReference. The project ID (\"%s\") or the database "
+                             "(\"%s\") does not match "
+                             "the project ID (\"%s\") and database (\"%s\") of the target database "
+                             "of this Pipeline.",
+                             doc.firestore.databaseID.project_id(),
+                             doc.firestore.databaseID.database_id(), db.databaseID.project_id(),
+                             db.databaseID.project_id());
+      }
+      cpp_documents.push_back(EnsureLeadingSlash(MakeString(doc.path)));
+    }
+    cpp_document_source = std::make_shared<DocumentsSource>(std::move(cpp_documents));
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  return cpp_document_source;
+}
+
+@end
+
+@implementation FIRWhereStageBridge {
+  FIRExprBridge *_exprBridge;
+  Boolean isUserDataRead;
+  std::shared_ptr<Where> cpp_where;
+}
+
+- (id)initWithExpr:(FIRExprBridge *)expr {
+  self = [super init];
+  if (self) {
+    _exprBridge = expr;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    cpp_where = std::make_shared<Where>([_exprBridge cppExprWithReader:reader]);
+  }
+
+  isUserDataRead = YES;
+  return cpp_where;
+}
+
+@end
+
+@implementation FIRLimitStageBridge {
+  Boolean isUserDataRead;
+  std::shared_ptr<LimitStage> cpp_limit_stage;
+  int32_t limit;
+}
+
+- (id)initWithLimit:(NSInteger)value {
+  self = [super init];
+  if (self) {
+    isUserDataRead = NO;
+    limit = static_cast<int32_t>(value);
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    cpp_limit_stage = std::make_shared<LimitStage>(limit);
+  }
+
+  isUserDataRead = YES;
+  return cpp_limit_stage;
+}
+
+@end
+
+@implementation FIROffsetStageBridge {
+  Boolean isUserDataRead;
+  std::shared_ptr<OffsetStage> cpp_offset_stage;
+  int32_t offset;
+}
+
+- (id)initWithOffset:(NSInteger)value {
+  self = [super init];
+  if (self) {
+    isUserDataRead = NO;
+    offset = static_cast<int32_t>(value);
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    cpp_offset_stage = std::make_shared<OffsetStage>(offset);
+  }
+
+  isUserDataRead = YES;
+  return cpp_offset_stage;
+}
+
+@end
+
+// TBD
+
+@implementation FIRAddFieldsStageBridge {
+  NSDictionary<NSString *, FIRExprBridge *> *_fields;
+  Boolean isUserDataRead;
+  std::shared_ptr<AddFields> cpp_add_fields;
+}
+
+- (id)initWithFields:(NSDictionary<NSString *, FIRExprBridge *> *)fields {
+  self = [super init];
+  if (self) {
+    _fields = fields;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::unordered_map<std::string, std::shared_ptr<Expr>> cpp_fields;
+    for (NSString *key in _fields) {
+      cpp_fields[MakeString(key)] = [_fields[key] cppExprWithReader:reader];
+    }
+    cpp_add_fields = std::make_shared<AddFields>(std::move(cpp_fields));
+  }
+
+  isUserDataRead = YES;
+  return cpp_add_fields;
+}
+
+@end
+
+@implementation FIRRemoveFieldsStageBridge {
+  NSArray<NSString *> *_fields;
+  Boolean isUserDataRead;
+  std::shared_ptr<RemoveFieldsStage> cpp_remove_fields;
+}
+
+- (id)initWithFields:(NSArray<id> *)fields {
+  self = [super init];
+  if (self) {
+    _fields = fields;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::vector<Field> cpp_fields;
+    for (id field in _fields) {
+      cpp_fields.push_back(Field(MakeString(field)));
+    }
+    cpp_remove_fields = std::make_shared<RemoveFieldsStage>(std::move(cpp_fields));
+  }
+
+  isUserDataRead = YES;
+  return cpp_remove_fields;
+}
+
+@end
+
+@implementation FIRSelectStageBridge {
+  NSDictionary<NSString *, FIRExprBridge *> *_selections;
+  Boolean isUserDataRead;
+  std::shared_ptr<SelectStage> cpp_select;
+}
+
+- (id)initWithSelections:(NSDictionary<NSString *, FIRExprBridge *> *)selections {
+  self = [super init];
+  if (self) {
+    _selections = selections;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::unordered_map<std::string, std::shared_ptr<Expr>> cpp_selections;
+    for (NSString *key in _selections) {
+      cpp_selections[MakeString(key)] = [_selections[key] cppExprWithReader:reader];
+    }
+    cpp_select = std::make_shared<SelectStage>(std::move(cpp_selections));
+  }
+
+  isUserDataRead = YES;
+  return cpp_select;
+}
+
+@end
+
+@implementation FIRDistinctStageBridge {
+  NSDictionary<NSString *, FIRExprBridge *> *_groups;
+  Boolean isUserDataRead;
+  std::shared_ptr<DistinctStage> cpp_distinct;
+}
+
+- (id)initWithGroups:(NSDictionary<NSString *, FIRExprBridge *> *)groups {
+  self = [super init];
+  if (self) {
+    _groups = groups;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::unordered_map<std::string, std::shared_ptr<Expr>> cpp_groups;
+    for (NSString *key in _groups) {
+      cpp_groups[MakeString(key)] = [_groups[key] cppExprWithReader:reader];
+    }
+    cpp_distinct = std::make_shared<DistinctStage>(std::move(cpp_groups));
+  }
+
+  isUserDataRead = YES;
+  return cpp_distinct;
+}
+
+@end
+
+@implementation FIRAggregateStageBridge {
+  NSDictionary<NSString *, FIRAggregateFunctionBridge *> *_accumulators;
+  NSDictionary<NSString *, FIRExprBridge *> *_groups;
+  Boolean isUserDataRead;
+  std::shared_ptr<AggregateStage> cpp_aggregate;
+}
+
+- (id)initWithAccumulators:(NSDictionary<NSString *, FIRAggregateFunctionBridge *> *)accumulators
+                    groups:(NSDictionary<NSString *, FIRExprBridge *> *)groups {
+  self = [super init];
+  if (self) {
+    _accumulators = accumulators;
+    _groups = groups;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::unordered_map<std::string, std::shared_ptr<AggregateFunction>> cpp_accumulators;
+    for (NSString *key in _accumulators) {
+      cpp_accumulators[MakeString(key)] = [_accumulators[key] cppExprWithReader:reader];
+    }
+
+    std::unordered_map<std::string, std::shared_ptr<Expr>> cpp_groups;
+    for (NSString *key in _groups) {
+      cpp_groups[MakeString(key)] = [_groups[key] cppExprWithReader:reader];
+    }
+    cpp_aggregate =
+        std::make_shared<AggregateStage>(std::move(cpp_accumulators), std::move(cpp_groups));
+  }
+
+  isUserDataRead = YES;
+  return cpp_aggregate;
+}
+
+@end
+
+@implementation FIRFindNearestStageBridge {
+  FIRFieldBridge *_field;
+  FIRVectorValue *_vectorValue;
+  NSString *_distanceMeasure;
+  NSNumber *_limit;
+  FIRExprBridge *_Nullable _distanceField;
+  Boolean isUserDataRead;
+  std::shared_ptr<FindNearestStage> cpp_find_nearest;
+}
+
+- (id)initWithField:(FIRFieldBridge *)field
+        vectorValue:(FIRVectorValue *)vectorValue
+    distanceMeasure:(NSString *)distanceMeasure
+              limit:(NSNumber *_Nullable)limit
+      distanceField:(FIRExprBridge *_Nullable)distanceField {
+  self = [super init];
+  if (self) {
+    _field = field;
+    _vectorValue = vectorValue;
+    _distanceMeasure = distanceMeasure;
+    _limit = limit;
+    _distanceField = distanceField;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::unordered_map<std::string, firebase::firestore::google_firestore_v1_Value> optional_value;
+    if (_limit) {
+      optional_value.emplace(std::make_pair(
+          std::string("limit"), *DeepClone(*[reader parsedQueryValue:_limit]).release()));
+    }
+
+    if (_distanceField) {
+      std::shared_ptr<Expr> cpp_distance_field = [_distanceField cppExprWithReader:reader];
+      optional_value.emplace(
+          std::make_pair(std::string("distance_field"), cpp_distance_field->to_proto()));
+    }
+
+    FindNearestStage::DistanceMeasure::Measure measure_enum;
+    if ([_distanceMeasure isEqualToString:@"cosine"]) {
+      measure_enum = FindNearestStage::DistanceMeasure::COSINE;
+    } else if ([_distanceMeasure isEqualToString:@"dot_product"]) {
+      measure_enum = FindNearestStage::DistanceMeasure::DOT_PRODUCT;
+    } else {
+      measure_enum = FindNearestStage::DistanceMeasure::EUCLIDEAN;
+    }
+
+    cpp_find_nearest = std::make_shared<FindNearestStage>(
+        [_field cppExprWithReader:reader], [reader parsedQueryValue:_vectorValue],
+        FindNearestStage::DistanceMeasure(measure_enum), optional_value);
+  }
+
+  isUserDataRead = YES;
+  return cpp_find_nearest;
+}
+
+@end
+
+@implementation FIRSorStageBridge {
+  NSArray<FIROrderingBridge *> *_orderings;
+  Boolean isUserDataRead;
+  std::shared_ptr<SortStage> cpp_sort;
+}
+
+- (id)initWithOrderings:(NSArray<id> *)orderings {
+  self = [super init];
+  if (self) {
+    _orderings = orderings;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::vector<std::shared_ptr<Ordering>> cpp_orderings;
+    for (FIROrderingBridge *ordering in _orderings) {
+      cpp_orderings.push_back([ordering cppOrderingWithReader:reader]);
+    }
+    cpp_sort = std::make_shared<SortStage>(std::move(cpp_orderings));
+  }
+
+  isUserDataRead = YES;
+  return cpp_sort;
+}
+
+@end
+
+@implementation FIRReplaceWithStageBridge {
+  FIRExprBridge *_expr;
+  Boolean isUserDataRead;
+  std::shared_ptr<ReplaceWith> cpp_replace_with;
+}
+
+- (id)initWithExpr:(FIRExprBridge *)expr {
+  self = [super init];
+  if (self) {
+    _expr = expr;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    cpp_replace_with = std::make_shared<ReplaceWith>([_expr cppExprWithReader:reader]);
+  }
+
+  isUserDataRead = YES;
+  return cpp_replace_with;
+}
+
+@end
+
+@implementation FIRSampleStageBridge {
+  int64_t _count;
+  double _percentage;
+  Boolean isUserDataRead;
+  NSString *type;
+  std::shared_ptr<Sample> cpp_sample;
+}
+
+- (id)initWithCount:(int64_t)count {
+  self = [super init];
+  if (self) {
+    _count = count;
+    _percentage = 0;
+    type = @"count";
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (id)initWithPercentage:(double)percentage {
+  self = [super init];
+  if (self) {
+    _percentage = percentage;
+    _count = 0;
+    type = @"percentage";
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    if ([type isEqualToString:@"count"]) {
+      cpp_sample =
+          std::make_shared<Sample>(Sample::SampleMode(Sample::SampleMode::DOCUMENTS), _count, 0);
+    } else {
+      cpp_sample =
+          std::make_shared<Sample>(Sample::SampleMode(Sample::SampleMode::PERCENT), 0, _percentage);
+    }
+  }
+
+  isUserDataRead = YES;
+  return cpp_sample;
+}
+
+@end
+
+@implementation FIRUnionStageBridge {
+  FIRPipelineBridge *_other;
+  Boolean isUserDataRead;
+  std::shared_ptr<Union> cpp_union_stage;
+}
+
+- (id)initWithOther:(FIRPipelineBridge *)other {
+  self = [super init];
+  if (self) {
+    _other = other;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    cpp_union_stage = std::make_shared<Union>([_other cppPipelineWithReader:reader]);
+  }
+
+  isUserDataRead = YES;
+  return cpp_union_stage;
+}
+
+@end
+
+@implementation FIRUnnestStageBridge {
+  FIRExprBridge *_field;
+  FIRExprBridge *_Nullable _index_field;
+  FIRExprBridge *_alias;
+  Boolean isUserDataRead;
+  std::shared_ptr<Unnest> cpp_unnest;
+}
+
+- (id)initWithField:(FIRExprBridge *)field
+              alias:(FIRExprBridge *)alias
+         indexField:(FIRExprBridge *_Nullable)index_field {
+  self = [super init];
+  if (self) {
+    _field = field;
+    _alias = alias;
+    _index_field = index_field;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    absl::optional<std::shared_ptr<Expr>> cpp_index_field;
+    if (_index_field != nil) {
+      cpp_index_field = [_index_field cppExprWithReader:reader];
+    } else {
+      cpp_index_field = absl::nullopt;
+    }
+    cpp_unnest = std::make_shared<Unnest>([_field cppExprWithReader:reader],
+                                          [_alias cppExprWithReader:reader], cpp_index_field);
+  }
+
+  isUserDataRead = YES;
+  return cpp_unnest;
+}
+
+@end
+
+@implementation FIRRawStageBridge {
+  NSString *_name;
+  NSArray<id> *_params;
+  NSDictionary<NSString *, FIRExprBridge *> *_Nullable _options;
+  Boolean isUserDataRead;
+  std::shared_ptr<RawStage> cpp_generic_stage;
+}
+
+- (id)initWithName:(NSString *)name
+            params:(NSArray<id> *)params
+           options:(NSDictionary<NSString *, FIRExprBridge *> *_Nullable)options {
+  self = [super init];
+  if (self) {
+    _name = name;
+    _params = params;
+    _options = options;
+    isUserDataRead = NO;
+  }
+  return self;
+}
+
+- (firebase::firestore::google_firestore_v1_Value)convertIdToV1Value:(id)value
+                                                              reader:(FSTUserDataReader *)reader {
+  if ([value isKindOfClass:[FIRExprBridge class]]) {
+    return [((FIRExprBridge *)value) cppExprWithReader:reader]->to_proto();
+  } else if ([value isKindOfClass:[FIRAggregateFunctionBridge class]]) {
+    return [((FIRAggregateFunctionBridge *)value) cppExprWithReader:reader]->to_proto();
+  } else if ([value isKindOfClass:[NSDictionary class]]) {
+    NSDictionary<NSString *, id> *dictionary = (NSDictionary<NSString *, id> *)value;
+
+    std::unordered_map<std::string, firebase::firestore::google_firestore_v1_Value> cpp_dictionary;
+    for (NSString *key in dictionary) {
+      if ([dictionary[key] isKindOfClass:[FIRExprBridge class]]) {
+        cpp_dictionary[MakeString(key)] =
+            [((FIRExprBridge *)dictionary[key]) cppExprWithReader:reader]->to_proto();
+      } else if ([dictionary[key] isKindOfClass:[FIRAggregateFunctionBridge class]]) {
+        cpp_dictionary[MakeString(key)] =
+            [((FIRAggregateFunctionBridge *)dictionary[key]) cppExprWithReader:reader]->to_proto();
+      } else {
+        ThrowInvalidArgument(
+            "Dictionary value must be an FIRExprBridge or FIRAggregateFunctionBridge.");
+      }
+    }
+
+    firebase::firestore::google_firestore_v1_Value result;
+    result.which_value_type = google_firestore_v1_Value_map_value_tag;
+
+    nanopb::SetRepeatedField(
+        &result.map_value.fields, &result.map_value.fields_count, cpp_dictionary,
+        [](const std::pair<std::string, firebase::firestore::google_firestore_v1_Value> &entry) {
+          return firebase::firestore::_google_firestore_v1_MapValue_FieldsEntry{
+              nanopb::MakeBytesArray(entry.first), entry.second};
+        });
+    return result;
+  } else {
+    ThrowInvalidArgument("Invalid value to convert to google_firestore_v1_Value.");
+  }
+}
+
+- (std::shared_ptr<api::Stage>)cppStageWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::vector<firebase::firestore::google_firestore_v1_Value> cpp_params;
+    for (id param in _params) {
+      cpp_params.push_back([self convertIdToV1Value:param reader:reader]);
+    }
+
+    std::unordered_map<std::string, std::shared_ptr<Expr>> cpp_options;
+    if (_options) {
+      for (NSString *key in _options) {
+        cpp_options[MakeString(key)] = [_options[key] cppExprWithReader:reader];
+      }
+    }
+    cpp_generic_stage = std::make_shared<RawStage>(MakeString(_name), std::move(cpp_params),
+                                                   std::move(cpp_options));
+  }
+
+  isUserDataRead = YES;
+  return cpp_generic_stage;
+}
+
+@end
+
+@interface __FIRPipelineSnapshotBridge ()
+
+@property(nonatomic, strong, readwrite) NSArray<__FIRPipelineResultBridge *> *results;
+
+@end
+
+@implementation __FIRPipelineSnapshotBridge {
+  absl::optional<api::PipelineSnapshot> snapshot_;
+  NSMutableArray<__FIRPipelineResultBridge *> *results_;
+}
+
+- (id)initWithCppSnapshot:(api::PipelineSnapshot)snapshot {
+  self = [super init];
+  if (self) {
+    snapshot_ = std::move(snapshot);
+    if (!snapshot_.has_value()) {
+      results_ = nil;
+    } else {
+      NSMutableArray<__FIRPipelineResultBridge *> *results = [NSMutableArray array];
+      for (auto &result : snapshot_.value().results()) {
+        [results addObject:[[__FIRPipelineResultBridge alloc]
+                               initWithCppResult:result
+                                              db:snapshot_.value().firestore()]];
+      }
+      results_ = results;
+    }
+  }
+
+  return self;
+}
+
+- (NSArray<__FIRPipelineResultBridge *> *)results {
+  return results_;
+}
+
+- (FIRTimestamp *)execution_time {
+  if (!snapshot_.has_value()) {
+    return nil;
+  } else {
+    return MakeFIRTimestamp(snapshot_.value().execution_time().timestamp());
+  }
+}
+
+@end
+
+@implementation __FIRPipelineResultBridge {
+  api::PipelineResult _result;
+  std::shared_ptr<api::Firestore> _db;
+}
+
+- (nullable FIRDocumentReference *)reference {
+  if (!_result.internal_key().has_value()) return nil;
+
+  return [[FIRDocumentReference alloc] initWithKey:_result.internal_key().value() firestore:_db];
+}
+
+- (nullable NSString *)documentID {
+  if (!_result.document_id().has_value()) {
+    return nil;
+  }
+
+  return MakeNSString(_result.document_id().value());
+}
+
+- (nullable FIRTimestamp *)create_time {
+  if (!_result.create_time().has_value()) {
+    return nil;
+  }
+
+  return MakeFIRTimestamp(_result.create_time().value().timestamp());
+}
+
+- (nullable FIRTimestamp *)update_time {
+  if (!_result.update_time().has_value()) {
+    return nil;
+  }
+
+  return MakeFIRTimestamp(_result.update_time().value().timestamp());
+}
+
+- (id)initWithCppResult:(api::PipelineResult)result db:(std::shared_ptr<api::Firestore>)db {
+  self = [super init];
+  if (self) {
+    _result = std::move(result);
+    _db = std::move(db);
+  }
+
+  return self;
+}
+
+- (NSDictionary<NSString *, id> *)data {
+  return [self dataWithServerTimestampBehavior:FIRServerTimestampBehaviorNone];
+}
+
+- (NSDictionary<NSString *, id> *)dataWithServerTimestampBehavior:
+    (FIRServerTimestampBehavior)serverTimestampBehavior {
+  absl::optional<firebase::firestore::google_firestore_v1_Value> data =
+      _result.internal_value()->Get();
+  if (!data) return [NSDictionary dictionary];
+
+  FSTUserDataWriter *dataWriter =
+      [[FSTUserDataWriter alloc] initWithFirestore:_db
+                           serverTimestampBehavior:serverTimestampBehavior];
+  NSDictionary<NSString *, id> *dictionary = [dataWriter convertedValue:*data];
+  NSLog(@"Dictionary contents: %@", dictionary);
+  return dictionary;
+}
+
+- (nullable id)get:(id)field {
+  return [self get:field serverTimestampBehavior:FIRServerTimestampBehaviorNone];
+}
+
+- (nullable id)get:(id)field
+    serverTimestampBehavior:(FIRServerTimestampBehavior)serverTimestampBehavior {
+  FieldPath fieldPath;
+  if ([field isKindOfClass:[NSString class]]) {
+    fieldPath = FieldPath::FromDotSeparatedString(MakeString(field));
+  } else if ([field isKindOfClass:[FIRFieldPath class]]) {
+    fieldPath = ((FIRFieldPath *)field).internalValue;
+  } else {
+    ThrowInvalidArgument("Subscript key must be an NSString or FIRFieldPath.");
+  }
+  absl::optional<firebase::firestore::google_firestore_v1_Value> fieldValue =
+      _result.internal_value()->Get(fieldPath);
+  if (!fieldValue) return nil;
+  FSTUserDataWriter *dataWriter =
+      [[FSTUserDataWriter alloc] initWithFirestore:_db
+                           serverTimestampBehavior:serverTimestampBehavior];
+  return [dataWriter convertedValue:*fieldValue];
+}
+
+@end
+
+@implementation FIRPipelineBridge {
+  NSArray<FIRStageBridge *> *_stages;
+  FIRFirestore *firestore;
+  Boolean isUserDataRead;
+  std::shared_ptr<Pipeline> cpp_pipeline;
+}
+
+- (id)initWithStages:(NSArray<FIRStageBridge *> *)stages db:(FIRFirestore *)db {
+  _stages = stages;
+  firestore = db;
+  isUserDataRead = NO;
+  return [super init];
+}
+
+- (void)executeWithCompletion:(void (^)(__FIRPipelineSnapshotBridge *_Nullable result,
+                                        NSError *_Nullable error))completion {
+  [self cppPipelineWithReader:firestore.dataReader]->execute(
+      [completion](StatusOr<api::PipelineSnapshot> maybe_value) {
+        if (maybe_value.ok()) {
+          __FIRPipelineSnapshotBridge *bridge = [[__FIRPipelineSnapshotBridge alloc]
+              initWithCppSnapshot:std::move(maybe_value).ValueOrDie()];
+          completion(bridge, nil);
+        } else {
+          completion(nil, MakeNSError(std::move(maybe_value).status()));
+        }
+      });
+}
+
+- (std::shared_ptr<api::Pipeline>)cppPipelineWithReader:(FSTUserDataReader *)reader {
+  if (!isUserDataRead) {
+    std::vector<std::shared_ptr<firebase::firestore::api::Stage>> cpp_stages;
+    for (FIRStageBridge *stage in _stages) {
+      cpp_stages.push_back([stage cppStageWithReader:firestore.dataReader]);
+    }
+    cpp_pipeline = std::make_shared<Pipeline>(cpp_stages, firestore.wrapped);
+  }
+
+  isUserDataRead = YES;
+  return cpp_pipeline;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/Firestore/Source/Public/FirebaseFirestore/FIRPipelineBridge.h b/Firestore/Source/Public/FirebaseFirestore/FIRPipelineBridge.h
new file mode 100644
index 00000000000..e148637d48a
--- /dev/null
+++ b/Firestore/Source/Public/FirebaseFirestore/FIRPipelineBridge.h
@@ -0,0 +1,253 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFirestore.h"
+
+#import <Foundation/Foundation.h>
+
+#import "FIRDocumentSnapshot.h"
+
+@class FIRTimestamp;
+@class FIRVectorValue;
+@class FIRPipelineBridge;
+@class FIRFieldPath;
+
+NS_ASSUME_NONNULL_BEGIN
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(ExprBridge)
+@interface FIRExprBridge : NSObject
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(FieldBridge)
+@interface FIRFieldBridge : FIRExprBridge
+- (id)initWithName:(NSString *)name;
+- (id)initWithPath:(FIRFieldPath *)path;
+- (NSString *)field_name;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(ConstantBridge)
+@interface FIRConstantBridge : FIRExprBridge
+- (id)init:(id)input;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(FunctionExprBridge)
+@interface FIRFunctionExprBridge : FIRExprBridge
+- (id)initWithName:(NSString *)name Args:(NSArray<FIRExprBridge *> *)args;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(AggregateFunctionBridge)
+@interface FIRAggregateFunctionBridge : NSObject
+- (id)initWithName:(NSString *)name Args:(NSArray<FIRExprBridge *> *)args;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(OrderingBridge)
+@interface FIROrderingBridge : NSObject
+- (id)initWithExpr:(FIRExprBridge *)expr Direction:(NSString *)direction;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(StageBridge)
+@interface FIRStageBridge : NSObject
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(CollectionSourceStageBridge)
+@interface FIRCollectionSourceStageBridge : FIRStageBridge
+
+- (id)initWithRef:(FIRCollectionReference *)ref firestore:(FIRFirestore *)db;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(DatabaseSourceStageBridge)
+@interface FIRDatabaseSourceStageBridge : FIRStageBridge
+
+- (id)init;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(CollectionGroupSourceStageBridge)
+@interface FIRCollectionGroupSourceStageBridge : FIRStageBridge
+
+- (id)initWithCollectionId:(NSString *)id;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(DocumentsSourceStageBridge)
+@interface FIRDocumentsSourceStageBridge : FIRStageBridge
+
+- (id)initWithDocuments:(NSArray<FIRDocumentReference *> *)documents firestore:(FIRFirestore *)db;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(WhereStageBridge)
+@interface FIRWhereStageBridge : FIRStageBridge
+
+- (id)initWithExpr:(FIRExprBridge *)expr;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(LimitStageBridge)
+@interface FIRLimitStageBridge : FIRStageBridge
+
+- (id)initWithLimit:(NSInteger)value;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(OffsetStageBridge)
+@interface FIROffsetStageBridge : FIRStageBridge
+
+- (id)initWithOffset:(NSInteger)value;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(AddFieldsStageBridge)
+@interface FIRAddFieldsStageBridge : FIRStageBridge
+- (id)initWithFields:(NSDictionary<NSString *, FIRExprBridge *> *)fields;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(RemoveFieldsStageBridge)
+@interface FIRRemoveFieldsStageBridge : FIRStageBridge
+- (id)initWithFields:(NSArray<NSString *> *)fields;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(SelectStageBridge)
+@interface FIRSelectStageBridge : FIRStageBridge
+- (id)initWithSelections:(NSDictionary<NSString *, FIRExprBridge *> *)selections;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(DistinctStageBridge)
+@interface FIRDistinctStageBridge : FIRStageBridge
+- (id)initWithGroups:(NSDictionary<NSString *, FIRExprBridge *> *)groups;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(AggregateStageBridge)
+@interface FIRAggregateStageBridge : FIRStageBridge
+- (id)initWithAccumulators:(NSDictionary<NSString *, FIRAggregateFunctionBridge *> *)accumulators
+                    groups:(NSDictionary<NSString *, FIRExprBridge *> *)groups;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(FindNearestStageBridge)
+@interface FIRFindNearestStageBridge : FIRStageBridge
+- (id)initWithField:(FIRFieldBridge *)field
+        vectorValue:(FIRVectorValue *)vectorValue
+    distanceMeasure:(NSString *)distanceMeasure
+              limit:(NSNumber *_Nullable)limit
+      distanceField:(FIRExprBridge *_Nullable)distanceField;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(SortStageBridge)
+@interface FIRSorStageBridge : FIRStageBridge
+- (id)initWithOrderings:(NSArray<id> *)orderings;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(ReplaceWithStageBridge)
+@interface FIRReplaceWithStageBridge : FIRStageBridge
+- (id)initWithExpr:(FIRExprBridge *)expr;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(SampleStageBridge)
+@interface FIRSampleStageBridge : FIRStageBridge
+- (id)initWithCount:(int64_t)count;
+- (id)initWithPercentage:(double)percentage;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(UnionStageBridge)
+@interface FIRUnionStageBridge : FIRStageBridge
+- (id)initWithOther:(FIRPipelineBridge *)other;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(UnnestStageBridge)
+@interface FIRUnnestStageBridge : FIRStageBridge
+- (id)initWithField:(FIRExprBridge *)field
+              alias:(FIRExprBridge *)alias
+         indexField:(FIRExprBridge *_Nullable)index_field;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(RawStageBridge)
+@interface FIRRawStageBridge : FIRStageBridge
+- (id)initWithName:(NSString *)name
+            params:(NSArray<id> *)params
+           options:(NSDictionary<NSString *, FIRExprBridge *> *_Nullable)options;
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(__PipelineResultBridge)
+@interface __FIRPipelineResultBridge : NSObject
+
+@property(nonatomic, strong, readonly, nullable) FIRDocumentReference *reference;
+
+@property(nonatomic, copy, readonly, nullable) NSString *documentID;
+
+@property(nonatomic, strong, readonly, nullable) FIRTimestamp *create_time;
+
+@property(nonatomic, strong, readonly, nullable) FIRTimestamp *update_time;
+
+- (NSDictionary<NSString *, id> *)data;
+
+- (NSDictionary<NSString *, id> *)dataWithServerTimestampBehavior:
+    (FIRServerTimestampBehavior)serverTimestampBehavior;
+
+- (nullable id)get:(id)field;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(__PipelineSnapshotBridge)
+@interface __FIRPipelineSnapshotBridge : NSObject
+
+@property(nonatomic, strong, readonly) NSArray<__FIRPipelineResultBridge *> *results;
+
+@property(nonatomic, strong, readonly) FIRTimestamp *execution_time;
+
+@end
+
+NS_SWIFT_SENDABLE
+NS_SWIFT_NAME(PipelineBridge)
+@interface FIRPipelineBridge : NSObject
+
+/** :nodoc: */
+- (id)initWithStages:(NSArray<FIRStageBridge *> *)stages db:(FIRFirestore *)db;
+
+- (void)executeWithCompletion:(void (^)(__FIRPipelineSnapshotBridge *_Nullable result,
+                                        NSError *_Nullable error))completion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/Firestore/Source/Public/FirebaseFirestore/FirebaseFirestore.h b/Firestore/Source/Public/FirebaseFirestore/FirebaseFirestore.h
index 7fabad323c8..0f10968565a 100644
--- a/Firestore/Source/Public/FirebaseFirestore/FirebaseFirestore.h
+++ b/Firestore/Source/Public/FirebaseFirestore/FirebaseFirestore.h
@@ -32,6 +32,7 @@
 #import "FIRListenerRegistration.h"
 #import "FIRLoadBundleTask.h"
 #import "FIRLocalCacheSettings.h"
+#import "FIRPipelineBridge.h"
 #import "FIRQuery.h"
 #import "FIRQuerySnapshot.h"
 #import "FIRSnapshotListenOptions.h"
diff --git a/Firestore/Swift/Source/ExprImpl.swift b/Firestore/Swift/Source/ExprImpl.swift
new file mode 100644
index 00000000000..51a82966b86
--- /dev/null
+++ b/Firestore/Swift/Source/ExprImpl.swift
@@ -0,0 +1,598 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+extension Expr {
+  func toBridge() -> ExprBridge {
+    return (self as! BridgeWrapper).bridge
+  }
+}
+
+public extension Expr {
+  func `as`(_ name: String) -> ExprWithAlias {
+    return ExprWithAlias(self, name)
+  }
+
+  // MARK: Arithmetic Operators
+
+  func add(_ value: Expr) -> FunctionExpr {
+    return FunctionExpr("add", [self, value])
+  }
+
+  func add(_ value: Sendable) -> FunctionExpr {
+    return FunctionExpr("add", [self, Helper.sendableToExpr(value)])
+  }
+
+  func subtract(_ other: Expr) -> FunctionExpr {
+    return FunctionExpr("subtract", [self, other])
+  }
+
+  func subtract(_ other: Sendable) -> FunctionExpr {
+    return FunctionExpr("subtract", [self, Helper.sendableToExpr(other)])
+  }
+
+  func multiply(_ value: Expr) -> FunctionExpr {
+    return FunctionExpr("multiply", [self, value])
+  }
+
+  func multiply(_ value: Sendable) -> FunctionExpr {
+    return FunctionExpr("multiply", [self, Helper.sendableToExpr(value)])
+  }
+
+  func divide(_ other: Expr) -> FunctionExpr {
+    return FunctionExpr("divide", [self, other])
+  }
+
+  func divide(_ other: Sendable) -> FunctionExpr {
+    return FunctionExpr("divide", [self, Helper.sendableToExpr(other)])
+  }
+
+  func mod(_ other: Expr) -> FunctionExpr {
+    return FunctionExpr("mod", [self, other])
+  }
+
+  func mod(_ other: Sendable) -> FunctionExpr {
+    return FunctionExpr("mod", [self, Helper.sendableToExpr(other)])
+  }
+
+  // MARK: Array Operations
+
+  func arrayConcat(_ secondArray: Expr, _ otherArrays: Expr...) -> FunctionExpr {
+    return FunctionExpr("array_concat", [self, secondArray] + otherArrays)
+  }
+
+  func arrayConcat(_ secondArray: [Sendable], _ otherArrays: [Sendable]...) -> FunctionExpr {
+    let exprs = [self] + [Helper.sendableToExpr(secondArray)] + otherArrays
+      .map { Helper.sendableToExpr($0) }
+    return FunctionExpr("array_concat", exprs)
+  }
+
+  func arrayContains(_ element: Expr) -> BooleanExpr {
+    return BooleanExpr("array_contains", [self, element])
+  }
+
+  func arrayContains(_ element: Sendable) -> BooleanExpr {
+    return BooleanExpr("array_contains", [self, Helper.sendableToExpr(element)])
+  }
+
+  func arrayContainsAll(_ values: [Expr]) -> BooleanExpr {
+    return BooleanExpr("array_contains_all", [self, Helper.array(values)])
+  }
+
+  func arrayContainsAll(_ values: [Sendable]) -> BooleanExpr {
+    return BooleanExpr("array_contains_all", [self, Helper.array(values)])
+  }
+
+  func arrayContainsAny(_ values: [Expr]) -> BooleanExpr {
+    return BooleanExpr("array_contains_any", [self, Helper.array(values)])
+  }
+
+  func arrayContainsAny(_ values: [Sendable]) -> BooleanExpr {
+    return BooleanExpr("array_contains_any", [self, Helper.array(values)])
+  }
+
+  func arrayLength() -> FunctionExpr {
+    return FunctionExpr("array_length", [self])
+  }
+
+  func arrayGet(_ offset: Int) -> FunctionExpr {
+    return FunctionExpr("array_get", [self, Helper.sendableToExpr(offset)])
+  }
+
+  func arrayGet(_ offsetExpr: Expr) -> FunctionExpr {
+    return FunctionExpr("array_get", [self, offsetExpr])
+  }
+
+  func gt(_ other: Expr) -> BooleanExpr {
+    return BooleanExpr("gt", [self, other])
+  }
+
+  func gt(_ other: Sendable) -> BooleanExpr {
+    let exprOther = Helper.sendableToExpr(other)
+    return BooleanExpr("gt", [self, exprOther])
+  }
+
+  // MARK: - Greater Than or Equal (gte)
+
+  func gte(_ other: Expr) -> BooleanExpr {
+    return BooleanExpr("gte", [self, other])
+  }
+
+  func gte(_ other: Sendable) -> BooleanExpr {
+    let exprOther = Helper.sendableToExpr(other)
+    return BooleanExpr("gte", [self, exprOther])
+  }
+
+  // MARK: - Less Than (lt)
+
+  func lt(_ other: Expr) -> BooleanExpr {
+    return BooleanExpr("lt", [self, other])
+  }
+
+  func lt(_ other: Sendable) -> BooleanExpr {
+    let exprOther = Helper.sendableToExpr(other)
+    return BooleanExpr("lt", [self, exprOther])
+  }
+
+  // MARK: - Less Than or Equal (lte)
+
+  func lte(_ other: Expr) -> BooleanExpr {
+    return BooleanExpr("lte", [self, other])
+  }
+
+  func lte(_ other: Sendable) -> BooleanExpr {
+    let exprOther = Helper.sendableToExpr(other)
+    return BooleanExpr("lte", [self, exprOther])
+  }
+
+  // MARK: - Equal (eq)
+
+  func eq(_ other: Expr) -> BooleanExpr {
+    return BooleanExpr("eq", [self, other])
+  }
+
+  func eq(_ other: Sendable) -> BooleanExpr {
+    let exprOther = Helper.sendableToExpr(other)
+    return BooleanExpr("eq", [self, exprOther])
+  }
+
+  func neq(_ other: Expr) -> BooleanExpr {
+    return BooleanExpr("neq", [self, other])
+  }
+
+  func neq(_ other: Sendable) -> BooleanExpr {
+    return BooleanExpr("neq", [self, Helper.sendableToExpr(other)])
+  }
+
+  func eqAny(_ others: [Expr]) -> BooleanExpr {
+    return BooleanExpr("eq_any", [self, Helper.array(others)])
+  }
+
+  func eqAny(_ others: [Sendable]) -> BooleanExpr {
+    return BooleanExpr("eq_any", [self, Helper.array(others)])
+  }
+
+  func notEqAny(_ others: [Expr]) -> BooleanExpr {
+    return BooleanExpr("not_eq_any", [self, Helper.array(others)])
+  }
+
+  func notEqAny(_ others: [Sendable]) -> BooleanExpr {
+    return BooleanExpr("not_eq_any", [self, Helper.array(others)])
+  }
+
+  // MARK: Checks
+
+  // --- Added Type Check Operations ---
+
+  func isNan() -> BooleanExpr {
+    return BooleanExpr("is_nan", [self])
+  }
+
+  func isNull() -> BooleanExpr {
+    return BooleanExpr("is_null", [self])
+  }
+
+  func exists() -> BooleanExpr {
+    return BooleanExpr("exists", [self])
+  }
+
+  func isError() -> BooleanExpr {
+    return BooleanExpr("is_error", [self])
+  }
+
+  func isAbsent() -> BooleanExpr {
+    return BooleanExpr("is_absent", [self])
+  }
+
+  func isNotNull() -> BooleanExpr {
+    return BooleanExpr("is_not_null", [self])
+  }
+
+  func isNotNan() -> BooleanExpr {
+    return BooleanExpr("is_not_nan", [self])
+  }
+
+  // --- Added String Operations ---
+
+  func charLength() -> FunctionExpr {
+    return FunctionExpr("char_length", [self])
+  }
+
+  func like(_ pattern: String) -> BooleanExpr {
+    return BooleanExpr("like", [self, Helper.sendableToExpr(pattern)])
+  }
+
+  func like(_ pattern: Expr) -> BooleanExpr {
+    return BooleanExpr("like", [self, pattern])
+  }
+
+  func regexContains(_ pattern: String) -> BooleanExpr {
+    return BooleanExpr("regex_contains", [self, Helper.sendableToExpr(pattern)])
+  }
+
+  func regexContains(_ pattern: Expr) -> BooleanExpr {
+    return BooleanExpr("regex_contains", [self, pattern])
+  }
+
+  func regexMatch(_ pattern: String) -> BooleanExpr {
+    return BooleanExpr("regex_match", [self, Helper.sendableToExpr(pattern)])
+  }
+
+  func regexMatch(_ pattern: Expr) -> BooleanExpr {
+    return BooleanExpr("regex_match", [self, pattern])
+  }
+
+  func strContains(_ substring: String) -> BooleanExpr {
+    return BooleanExpr("str_contains", [self, Helper.sendableToExpr(substring)])
+  }
+
+  func strContains(_ expr: Expr) -> BooleanExpr {
+    return BooleanExpr("str_contains", [self, expr])
+  }
+
+  func startsWith(_ prefix: String) -> BooleanExpr {
+    return BooleanExpr("starts_with", [self, Helper.sendableToExpr(prefix)])
+  }
+
+  func startsWith(_ prefix: Expr) -> BooleanExpr {
+    return BooleanExpr("starts_with", [self, prefix])
+  }
+
+  func endsWith(_ suffix: String) -> BooleanExpr {
+    return BooleanExpr("ends_with", [self, Helper.sendableToExpr(suffix)])
+  }
+
+  func endsWith(_ suffix: Expr) -> BooleanExpr {
+    return BooleanExpr("ends_with", [self, suffix])
+  }
+
+  func lowercased() -> FunctionExpr {
+    return FunctionExpr("to_lower", [self])
+  }
+
+  func uppercased() -> FunctionExpr {
+    return FunctionExpr("to_upper", [self])
+  }
+
+  func trim() -> FunctionExpr {
+    return FunctionExpr("trim", [self])
+  }
+
+  func strConcat(_ secondString: Expr, _ otherStrings: Expr...) -> FunctionExpr {
+    return FunctionExpr("str_concat", [self, secondString] + otherStrings)
+  }
+
+  func strConcat(_ secondString: String, _ otherStrings: String...) -> FunctionExpr {
+    let exprs = [self] + [Helper.sendableToExpr(secondString)] + otherStrings
+      .map { Helper.sendableToExpr($0) }
+    return FunctionExpr("str_concat", exprs)
+  }
+
+  func reverse() -> FunctionExpr {
+    return FunctionExpr("reverse", [self])
+  }
+
+  func replaceFirst(_ find: String, _ replace: String) -> FunctionExpr {
+    return FunctionExpr(
+      "replace_first",
+      [self, Helper.sendableToExpr(find), Helper.sendableToExpr(replace)]
+    )
+  }
+
+  func replaceFirst(_ find: Expr, _ replace: Expr) -> FunctionExpr {
+    return FunctionExpr("replace_first", [self, find, replace])
+  }
+
+  func replaceAll(_ find: String, _ replace: String) -> FunctionExpr {
+    return FunctionExpr(
+      "replace_all",
+      [self, Helper.sendableToExpr(find), Helper.sendableToExpr(replace)]
+    )
+  }
+
+  func replaceAll(_ find: Expr, _ replace: Expr) -> FunctionExpr {
+    return FunctionExpr("replace_all", [self, find, replace])
+  }
+
+  func byteLength() -> FunctionExpr {
+    return FunctionExpr("byte_length", [self])
+  }
+
+  func substr(_ position: Int, _ length: Int? = nil) -> FunctionExpr {
+    let positionExpr = Helper.sendableToExpr(position)
+    if let length = length {
+      return FunctionExpr("substr", [self, positionExpr, Helper.sendableToExpr(length)])
+    } else {
+      return FunctionExpr("substr", [self, positionExpr])
+    }
+  }
+
+  func substr(_ position: Expr, _ length: Expr? = nil) -> FunctionExpr {
+    if let length = length {
+      return FunctionExpr("substr", [self, position, length])
+    } else {
+      return FunctionExpr("substr", [self, position])
+    }
+  }
+
+  // --- Added Map Operations ---
+
+  func mapGet(_ subfield: String) -> FunctionExpr {
+    return FunctionExpr("map_get", [self, Constant(subfield)])
+  }
+
+  func mapRemove(_ key: String) -> FunctionExpr {
+    return FunctionExpr("map_remove", [self, Helper.sendableToExpr(key)])
+  }
+
+  func mapRemove(_ keyExpr: Expr) -> FunctionExpr {
+    return FunctionExpr("map_remove", [self, keyExpr])
+  }
+
+  func mapMerge(_ secondMap: [String: Sendable],
+                _ otherMaps: [String: Sendable]...) -> FunctionExpr {
+    let secondMapExpr = Helper.sendableToExpr(secondMap)
+    let otherMapExprs = otherMaps.map { Helper.sendableToExpr($0) }
+    return FunctionExpr("map_merge", [self, secondMapExpr] + otherMapExprs)
+  }
+
+  func mapMerge(_ secondMap: Expr, _ otherMaps: Expr...) -> FunctionExpr {
+    return FunctionExpr("map_merge", [self, secondMap] + otherMaps)
+  }
+
+  // --- Added Aggregate Operations (on Expr) ---
+
+  func count() -> AggregateFunction {
+    return AggregateFunction("count", [self])
+  }
+
+  func sum() -> AggregateFunction {
+    return AggregateFunction("sum", [self])
+  }
+
+  func avg() -> AggregateFunction {
+    return AggregateFunction("avg", [self])
+  }
+
+  func minimum() -> AggregateFunction {
+    return AggregateFunction("minimum", [self])
+  }
+
+  func maximum() -> AggregateFunction {
+    return AggregateFunction("maximum", [self])
+  }
+
+  // MARK: Logical min/max
+
+  func logicalMaximum(_ second: Expr, _ others: Expr...) -> FunctionExpr {
+    return FunctionExpr("logical_maximum", [self, second] + others)
+  }
+
+  func logicalMaximum(_ second: Sendable, _ others: Sendable...) -> FunctionExpr {
+    let exprs = [self] + [Helper.sendableToExpr(second)] + others
+      .map { Helper.sendableToExpr($0) }
+    return FunctionExpr("logical_maximum", exprs)
+  }
+
+  func logicalMinimum(_ second: Expr, _ others: Expr...) -> FunctionExpr {
+    return FunctionExpr("logical_minimum", [self, second] + others)
+  }
+
+  func logicalMinimum(_ second: Sendable, _ others: Sendable...) -> FunctionExpr {
+    let exprs = [self] + [Helper.sendableToExpr(second)] + others
+      .map { Helper.sendableToExpr($0) }
+    return FunctionExpr("logical_minimum", exprs)
+  }
+
+  // MARK: Vector Operations
+
+  func vectorLength() -> FunctionExpr {
+    return FunctionExpr("vector_length", [self])
+  }
+
+  func cosineDistance(_ other: Expr) -> FunctionExpr {
+    return FunctionExpr("cosine_distance", [self, other])
+  }
+
+  func cosineDistance(_ other: VectorValue) -> FunctionExpr {
+    return FunctionExpr("cosine_distance", [self, Helper.sendableToExpr(other)])
+  }
+
+  func cosineDistance(_ other: [Double]) -> FunctionExpr {
+    return FunctionExpr("cosine_distance", [self, Helper.sendableToExpr(other)])
+  }
+
+  func dotProduct(_ other: Expr) -> FunctionExpr {
+    return FunctionExpr("dot_product", [self, other])
+  }
+
+  func dotProduct(_ other: VectorValue) -> FunctionExpr {
+    return FunctionExpr("dot_product", [self, Helper.sendableToExpr(other)])
+  }
+
+  func dotProduct(_ other: [Double]) -> FunctionExpr {
+    return FunctionExpr("dot_product", [self, Helper.sendableToExpr(other)])
+  }
+
+  func euclideanDistance(_ other: Expr) -> FunctionExpr {
+    return FunctionExpr("euclidean_distance", [self, other])
+  }
+
+  func euclideanDistance(_ other: VectorValue) -> FunctionExpr {
+    return FunctionExpr("euclidean_distance", [self, Helper.sendableToExpr(other)])
+  }
+
+  func euclideanDistance(_ other: [Double]) -> FunctionExpr {
+    return FunctionExpr("euclidean_distance", [self, Helper.sendableToExpr(other)])
+  }
+
+  func manhattanDistance(_ other: Expr) -> FunctionExpr {
+    return FunctionExpr("manhattan_distance", [self, other])
+  }
+
+  func manhattanDistance(_ other: VectorValue) -> FunctionExpr {
+    return FunctionExpr("manhattan_distance", [self, Helper.sendableToExpr(other)])
+  }
+
+  func manhattanDistance(_ other: [Double]) -> FunctionExpr {
+    return FunctionExpr("manhattan_distance", [self, Helper.sendableToExpr(other)])
+  }
+
+  // MARK: Timestamp operations
+
+  func unixMicrosToTimestamp() -> FunctionExpr {
+    return FunctionExpr("unix_micros_to_timestamp", [self])
+  }
+
+  func timestampToUnixMicros() -> FunctionExpr {
+    return FunctionExpr("timestamp_to_unix_micros", [self])
+  }
+
+  func unixMillisToTimestamp() -> FunctionExpr {
+    return FunctionExpr("unix_millis_to_timestamp", [self])
+  }
+
+  func timestampToUnixMillis() -> FunctionExpr {
+    return FunctionExpr("timestamp_to_unix_millis", [self])
+  }
+
+  func unixSecondsToTimestamp() -> FunctionExpr {
+    return FunctionExpr("unix_seconds_to_timestamp", [self])
+  }
+
+  func timestampToUnixSeconds() -> FunctionExpr {
+    return FunctionExpr("timestamp_to_unix_seconds", [self])
+  }
+
+  func timestampAdd(_ unit: Expr, _ amount: Expr) -> FunctionExpr {
+    return FunctionExpr("timestamp_add", [self, unit, amount])
+  }
+
+  func timestampAdd(_ unit: TimeUnit, _ amount: Int) -> FunctionExpr {
+    return FunctionExpr(
+      "timestamp_add",
+      [self, Helper.sendableToExpr(unit), Helper.sendableToExpr(amount)]
+    )
+  }
+
+  func timestampSub(_ unit: Expr, _ amount: Expr) -> FunctionExpr {
+    return FunctionExpr("timestamp_sub", [self, unit, amount])
+  }
+
+  func timestampSub(_ unit: TimeUnit, _ amount: Int) -> FunctionExpr {
+    return FunctionExpr(
+      "timestamp_sub",
+      [self, Helper.sendableToExpr(unit), Helper.sendableToExpr(amount)]
+    )
+  }
+
+  // MARK: - Bitwise operations
+
+  func bitAnd(_ otherBits: Int) -> FunctionExpr {
+    return FunctionExpr("bit_and", [self, Helper.sendableToExpr(otherBits)])
+  }
+
+  func bitAnd(_ otherBits: UInt8) -> FunctionExpr {
+    return FunctionExpr("bit_and", [self, Helper.sendableToExpr(otherBits)])
+  }
+
+  func bitAnd(_ bitsExpression: Expr) -> FunctionExpr {
+    return FunctionExpr("bit_and", [self, bitsExpression])
+  }
+
+  func bitOr(_ otherBits: Int) -> FunctionExpr {
+    return FunctionExpr("bit_or", [self, Helper.sendableToExpr(otherBits)])
+  }
+
+  func bitOr(_ otherBits: UInt8) -> FunctionExpr {
+    return FunctionExpr("bit_or", [self, Helper.sendableToExpr(otherBits)])
+  }
+
+  func bitOr(_ bitsExpression: Expr) -> FunctionExpr {
+    return FunctionExpr("bit_or", [self, bitsExpression])
+  }
+
+  func bitXor(_ otherBits: Int) -> FunctionExpr {
+    return FunctionExpr("bit_xor", [self, Helper.sendableToExpr(otherBits)])
+  }
+
+  func bitXor(_ otherBits: UInt8) -> FunctionExpr {
+    return FunctionExpr("bit_xor", [self, Helper.sendableToExpr(otherBits)])
+  }
+
+  func bitXor(_ bitsExpression: Expr) -> FunctionExpr {
+    return FunctionExpr("bit_xor", [self, bitsExpression])
+  }
+
+  func bitNot() -> FunctionExpr {
+    return FunctionExpr("bit_not", [self])
+  }
+
+  func bitLeftShift(_ y: Int) -> FunctionExpr {
+    return FunctionExpr("bit_left_shift", [self, Helper.sendableToExpr(y)])
+  }
+
+  func bitLeftShift(_ numberExpr: Expr) -> FunctionExpr {
+    return FunctionExpr("bit_left_shift", [self, numberExpr])
+  }
+
+  func bitRightShift(_ y: Int) -> FunctionExpr {
+    return FunctionExpr("bit_right_shift", [self, Helper.sendableToExpr(y)])
+  }
+
+  func bitRightShift(_ numberExpr: Expr) -> FunctionExpr {
+    return FunctionExpr("bit_right_shift", [self, numberExpr])
+  }
+
+  func documentId() -> FunctionExpr {
+    return FunctionExpr("document_id", [self])
+  }
+
+  func ifError(_ catchExpr: Expr) -> FunctionExpr {
+    return FunctionExpr("if_error", [self, catchExpr])
+  }
+
+  func ifError(_ catchValue: Sendable) -> FunctionExpr {
+    return FunctionExpr("if_error", [self, Helper.sendableToExpr(catchValue)])
+  }
+
+  // MARK: Sorting
+
+  func ascending() -> Ordering {
+    return Ordering(expr: self, direction: .ascending)
+  }
+
+  func descending() -> Ordering {
+    return Ordering(expr: self, direction: .descending)
+  }
+}
diff --git a/Firestore/Swift/Source/Helper/PipelineHelper.swift b/Firestore/Swift/Source/Helper/PipelineHelper.swift
new file mode 100644
index 00000000000..0d0e6b55d59
--- /dev/null
+++ b/Firestore/Swift/Source/Helper/PipelineHelper.swift
@@ -0,0 +1,92 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+enum Helper {
+  static func sendableToExpr(_ value: Sendable?) -> Expr {
+    guard let value = value else {
+      return Constant.nil
+    }
+
+    if let exprValue = value as? Expr {
+      return exprValue
+    } else if let dictionaryValue = value as? [String: Sendable?] {
+      return map(dictionaryValue)
+    } else if let arrayValue = value as? [Sendable?] {
+      return array(arrayValue)
+    } else if let timeUnitValue = value as? TimeUnit {
+      return Constant(timeUnitValue.rawValue)
+    } else {
+      return Constant(value)
+    }
+  }
+
+  static func selectablesToMap(selectables: [Selectable]) -> [String: Expr] {
+    let exprMap = selectables.reduce(into: [String: Expr]()) { result, selectable in
+      guard let value = selectable as? SelectableWrapper else {
+        fatalError("Selectable class must conform to SelectableWrapper.")
+      }
+      result[value.alias] = value.expr
+    }
+    return exprMap
+  }
+
+  static func map(_ elements: [String: Sendable?]) -> FunctionExpr {
+    var result: [Expr] = []
+    for (key, value) in elements {
+      result.append(Constant(key))
+      result.append(sendableToExpr(value))
+    }
+    return FunctionExpr("map", result)
+  }
+
+  static func array(_ elements: [Sendable?]) -> FunctionExpr {
+    let transformedElements = elements.map { element in
+      sendableToExpr(element)
+    }
+    return FunctionExpr("array", transformedElements)
+  }
+
+  // This function is used to convert Swift type into Objective-C type.
+  static func sendableToAnyObjectForRawStage(_ value: Sendable?) -> AnyObject {
+    guard let value = value, !(value is NSNull) else {
+      return Constant.nil.bridge
+    }
+
+    if let exprValue = value as? Expr {
+      return exprValue.toBridge()
+    } else if let aggregateFunctionValue = value as? AggregateFunction {
+      return aggregateFunctionValue.toBridge()
+    } else if let dictionaryValue = value as? [String: Sendable?] {
+      let mappedValue: [String: Sendable] = dictionaryValue.mapValues {
+        if let aggFunc = $0 as? AggregateFunction {
+          return aggFunc.toBridge()
+        }
+        return sendableToExpr($0).toBridge()
+      }
+      return mappedValue as NSDictionary
+    } else {
+      return Constant(value).bridge
+    }
+  }
+
+  static func convertObjCToSwift(_ objValue: Sendable) -> Sendable? {
+    switch objValue {
+    case is NSNull:
+      return nil
+
+    default:
+      return objValue
+    }
+  }
+}
diff --git a/Firestore/Swift/Source/PipelineWrapper.swift b/Firestore/Swift/Source/PipelineWrapper.swift
new file mode 100644
index 00000000000..a057c2e4ea2
--- /dev/null
+++ b/Firestore/Swift/Source/PipelineWrapper.swift
@@ -0,0 +1,26 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+protocol BridgeWrapper {
+  var bridge: ExprBridge { get }
+}
+
+protocol AggregateBridgeWrapper {
+  var bridge: AggregateFunctionBridge { get }
+}
+
+protocol SelectableWrapper: Sendable {
+  var alias: String { get }
+  var expr: Expr { get }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Firestore+Pipeline.swift b/Firestore/Swift/Source/SwiftAPI/Firestore+Pipeline.swift
new file mode 100644
index 00000000000..e35a9bceac5
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Firestore+Pipeline.swift
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+import Foundation
+
+@objc public extension Firestore {
+  @available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+  @nonobjc func pipeline() -> PipelineSource {
+    return PipelineSource(self)
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/AggregateFunction.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/AggregateFunction.swift
new file mode 100644
index 00000000000..6d7e05098a9
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/AggregateFunction.swift
@@ -0,0 +1,40 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+extension AggregateFunction {
+  func toBridge() -> AggregateFunctionBridge {
+    return (self as AggregateBridgeWrapper).bridge
+  }
+}
+
+public class AggregateFunction: AggregateBridgeWrapper, @unchecked Sendable {
+  let bridge: AggregateFunctionBridge
+
+  let functionName: String
+  let args: [Expr]
+
+  public init(_ functionName: String, _ args: [Expr]) {
+    self.functionName = functionName
+    self.args = args
+    bridge = AggregateFunctionBridge(
+      name: functionName,
+      args: self.args.map { $0.toBridge()
+      }
+    )
+  }
+
+  public func `as`(_ name: String) -> AggregateWithAlias {
+    return AggregateWithAlias(aggregate: self, alias: name)
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/AggregateWithAlias.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/AggregateWithAlias.swift
new file mode 100644
index 00000000000..8a1871907c6
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/AggregateWithAlias.swift
@@ -0,0 +1,18 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public struct AggregateWithAlias {
+  public let aggregate: AggregateFunction
+  public let alias: String
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/CountAll.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/CountAll.swift
new file mode 100644
index 00000000000..064eb6d99bc
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Aggregation/CountAll.swift
@@ -0,0 +1,19 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class CountAll: AggregateFunction, @unchecked Sendable {
+  public init() {
+    super.init("count", [])
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/ArrayContains.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/ArrayContains.swift
new file mode 100644
index 00000000000..7a70cfbc77b
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/ArrayContains.swift
@@ -0,0 +1,19 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class ArrayContains: BooleanExpr, @unchecked Sendable {
+  public init(fieldName: String, values: Sendable...) {
+    super.init("array_contains", values.map { Helper.sendableToExpr($0) })
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Ascending.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Ascending.swift
new file mode 100644
index 00000000000..e872b6e7f8a
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Ascending.swift
@@ -0,0 +1,19 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class Ascending: Ordering, @unchecked Sendable {
+  public init(_ fieldName: String) {
+    super.init(expr: Field(fieldName), direction: .ascending)
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Descending.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Descending.swift
new file mode 100644
index 00000000000..584d7b7ada3
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Descending.swift
@@ -0,0 +1,19 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class Descending: Ordering, @unchecked Sendable {
+  public init(_ fieldName: String) {
+    super.init(expr: Field(fieldName), direction: .descending)
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/DistanceMeasure.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/DistanceMeasure.swift
new file mode 100644
index 00000000000..6bd54e9e71b
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/DistanceMeasure.swift
@@ -0,0 +1,47 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+
+import Foundation
+
+public struct DistanceMeasure: Sendable, Equatable, Hashable {
+  let kind: Kind
+
+  enum Kind: String {
+    case euclidean
+    case cosine
+    case dotProduct = "dot_product"
+  }
+
+  public static var euclidean: DistanceMeasure {
+    return self.init(kind: .euclidean)
+  }
+
+  public static var cosine: DistanceMeasure {
+    return self.init(kind: .cosine)
+  }
+
+  public static var dotProduct: DistanceMeasure {
+    return self.init(kind: .dotProduct)
+  }
+
+  init(kind: Kind) {
+    self.kind = kind
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr.swift
new file mode 100644
index 00000000000..d05c6a4c251
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr.swift
@@ -0,0 +1,1554 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+import Foundation
+
+// TODO: the implementation of `Expr` is not complete
+public protocol Expr: Sendable {
+  /// Assigns an alias to this expression.
+  ///
+  /// Aliases are useful for renaming fields in the output of a stage or for giving meaningful
+  /// names to calculated values.
+  ///
+  /// ```swift
+  /// // Calculate total price and alias it "totalPrice"
+  /// Field("price").multiply(Field("quantity")).`as`("totalPrice")
+  /// ```
+  ///
+  /// - Parameter name: The alias to assign to this expression.
+  /// - Returns: A new `ExprWithAlias` wrapping this expression with the alias.
+  func `as`(_ name: String) -> ExprWithAlias
+
+  // --- Added Mathematical Operations ---
+
+  /// Creates an expression that adds this expression to one or more other expressions.
+  /// Assumes `self` and all parameters evaluate to compatible types for addition (e.g., numbers, or
+  /// string/array concatenation if supported by the specific "add" implementation).
+  ///
+  /// ```swift
+  /// // Add the value of the 'quantity' field and the 'reserve' field.
+  /// Field("quantity").add(Field("reserve"))
+  ///
+  /// // Add multiple numeric fields
+  /// Field("subtotal").add(Field("tax"), Field("shipping"))
+  /// ```
+  ///
+  /// - Parameter value: Expr` values to add.
+  /// - Returns: A new `FunctionExpr` representing the addition operation.
+  func add(_ value: Expr) -> FunctionExpr
+
+  /// Creates an expression that adds this expression to one or more literal values.
+  /// Assumes `self` and all parameters evaluate to compatible types for addition.
+  ///
+  /// ```swift
+  /// // Add 5 to the 'count' field
+  /// Field("count").add(5)
+  ///
+  /// // Add multiple literal numbers
+  /// Field("score").add(10, 20, -5)
+  /// ```
+  ///
+  /// - Parameter value: Expr` value to add.
+  /// - Returns: A new `FunctionExpr` representing the addition operation.
+  func add(_ value: Sendable) -> FunctionExpr
+
+  /// Creates an expression that subtracts another expression from this expression.
+  /// Assumes `self` and `other` evaluate to numeric types.
+  ///
+  /// ```swift
+  /// // Subtract the 'discount' field from the 'price' field
+  /// Field("price").subtract(Field("discount"))
+  /// ```
+  ///
+  /// - Parameter other: The `Expr` (evaluating to a number) to subtract from this expression.
+  /// - Returns: A new `FunctionExpr` representing the subtraction operation.
+  func subtract(_ other: Expr) -> FunctionExpr
+
+  /// Creates an expression that subtracts a literal value from this expression.
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Subtract 20 from the value of the 'total' field
+  /// Field("total").subtract(20)
+  /// ```
+  ///
+  /// - Parameter other: The `Sendable` literal (numeric) value to subtract from this expression.
+  /// - Returns: A new `FunctionExpr` representing the subtraction operation.
+  func subtract(_ other: Sendable) -> FunctionExpr
+
+  /// Creates an expression that multiplies this expression by one or more other expressions.
+  /// Assumes `self` and all parameters evaluate to numeric types.
+  ///
+  /// ```swift
+  /// // Multiply the 'quantity' field by the 'price' field
+  /// Field("quantity").multiply(Field("price"))
+  ///
+  /// // Multiply 'rate' by 'time' and 'conversionFactor' fields
+  /// Field("rate").multiply(Field("time"), Field("conversionFactor"))
+  /// ```
+  ///
+  /// - Parameter value: `Expr` value to multiply by.
+  /// - Returns: A new `FunctionExpr` representing the multiplication operation.
+  func multiply(_ value: Expr) -> FunctionExpr
+
+  /// Creates an expression that multiplies this expression by one or more literal values.
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Multiply the 'score' by 1.1
+  /// Field("score").multiply(1.1)
+  ///
+  /// // Multiply 'base' by 2 and then by 3.0
+  /// Field("base").multiply(2, 3.0)
+  /// ```
+  ///
+  /// - Parameter value: `Sendable` literal value to multiply by.
+  /// - Returns: A new `FunctionExpr` representing the multiplication operation.
+  func multiply(_ value: Sendable) -> FunctionExpr
+
+  /// Creates an expression that divides this expression by another expression.
+  /// Assumes `self` and `other` evaluate to numeric types.
+  ///
+  /// ```swift
+  /// // Divide the 'total' field by the 'count' field
+  /// Field("total").divide(Field("count"))
+  /// ```
+  ///
+  /// - Parameter other: The `Expr` (evaluating to a number) to divide by.
+  /// - Returns: A new `FunctionExpr` representing the division operation.
+  func divide(_ other: Expr) -> FunctionExpr
+
+  /// Creates an expression that divides this expression by a literal value.
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Divide the 'value' field by 10
+  /// Field("value").divide(10)
+  /// ```
+  ///
+  /// - Parameter other: The `Sendable` literal (numeric) value to divide by.
+  /// - Returns: A new `FunctionExpr` representing the division operation.
+  func divide(_ other: Sendable) -> FunctionExpr
+
+  /// Creates an expression that calculates the modulo (remainder) of dividing this expression by
+  /// another expression.
+  /// Assumes `self` and `other` evaluate to numeric types.
+  ///
+  /// ```swift
+  /// // Calculate the remainder of dividing the 'value' field by the 'divisor' field
+  /// Field("value").mod(Field("divisor"))
+  /// ```
+  ///
+  /// - Parameter other: The `Expr` (evaluating to a number) to use as the divisor.
+  /// - Returns: A new `FunctionExpr` representing the modulo operation.
+  func mod(_ other: Expr) -> FunctionExpr
+
+  /// Creates an expression that calculates the modulo (remainder) of dividing this expression by a
+  /// literal value.
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Calculate the remainder of dividing the 'value' field by 10
+  /// Field("value").mod(10)
+  /// ```
+  ///
+  /// - Parameter other: The `Sendable` literal (numeric) value to use as the divisor.
+  /// - Returns: A new `FunctionExpr` representing the modulo operation.
+  func mod(_ other: Sendable) -> FunctionExpr
+
+  // --- Added Array Operations ---
+
+  /// Creates an expression that concatenates an array expression (from `self`) with one or more
+  /// other array expressions.
+  /// Assumes `self` and all parameters evaluate to arrays.
+  ///
+  /// ```swift
+  /// // Combine the 'items' array with 'otherItems' and 'archiveItems' array fields.
+  /// Field("items").arrayConcat(Field("otherItems"), Field("archiveItems"))
+  /// ```
+  /// - Parameter secondArray: An `Expr` (evaluating to an array) to concatenate.
+  /// - Parameter otherArrays: Optional additional `Expr` values (evaluating to arrays) to
+  /// concatenate.
+  /// - Returns: A new `FunctionExpr` representing the concatenated array.
+  func arrayConcat(_ secondArray: Expr, _ otherArrays: Expr...) -> FunctionExpr
+
+  /// Creates an expression that concatenates an array expression (from `self`) with one or more
+  /// array literals.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Combine 'tags' (an array field) with ["new", "featured"] and ["urgent"]
+  /// Field("tags").arrayConcat(["new", "featured"], ["urgent"])
+  /// ```
+  /// - Parameter secondArray: An array literal of `Sendable` values to concatenate.
+  /// - Parameter otherArrays: Optional additional array literals of `Sendable` values to
+  /// concatenate.
+  /// - Returns: A new `FunctionExpr` representing the concatenated array.
+  func arrayConcat(_ secondArray: [Sendable], _ otherArrays: [Sendable]...) -> FunctionExpr
+
+  /// Creates an expression that checks if an array (from `self`) contains a specific element
+  /// expression.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Check if 'sizes' contains the value from 'selectedSize' field
+  /// Field("sizes").arrayContains(Field("selectedSize"))
+  /// ```
+  ///
+  /// - Parameter element: The `Expr` representing the element to search for in the array.
+  /// - Returns: A new `BooleanExpr` representing the 'array_contains' comparison.
+  func arrayContains(_ element: Expr) -> BooleanExpr
+
+  /// Creates an expression that checks if an array (from `self`) contains a specific literal
+  /// element.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Check if 'colors' array contains "red"
+  /// Field("colors").arrayContains("red")
+  /// ```
+  ///
+  /// - Parameter element: The `Sendable` literal element to search for in the array.
+  /// - Returns: A new `BooleanExpr` representing the 'array_contains' comparison.
+  func arrayContains(_ element: Sendable) -> BooleanExpr
+
+  /// Creates an expression that checks if an array (from `self`) contains all the specified element
+  /// expressions.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Check if 'candidateSkills' contains all skills from 'requiredSkill1' and 'requiredSkill2'
+  /// fields
+  /// Field("candidateSkills").arrayContainsAll([Field("requiredSkill1"), Field("requiredSkill2")])
+  /// ```
+  ///
+  /// - Parameter values: A list of `Expr` elements to check for in the array represented
+  /// by `self`.
+  /// - Returns: A new `BooleanExpr` representing the 'array_contains_all' comparison.
+  func arrayContainsAll(_ values: [Expr]) -> BooleanExpr
+
+  /// Creates an expression that checks if an array (from `self`) contains all the specified literal
+  /// elements.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Check if 'tags' contains both "urgent" and "review"
+  /// Field("tags").arrayContainsAll(["urgent", "review"])
+  /// ```
+  ///
+  /// - Parameter values: A list of `Sendable` literal elements to check for in the array
+  /// represented by `self`.
+  /// - Returns: A new `BooleanExpr` representing the 'array_contains_all' comparison.
+  func arrayContainsAll(_ values: [Sendable]) -> BooleanExpr
+
+  /// Creates an expression that checks if an array (from `self`) contains any of the specified
+  /// element expressions.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Check if 'userGroups' contains any group from 'allowedGroup1' or 'allowedGroup2' fields
+  /// Field("userGroups").arrayContainsAny([Field("allowedGroup1"), Field("allowedGroup2")])
+  /// ```
+  ///
+  /// - Parameter values: A list of `Expr` elements to check for in the array represented
+  /// by `self`.
+  /// - Returns: A new `BooleanExpr` representing the 'array_contains_any' comparison.
+  func arrayContainsAny(_ values: [Expr]) -> BooleanExpr
+
+  /// Creates an expression that checks if an array (from `self`) contains any of the specified
+  /// literal elements.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Check if 'categories' contains either "electronics" or "books"
+  /// Field("categories").arrayContainsAny(["electronics", "books"])
+  /// ```
+  ///
+  /// - Parameter values: A list of `Sendable` literal elements to check for in the array
+  /// represented by `self`.
+  /// - Returns: A new `BooleanExpr` representing the 'array_contains_any' comparison.
+  func arrayContainsAny(_ values: [Sendable]) -> BooleanExpr
+
+  /// Creates an expression that calculates the length of an array.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Get the number of items in the 'cart' array
+  /// Field("cart").arrayLength()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the length of the array.
+  func arrayLength() -> FunctionExpr
+
+  /// Creates an expression that accesses an element in an array (from `self`) at the specified
+  /// integer offset.
+  /// A negative offset starts from the end. If the offset is out of bounds, an error may be
+  /// returned during evaluation.
+  /// Assumes `self` evaluates to an array.
+  ///
+  /// ```swift
+  /// // Return the value in the 'tags' field array at index 1.
+  /// Field("tags").arrayGet(1)
+  /// // Return the last element in the 'tags' field array.
+  /// Field("tags").arrayGet(-1)
+  /// ```
+  ///
+  /// - Parameter offset: The literal `Int` offset of the element to return.
+  /// - Returns: A new `FunctionExpr` representing the 'arrayGet' operation.
+  func arrayGet(_ offset: Int) -> FunctionExpr
+
+  /// Creates an expression that accesses an element in an array (from `self`) at the offset
+  /// specified by an expression.
+  /// A negative offset starts from the end. If the offset is out of bounds, an error may be
+  /// returned during evaluation.
+  /// Assumes `self` evaluates to an array and `offsetExpr` evaluates to an integer.
+  ///
+  /// ```swift
+  /// // Return the value in the tags field array at index specified by field 'favoriteTagIndex'.
+  /// Field("tags").arrayGet(Field("favoriteTagIndex"))
+  /// ```
+  ///
+  /// - Parameter offsetExpr: An `Expr` (evaluating to an Int) representing the offset of the
+  /// element to return.
+  /// - Returns: A new `FunctionExpr` representing the 'arrayGet' operation.
+  func arrayGet(_ offsetExpr: Expr) -> FunctionExpr
+
+  // MARK: Equality with Sendable
+
+  /// Creates an expression that checks if this expression is equal to any of the provided
+  /// expression values.
+  /// This is similar to an "IN" operator in SQL.
+  ///
+  /// ```swift
+  /// // Check if 'categoryID' field is equal to 'featuredCategory' or 'popularCategory' fields
+  /// Field("categoryID").eqAny([Field("featuredCategory"), Field("popularCategory")])
+  /// ```
+  ///
+  /// - Parameter others: A list of `Expr` values to check against.
+  /// - Returns: A new `BooleanExpr` representing the 'IN' comparison (eq_any).
+  func eqAny(_ others: [Expr]) -> BooleanExpr
+
+  /// Creates an expression that checks if this expression is equal to any of the provided literal
+  /// values.
+  /// This is similar to an "IN" operator in SQL.
+  ///
+  /// ```swift
+  /// // Check if 'category' is "Electronics", "Books", or "Home Goods"
+  /// Field("category").eqAny(["Electronics", "Books", "Home Goods"])
+  /// ```
+  ///
+  /// - Parameter others: A list of `Sendable` literal values to check against.
+  /// - Returns: A new `BooleanExpr` representing the 'IN' comparison (eq_any).
+  func eqAny(_ others: [Sendable]) -> BooleanExpr
+
+  /// Creates an expression that checks if this expression is not equal to any of the provided
+  /// expression values.
+  /// This is similar to a "NOT IN" operator in SQL.
+  ///
+  /// ```swift
+  /// // Check if 'statusValue' is not equal to 'archivedStatus' or 'deletedStatus' fields
+  /// Field("statusValue").notEqAny([Field("archivedStatus"), Field("deletedStatus")])
+  /// ```
+  ///
+  /// - Parameter others: A list of `Expr` values to check against.
+  /// - Returns: A new `BooleanExpr` representing the 'NOT IN' comparison (not_eq_any).
+  func notEqAny(_ others: [Expr]) -> BooleanExpr
+
+  /// Creates an expression that checks if this expression is not equal to any of the provided
+  /// literal values.
+  /// This is similar to a "NOT IN" operator in SQL.
+  ///
+  /// ```swift
+  /// // Check if 'status' is neither "pending" nor "archived"
+  /// Field("status").notEqAny(["pending", "archived"])
+  /// ```
+  ///
+  /// - Parameter others: A list of `Sendable` literal values to check against.
+  /// - Returns: A new `BooleanExpr` representing the 'NOT IN' comparison (not_eq_any).
+  func notEqAny(_ others: [Sendable]) -> BooleanExpr
+
+  // MARK: Checks
+
+  /// Creates an expression that checks if this expression evaluates to 'NaN' (Not a Number).
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Check if the result of a calculation is NaN
+  /// Field("value").divide(0).isNan()
+  /// ```
+  ///
+  /// - Returns: A new `BooleanExpr` representing the 'isNaN' check.
+  func isNan() -> BooleanExpr
+
+  /// Creates an expression that checks if this expression evaluates to 'Null'.
+  ///
+  /// ```swift
+  /// // Check if the 'optionalField' is null
+  /// Field("optionalField").isNull()
+  /// ```
+  ///
+  /// - Returns: A new `BooleanExpr` representing the 'isNull' check.
+  func isNull() -> BooleanExpr
+
+  /// Creates an expression that checks if a field exists in the document.
+  ///
+  /// - Note: This typically only makes sense when `self` is a `Field` expression.
+  ///
+  /// ```swift
+  /// // Check if the document has a field named "phoneNumber"
+  /// Field("phoneNumber").exists()
+  /// ```
+  ///
+  /// - Returns: A new `BooleanExpr` representing the 'exists' check.
+  func exists() -> BooleanExpr
+
+  /// Creates an expression that checks if this expression produces an error during evaluation.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Check if accessing a non-existent array index causes an error
+  /// Field("myArray").arrayGet(100).isError()
+  /// ```
+  ///
+  /// - Returns: A new `BooleanExpr` representing the 'isError' check.
+  func isError() -> BooleanExpr
+
+  /// Creates an expression that returns `true` if the result of this expression
+  /// is absent (e.g., a field does not exist in a map). Otherwise, returns `false`, even if the
+  /// value is `null`.
+  ///
+  /// - Note: This API is in beta.
+  /// - Note: This typically only makes sense when `self` is a `Field` expression.
+  ///
+  /// ```swift
+  /// // Check if the field `value` is absent.
+  /// Field("value").isAbsent()
+  /// ```
+  ///
+  /// - Returns: A new `BooleanExpr` representing the 'isAbsent' check.
+  func isAbsent() -> BooleanExpr
+
+  /// Creates an expression that checks if the result of this expression is not null.
+  ///
+  /// ```swift
+  /// // Check if the value of the 'name' field is not null
+  /// Field("name").isNotNull()
+  /// ```
+  ///
+  /// - Returns: A new `BooleanExpr` representing the 'isNotNull' check.
+  func isNotNull() -> BooleanExpr
+
+  /// Creates an expression that checks if the results of this expression is NOT 'NaN' (Not a
+  /// Number).
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Check if the result of a calculation is NOT NaN
+  /// Field("value").divide(Field("count")).isNotNan() // Assuming count might be 0
+  /// ```
+  ///
+  /// - Returns: A new `BooleanExpr` representing the 'isNotNaN' check.
+  func isNotNan() -> BooleanExpr
+
+  // MARK: String Operations
+
+  /// Creates an expression that calculates the character length of a string in UTF-8.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Get the character length of the 'name' field in its UTF-8 form.
+  /// Field("name").charLength()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the length of the string.
+  func charLength() -> FunctionExpr
+
+  /// Creates an expression that performs a case-sensitive string comparison using wildcards against
+  /// a literal pattern.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if the 'title' field contains the word "guide" (case-sensitive)
+  /// Field("title").like("%guide%")
+  /// ```
+  ///
+  /// - Parameter pattern: The literal string pattern to search for. Use "%" as a wildcard.
+  /// - Returns: A new `FunctionExpr` representing the 'like' comparison.
+  func like(_ pattern: String) -> BooleanExpr
+
+  /// Creates an expression that performs a case-sensitive string comparison using wildcards against
+  /// an expression pattern.
+  /// Assumes `self` evaluates to a string, and `pattern` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if 'filename' matches a pattern stored in 'patternField'
+  /// Field("filename").like(Field("patternField"))
+  /// ```
+  ///
+  /// - Parameter pattern: An `Expr` (evaluating to a string) representing the pattern to search
+  /// for.
+  /// - Returns: A new `FunctionExpr` representing the 'like' comparison.
+  func like(_ pattern: Expr) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) contains a specified regular
+  /// expression literal as a substring.
+  /// Uses RE2 syntax. Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if 'description' contains "example" (case-insensitive)
+  /// Field("description").regexContains("(?i)example")
+  /// ```
+  ///
+  /// - Parameter pattern: The literal string regular expression to use for the search.
+  /// - Returns: A new `BooleanExpr` representing the 'regex_contains' comparison.
+  func regexContains(_ pattern: String) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) contains a specified regular
+  /// expression (from an expression) as a substring.
+  /// Uses RE2 syntax. Assumes `self` evaluates to a string, and `pattern` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if 'logEntry' contains a pattern from 'errorPattern' field
+  /// Field("logEntry").regexContains(Field("errorPattern"))
+  /// ```
+  ///
+  /// - Parameter pattern: An `Expr` (evaluating to a string) representing the regular expression to
+  /// use for the search.
+  /// - Returns: A new `BooleanExpr` representing the 'regex_contains' comparison.
+  func regexContains(_ pattern: Expr) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) matches a specified regular
+  /// expression literal entirely.
+  /// Uses RE2 syntax. Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if the 'email' field matches a valid email pattern
+  /// Field("email").regexMatch("[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}")
+  /// ```
+  ///
+  /// - Parameter pattern: The literal string regular expression to use for the match.
+  /// - Returns: A new `BooleanExpr` representing the regular expression match.
+  func regexMatch(_ pattern: String) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) matches a specified regular
+  /// expression (from an expression) entirely.
+  /// Uses RE2 syntax. Assumes `self` evaluates to a string, and `pattern` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if 'input' matches the regex stored in 'validationRegex'
+  /// Field("input").regexMatch(Field("validationRegex"))
+  /// ```
+  ///
+  /// - Parameter pattern: An `Expr` (evaluating to a string) representing the regular expression to
+  /// use for the match.
+  /// - Returns: A new `BooleanExpr` representing the regular expression match.
+  func regexMatch(_ pattern: Expr) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) contains a specified literal
+  /// substring (case-sensitive).
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if the 'description' field contains "example".
+  /// Field("description").strContains("example")
+  /// ```
+  ///
+  /// - Parameter substring: The literal string substring to search for.
+  /// - Returns: A new `BooleanExpr` representing the 'str_contains' comparison.
+  func strContains(_ substring: String) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) contains a specified substring
+  /// from an expression (case-sensitive).
+  /// Assumes `self` evaluates to a string, and `expr` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if the 'message' field contains the value of the 'keyword' field.
+  /// Field("message").strContains(Field("keyword"))
+  /// ```
+  ///
+  /// - Parameter expr: An `Expr` (evaluating to a string) representing the substring to search for.
+  /// - Returns: A new `BooleanExpr` representing the 'str_contains' comparison.
+  func strContains(_ expr: Expr) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) starts with a given literal prefix
+  /// (case-sensitive).
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if the 'name' field starts with "Mr."
+  /// Field("name").startsWith("Mr.")
+  /// ```
+  ///
+  /// - Parameter prefix: The literal string prefix to check for.
+  /// - Returns: A new `BooleanExpr` representing the 'starts_with' comparison.
+  func startsWith(_ prefix: String) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) starts with a given prefix from an
+  /// expression (case-sensitive).
+  /// Assumes `self` evaluates to a string, and `prefix` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if 'fullName' starts with the value of 'firstName'
+  /// Field("fullName").startsWith(Field("firstName"))
+  /// ```
+  ///
+  /// - Parameter prefix: An `Expr` (evaluating to a string) representing the prefix to check for.
+  /// - Returns: A new `BooleanExpr` representing the 'starts_with' comparison.
+  func startsWith(_ prefix: Expr) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) ends with a given literal suffix
+  /// (case-sensitive).
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if the 'filename' field ends with ".txt"
+  /// Field("filename").endsWith(".txt")
+  /// ```
+  ///
+  /// - Parameter suffix: The literal string suffix to check for.
+  /// - Returns: A new `BooleanExpr` representing the 'ends_with' comparison.
+  func endsWith(_ suffix: String) -> BooleanExpr
+
+  /// Creates an expression that checks if a string (from `self`) ends with a given suffix from an
+  /// expression (case-sensitive).
+  /// Assumes `self` evaluates to a string, and `suffix` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Check if 'url' ends with the value of 'extension' field
+  /// Field("url").endsWith(Field("extension"))
+  /// ```
+  ///
+  /// - Parameter suffix: An `Expr` (evaluating to a string) representing the suffix to check for.
+  /// - Returns: A new `BooleanExpr` representing the 'ends_with' comparison.
+  func endsWith(_ suffix: Expr) -> BooleanExpr
+
+  /// Creates an expression that converts a string (from `self`) to lowercase.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Convert the 'name' field to lowercase
+  /// Field("name").lowercased()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the lowercase string.
+  func lowercased() -> FunctionExpr
+
+  /// Creates an expression that converts a string (from `self`) to uppercase.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Convert the 'title' field to uppercase
+  /// Field("title").uppercased()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the uppercase string.
+  func uppercased() -> FunctionExpr
+
+  /// Creates an expression that removes leading and trailing whitespace from a string (from
+  /// `self`).
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Trim whitespace from the 'userInput' field
+  /// Field("userInput").trim()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the trimmed string.
+  func trim() -> FunctionExpr
+
+  /// Creates an expression that concatenates this string expression with other string expressions.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Combine 'part1', 'part2', and 'part3' fields
+  /// Field("part1").strConcat(Field("part2"), Field("part3"))
+  /// ```
+  ///
+  /// - Parameter secondString: An `Expr` (evaluating to a string) to concatenate.
+  /// - Parameter otherStrings: Optional additional `Expr` (evaluating to strings) to concatenate.
+  /// - Returns: A new `FunctionExpr` representing the concatenated string.
+  func strConcat(_ secondString: Expr, _ otherStrings: Expr...) -> FunctionExpr
+
+  /// Creates an expression that concatenates this string expression with other string literals.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Combine 'firstName', " ", and 'lastName'
+  /// Field("firstName").strConcat(" ", "lastName")
+  /// ```
+  ///
+  /// - Parameter secondString: A string literal to concatenate.
+  /// - Parameter otherStrings: Optional additional string literals to concatenate.
+  /// - Returns: A new `FunctionExpr` representing the concatenated string.
+  func strConcat(_ secondString: String, _ otherStrings: String...) -> FunctionExpr
+
+  /// Creates an expression that reverses this string expression.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Reverse the value of the 'myString' field.
+  /// Field("myString").reverse()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the reversed string.
+  func reverse() -> FunctionExpr
+
+  /// Creates an expression that replaces the first occurrence of a literal substring within this
+  /// string expression with another literal substring.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Replace the first "hello" with "hi" in the 'message' field
+  /// Field("message").replaceFirst("hello", "hi")
+  /// ```
+  ///
+  /// - Parameter find: The literal string substring to search for.
+  /// - Parameter replace: The literal string substring to replace the first occurrence with.
+  /// - Returns: A new `FunctionExpr` representing the string with the first occurrence replaced.
+  func replaceFirst(_ find: String, _ replace: String) -> FunctionExpr
+
+  /// Creates an expression that replaces the first occurrence of a substring (from an expression)
+  /// within this string expression with another substring (from an expression).
+  /// Assumes `self` evaluates to a string, and `find`/`replace` evaluate to strings.
+  ///
+  /// ```swift
+  /// // Replace first occurrence of field 'findPattern' with field 'replacePattern' in 'text'
+  /// Field("text").replaceFirst(Field("findPattern"), Field("replacePattern"))
+  /// ```
+  ///
+  /// - Parameter find: An `Expr` (evaluating to a string) for the substring to search for.
+  /// - Parameter replace: An `Expr` (evaluating to a string) for the substring to replace the first
+  /// occurrence with.
+  /// - Returns: A new `FunctionExpr` representing the string with the first occurrence replaced.
+  func replaceFirst(_ find: Expr, _ replace: Expr) -> FunctionExpr
+
+  /// Creates an expression that replaces all occurrences of a literal substring within this string
+  /// expression with another literal substring.
+  /// Assumes `self` evaluates to a string.
+  ///
+  /// ```swift
+  /// // Replace all occurrences of " " with "_" in 'description'
+  /// Field("description").replaceAll(" ", "_")
+  /// ```
+  ///
+  /// - Parameter find: The literal string substring to search for.
+  /// - Parameter replace: The literal string substring to replace all occurrences with.
+  /// - Returns: A new `FunctionExpr` representing the string with all occurrences replaced.
+  func replaceAll(_ find: String, _ replace: String) -> FunctionExpr
+
+  /// Creates an expression that replaces all occurrences of a substring (from an expression) within
+  /// this string expression with another substring (from an expression).
+  /// Assumes `self` evaluates to a string, and `find`/`replace` evaluate to strings.
+  ///
+  /// ```swift
+  /// // Replace all occurrences of field 'target' with field 'replacement' in 'content'
+  /// Field("content").replaceAll(Field("target"), Field("replacement"))
+  /// ```
+  ///
+  /// - Parameter find: An `Expr` (evaluating to a string) for the substring to search for.
+  /// - Parameter replace: An `Expr` (evaluating to a string) for the substring to replace all
+  /// occurrences with.
+  /// - Returns: A new `FunctionExpr` representing the string with all occurrences replaced.
+  func replaceAll(_ find: Expr, _ replace: Expr) -> FunctionExpr
+
+  /// Creates an expression that calculates the length of this string or bytes expression in bytes.
+  /// Assumes `self` evaluates to a string or bytes.
+  ///
+  /// ```swift
+  /// // Calculate the length of the 'myString' field in bytes.
+  /// Field("myString").byteLength()
+  ///
+  /// // Calculate the size of the 'avatar' (Data/Bytes) field.
+  /// Field("avatar").byteLength()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the length in bytes.
+  func byteLength() -> FunctionExpr
+
+  /// Creates an expression that returns a substring of this expression (String or Bytes) using
+  /// literal integers for position and optional length.
+  /// Indexing is 0-based. Assumes `self` evaluates to a string or bytes.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Get substring from index 5 with length 10
+  /// Field("myString").substr(5, 10)
+  ///
+  /// // Get substring from 'myString' starting at index 3 to the end
+  /// Field("myString").substr(3, nil)
+  /// ```
+  ///
+  /// - Parameter position: Literal `Int` index of the first character/byte.
+  /// - Parameter length: Optional literal `Int` length of the substring. If `nil`, goes to the end.
+  /// - Returns: A new `FunctionExpr` representing the substring.
+  func substr(_ position: Int, _ length: Int?) -> FunctionExpr
+
+  /// Creates an expression that returns a substring of this expression (String or Bytes) using
+  /// expressions for position and optional length.
+  /// Indexing is 0-based. Assumes `self` evaluates to a string or bytes, and parameters evaluate to
+  /// integers.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Get substring from index calculated by Field("start") with length from Field("len")
+  /// Field("myString").substr(Field("start"), Field("len"))
+  ///
+  /// // Get substring from index calculated by Field("start") to the end
+  /// Field("myString").substr(Field("start"), nil) // Passing nil for optional Expr length
+  /// ```
+  ///
+  /// - Parameter position: An `Expr` (evaluating to an Int) for the index of the first
+  /// character/byte.
+  /// - Parameter length: Optional `Expr` (evaluating to an Int) for the length of the substring. If
+  /// `nil`, goes to the end.
+  /// - Returns: A new `FunctionExpr` representing the substring.
+  func substr(_ position: Expr, _ length: Expr?) -> FunctionExpr
+
+  // MARK: Map Operations
+
+  /// Accesses a value from a map (object) field using the provided literal string key.
+  /// Assumes `self` evaluates to a Map.
+  ///
+  /// ```swift
+  /// // Get the 'city' value from the 'address' map field
+  /// Field("address").mapGet("city")
+  /// ```
+  ///
+  /// - Parameter subfield: The literal string key to access in the map.
+  /// - Returns: A new `FunctionExpr` representing the value associated with the given key.
+  func mapGet(_ subfield: String) -> FunctionExpr
+
+  /// Creates an expression that removes a key (specified by a literal string) from the map produced
+  /// by evaluating this expression.
+  /// Assumes `self` evaluates to a Map.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Removes the key 'baz' from the map held in field 'myMap'
+  /// Field("myMap").mapRemove("baz")
+  /// ```
+  ///
+  /// - Parameter key: The literal string key to remove from the map.
+  /// - Returns: A new `FunctionExpr` representing the 'map_remove' operation.
+  func mapRemove(_ key: String) -> FunctionExpr
+
+  /// Creates an expression that removes a key (specified by an expression) from the map produced by
+  /// evaluating this expression.
+  /// Assumes `self` evaluates to a Map, and `keyExpr` evaluates to a string.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Removes the key specified by field 'keyToRemove' from the map in 'settings'
+  /// Field("settings").mapRemove(Field("keyToRemove"))
+  /// ```
+  ///
+  /// - Parameter keyExpr: An `Expr` (evaluating to a string) representing the key to remove from
+  /// the map.
+  /// - Returns: A new `FunctionExpr` representing the 'map_remove' operation.
+  func mapRemove(_ keyExpr: Expr) -> FunctionExpr
+
+  /// Creates an expression that merges this map with multiple other map literals.
+  /// Assumes `self` evaluates to a Map. Later maps overwrite keys from earlier maps.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Merge 'settings' field with { "enabled": true } and another map literal { "priority": 1 }
+  /// Field("settings").mapMerge(["enabled": true], ["priority": 1])
+  /// ```
+  ///
+  /// - Parameter secondMap: A required second map (dictionary literal with `Sendable` values) to
+  /// merge.
+  /// - Parameter otherMaps: Optional additional maps (dictionary literals with `Sendable` values)
+  /// to merge.
+  /// - Returns: A new `FunctionExpr` representing the 'map_merge' operation.
+  func mapMerge(_ secondMap: [String: Sendable], _ otherMaps: [String: Sendable]...) -> FunctionExpr
+
+  /// Creates an expression that merges this map with multiple other map expressions.
+  /// Assumes `self` and other arguments evaluate to Maps. Later maps overwrite keys from earlier
+  /// maps.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Merge 'baseSettings' field with 'userOverrides' field and 'adminConfig' field
+  /// Field("baseSettings").mapMerge(Field("userOverrides"), Field("adminConfig"))
+  /// ```
+  ///
+  /// - Parameter secondMap: A required second `Expr` (evaluating to a Map) to merge.
+  /// - Parameter otherMaps: Optional additional `Expr` (evaluating to Maps) to merge.
+  /// - Returns: A new `FunctionExpr` representing the 'map_merge' operation.
+  func mapMerge(_ secondMap: Expr, _ otherMaps: Expr...) -> FunctionExpr
+
+  // MARK: Aggregations
+
+  /// Creates an aggregation that counts the number of stage inputs where this expression evaluates
+  /// to a valid, non-null value.
+  ///
+  /// ```swift
+  /// // Count the total number of products with a 'productId'
+  /// Field("productId").count().alias("totalProducts")
+  /// ```
+  ///
+  /// - Returns: A new `AggregateFunction` representing the 'count' aggregation on this expression.
+  func count() -> AggregateFunction
+
+  /// Creates an aggregation that calculates the sum of this numeric expression across multiple
+  /// stage inputs.
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Calculate the total revenue from a set of orders
+  /// Field("orderAmount").sum().alias("totalRevenue")
+  /// ```
+  ///
+  /// - Returns: A new `AggregateFunction` representing the 'sum' aggregation.
+  func sum() -> AggregateFunction
+
+  /// Creates an aggregation that calculates the average (mean) of this numeric expression across
+  /// multiple stage inputs.
+  /// Assumes `self` evaluates to a numeric type.
+  ///
+  /// ```swift
+  /// // Calculate the average age of users
+  /// Field("age").avg().alias("averageAge")
+  /// ```
+  ///
+  /// - Returns: A new `AggregateFunction` representing the 'avg' aggregation.
+  func avg() -> AggregateFunction
+
+  /// Creates an aggregation that finds the minimum value of this expression across multiple stage
+  /// inputs.
+  ///
+  /// ```swift
+  /// // Find the lowest price of all products
+  /// Field("price").minimum().alias("lowestPrice")
+  /// ```
+  ///
+  /// - Returns: A new `AggregateFunction` representing the 'min' aggregation.
+  func minimum() -> AggregateFunction
+
+  /// Creates an aggregation that finds the maximum value of this expression across multiple stage
+  /// inputs.
+  ///
+  /// ```swift
+  /// // Find the highest score in a leaderboard
+  /// Field("score").maximum().alias("highestScore")
+  /// ```
+  ///
+  /// - Returns: A new `AggregateFunction` representing the 'max' aggregation.
+  func maximum() -> AggregateFunction
+
+  // MARK: Logical min/max
+
+  /// Creates an expression that returns the larger value between this expression and other
+  /// expressions, based on Firestore's value type ordering.
+  ///
+  /// ```swift
+  /// // Returns the largest of 'val1', 'val2', and 'val3' fields
+  /// Field("val1").logicalMaximum(Field("val2"), Field("val3"))
+  /// ```
+  ///
+  /// - Parameter second: The second `Expr` to compare with.
+  /// - Parameter others: Optional additional `Expr` values to compare with.
+  /// - Returns: A new `FunctionExpr` representing the logical max operation.
+  func logicalMaximum(_ second: Expr, _ others: Expr...) -> FunctionExpr
+
+  /// Creates an expression that returns the larger value between this expression and other literal
+  /// values, based on Firestore's value type ordering.
+  ///
+  /// ```swift
+  /// // Returns the largest of 'val1' (a field), 100, and 200.0
+  /// Field("val1").logicalMaximum(100, 200.0)
+  /// ```
+  ///
+  /// - Parameter second: The second literal `Sendable` value to compare with.
+  /// - Parameter others: Optional additional literal `Sendable` values to compare with.
+  /// - Returns: A new `FunctionExpr` representing the logical max operation.
+  func logicalMaximum(_ second: Sendable, _ others: Sendable...) -> FunctionExpr
+
+  /// Creates an expression that returns the smaller value between this expression and other
+  /// expressions, based on Firestore's value type ordering.
+  ///
+  /// ```swift
+  /// // Returns the smallest of 'val1', 'val2', and 'val3' fields
+  /// Field("val1").logicalMinimum(Field("val2"), Field("val3"))
+  /// ```
+  ///
+  /// - Parameter second: The second `Expr` to compare with.
+  /// - Parameter others: Optional additional `Expr` values to compare with.
+  /// - Returns: A new `FunctionExpr` representing the logical min operation.
+  func logicalMinimum(_ second: Expr, _ others: Expr...) -> FunctionExpr
+
+  /// Creates an expression that returns the smaller value between this expression and other literal
+  /// values, based on Firestore's value type ordering.
+  ///
+  /// ```swift
+  /// // Returns the smallest of 'val1' (a field), 0, and -5.5
+  /// Field("val1").logicalMinimum(0, -5.5)
+  /// ```
+  ///
+  /// - Parameter second: The second literal `Sendable` value to compare with.
+  /// - Parameter others: Optional additional literal `Sendable` values to compare with.
+  /// - Returns: A new `FunctionExpr` representing the logical min operation.
+  func logicalMinimum(_ second: Sendable, _ others: Sendable...) -> FunctionExpr
+
+  // MARK: Vector Operations
+
+  /// Creates an expression that calculates the length (number of dimensions) of this Firestore
+  /// Vector expression.
+  /// Assumes `self` evaluates to a Vector.
+  ///
+  /// ```swift
+  /// // Get the vector length (dimension) of the field 'embedding'.
+  /// Field("embedding").vectorLength()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the length of the vector.
+  func vectorLength() -> FunctionExpr
+
+  /// Calculates the cosine distance between this vector expression and another vector expression.
+  /// Assumes both `self` and `other` evaluate to Vectors.
+  ///
+  /// ```swift
+  /// // Cosine distance between 'userVector' field and 'itemVector' field
+  /// Field("userVector").cosineDistance(Field("itemVector"))
+  /// ```
+  ///
+  /// - Parameter other: The other vector as an `Expr` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the cosine distance.
+  func cosineDistance(_ other: Expr) -> FunctionExpr
+
+  /// Calculates the cosine distance between this vector expression and another vector literal
+  /// (`VectorValue`).
+  /// Assumes `self` evaluates to a Vector.
+  ///
+  /// ```swift
+  /// // Cosine distance with a VectorValue
+  /// let targetVector = VectorValue(vector: [0.1, 0.2, 0.3])
+  /// Field("docVector").cosineDistance(targetVector)
+  /// ```
+  /// - Parameter other: The other vector as a `VectorValue` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the cosine distance.
+  func cosineDistance(_ other: VectorValue) -> FunctionExpr
+
+  /// Calculates the cosine distance between this vector expression and another vector literal
+  /// (`[Double]`).
+  /// Assumes `self` evaluates to a Vector.
+  ///
+  /// ```swift
+  /// // Cosine distance between 'location' field and a target location
+  /// Field("location").cosineDistance([37.7749, -122.4194])
+  /// ```
+  /// - Parameter other: The other vector as `[Double]` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the cosine distance.
+  func cosineDistance(_ other: [Double]) -> FunctionExpr
+
+  /// Calculates the dot product between this vector expression and another vector expression.
+  /// Assumes both `self` and `other` evaluate to Vectors.
+  ///
+  /// ```swift
+  /// // Dot product between 'vectorA' and 'vectorB' fields
+  /// Field("vectorA").dotProduct(Field("vectorB"))
+  /// ```
+  ///
+  /// - Parameter other: The other vector as an `Expr` to calculate with.
+  /// - Returns: A new `FunctionExpr` representing the dot product.
+  func dotProduct(_ other: Expr) -> FunctionExpr
+
+  /// Calculates the dot product between this vector expression and another vector literal
+  /// (`VectorValue`).
+  /// Assumes `self` evaluates to a Vector.
+  ///
+  /// ```swift
+  /// // Dot product with a VectorValue
+  /// let weightVector = VectorValue(vector: [0.5, -0.5])
+  /// Field("features").dotProduct(weightVector)
+  /// ```
+  /// - Parameter other: The other vector as a `VectorValue` to calculate with.
+  /// - Returns: A new `FunctionExpr` representing the dot product.
+  func dotProduct(_ other: VectorValue) -> FunctionExpr
+
+  /// Calculates the dot product between this vector expression and another vector literal
+  /// (`[Double]`).
+  /// Assumes `self` evaluates to a Vector.
+  ///
+  /// ```swift
+  /// // Dot product between a feature vector and a target vector literal
+  /// Field("features").dotProduct([0.5, 0.8, 0.2])
+  /// ```
+  /// - Parameter other: The other vector as `[Double]` to calculate with.
+  /// - Returns: A new `FunctionExpr` representing the dot product.
+  func dotProduct(_ other: [Double]) -> FunctionExpr
+
+  /// Calculates the Euclidean distance between this vector expression and another vector
+  /// expression.
+  /// Assumes both `self` and `other` evaluate to Vectors.
+  ///
+  /// ```swift
+  /// // Euclidean distance between 'pointA' and 'pointB' fields
+  /// Field("pointA").euclideanDistance(Field("pointB"))
+  /// ```
+  ///
+  /// - Parameter other: The other vector as an `Expr` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the Euclidean distance.
+  func euclideanDistance(_ other: Expr) -> FunctionExpr
+
+  /// Calculates the Euclidean distance between this vector expression and another vector literal
+  /// (`VectorValue`).
+  /// Assumes `self` evaluates to a Vector.
+  ///
+  /// ```swift
+  /// let targetPoint = VectorValue(vector: [1.0, 2.0])
+  /// Field("currentLocation").euclideanDistance(targetPoint)
+  /// ```
+  /// - Parameter other: The other vector as a `VectorValue` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the Euclidean distance.
+  func euclideanDistance(_ other: VectorValue) -> FunctionExpr
+
+  /// Calculates the Euclidean distance between this vector expression and another vector literal
+  /// (`[Double]`).
+  /// Assumes `self` evaluates to a Vector.
+  ///
+  /// ```swift
+  /// // Euclidean distance between 'location' field and a target location literal
+  /// Field("location").euclideanDistance([37.7749, -122.4194])
+  /// ```
+  /// - Parameter other: The other vector as `[Double]` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the Euclidean distance.
+  func euclideanDistance(_ other: [Double]) -> FunctionExpr
+
+  /// Calculates the Manhattan (L1) distance between this vector expression and another vector
+  /// expression.
+  /// Assumes both `self` and `other` evaluate to Vectors.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Manhattan distance between 'vector1' field and 'vector2' field
+  /// Field("vector1").manhattanDistance(Field("vector2"))
+  /// ```
+  ///
+  /// - Parameter other: The other vector as an `Expr` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the Manhattan distance.
+  func manhattanDistance(_ other: Expr) -> FunctionExpr
+
+  /// Calculates the Manhattan (L1) distance between this vector expression and another vector
+  /// literal (`VectorValue`).
+  /// Assumes `self` evaluates to a Vector.
+  /// - Note: This API is in beta.
+  /// ```swift
+  /// let referencePoint = VectorValue(vector: [5.0, 10.0])
+  /// Field("dataPoint").manhattanDistance(referencePoint)
+  /// ```
+  /// - Parameter other: The other vector as a `VectorValue` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the Manhattan distance.
+  func manhattanDistance(_ other: VectorValue) -> FunctionExpr
+
+  /// Calculates the Manhattan (L1) distance between this vector expression and another vector
+  /// literal (`[Double]`).
+  /// Assumes `self` evaluates to a Vector.
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Manhattan distance between 'point' field and a target point
+  /// Field("point").manhattanDistance([10.0, 20.0])
+  /// ```
+  /// - Parameter other: The other vector as `[Double]` to compare against.
+  /// - Returns: A new `FunctionExpr` representing the Manhattan distance.
+  func manhattanDistance(_ other: [Double]) -> FunctionExpr
+
+  // MARK: Timestamp operations
+
+  /// Creates an expression that interprets this expression (evaluating to a number) as microseconds
+  /// since the Unix epoch and returns a timestamp.
+  /// Assumes `self` evaluates to a number.
+  ///
+  /// ```swift
+  /// // Interpret 'microseconds' field as microseconds since epoch.
+  /// Field("microseconds").unixMicrosToTimestamp()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the timestamp.
+  func unixMicrosToTimestamp() -> FunctionExpr
+
+  /// Creates an expression that converts this timestamp expression to the number of microseconds
+  /// since the Unix epoch. Assumes `self` evaluates to a Timestamp.
+  ///
+  /// ```swift
+  /// // Convert 'timestamp' field to microseconds since epoch.
+  /// Field("timestamp").timestampToUnixMicros()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the number of microseconds.
+  func timestampToUnixMicros() -> FunctionExpr
+
+  /// Creates an expression that interprets this expression (evaluating to a number) as milliseconds
+  /// since the Unix epoch and returns a timestamp.
+  /// Assumes `self` evaluates to a number.
+  ///
+  /// ```swift
+  /// // Interpret 'milliseconds' field as milliseconds since epoch.
+  /// Field("milliseconds").unixMillisToTimestamp()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the timestamp.
+  func unixMillisToTimestamp() -> FunctionExpr
+
+  /// Creates an expression that converts this timestamp expression to the number of milliseconds
+  /// since the Unix epoch. Assumes `self` evaluates to a Timestamp.
+  ///
+  /// ```swift
+  /// // Convert 'timestamp' field to milliseconds since epoch.
+  /// Field("timestamp").timestampToUnixMillis()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the number of milliseconds.
+  func timestampToUnixMillis() -> FunctionExpr
+
+  /// Creates an expression that interprets this expression (evaluating to a number) as seconds
+  /// since the Unix epoch and returns a timestamp.
+  /// Assumes `self` evaluates to a number.
+  ///
+  /// ```swift
+  /// // Interpret 'seconds' field as seconds since epoch.
+  /// Field("seconds").unixSecondsToTimestamp()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the timestamp.
+  func unixSecondsToTimestamp() -> FunctionExpr
+
+  /// Creates an expression that converts this timestamp expression to the number of seconds
+  /// since the Unix epoch. Assumes `self` evaluates to a Timestamp.
+  ///
+  /// ```swift
+  /// // Convert 'timestamp' field to seconds since epoch.
+  /// Field("timestamp").timestampToUnixSeconds()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the number of seconds.
+  func timestampToUnixSeconds() -> FunctionExpr
+
+  /// Creates an expression that adds a specified amount of time to this timestamp expression,
+  /// where unit and amount are provided as expressions.
+  /// Assumes `self` evaluates to a Timestamp, `unit` evaluates to a unit string, and `amount`
+  /// evaluates to an integer.
+  ///
+  /// ```swift
+  /// // Add duration from 'unitField'/'amountField' to 'timestamp'
+  /// Field("timestamp").timestampAdd(Field("unitField"), Field("amountField"))
+  /// ```
+  ///
+  /// - Parameter unit: An `Expr` evaluating to the unit of time string (e.g., "day", "hour").
+  ///                 Valid units are 'microsecond', 'millisecond', 'second', 'minute', 'hour',
+  /// 'day'.
+  /// - Parameter amount: An `Expr` evaluating to the amount (Int) of the unit to add.
+  /// - Returns: A new `FunctionExpr` representing the resulting timestamp.
+  func timestampAdd(_ unit: Expr, _ amount: Expr) -> FunctionExpr
+
+  /// Creates an expression that adds a specified amount of time to this timestamp expression,
+  /// where unit and amount are provided as literals.
+  /// Assumes `self` evaluates to a Timestamp.
+  ///
+  /// ```swift
+  /// // Add 1 day to the 'timestamp' field.
+  /// Field("timestamp").timestampAdd(.day, 1)
+  /// ```
+  ///
+  /// - Parameter unit: The `TimeUnit` enum representing the unit of time.
+  /// - Parameter amount: The literal `Int` amount of the unit to add.
+  /// - Returns: A new `FunctionExpr` representing the resulting timestamp.
+  func timestampAdd(_ unit: TimeUnit, _ amount: Int) -> FunctionExpr
+
+  /// Creates an expression that subtracts a specified amount of time from this timestamp
+  /// expression,
+  /// where unit and amount are provided as expressions.
+  /// Assumes `self` evaluates to a Timestamp, `unit` evaluates to a unit string, and `amount`
+  /// evaluates to an integer.
+  ///
+  /// ```swift
+  /// // Subtract duration from 'unitField'/'amountField' from 'timestamp'
+  /// Field("timestamp").timestampSub(Field("unitField"), Field("amountField"))
+  /// ```
+  ///
+  /// - Parameter unit: An `Expr` evaluating to the unit of time string (e.g., "day", "hour").
+  ///                 Valid units are 'microsecond', 'millisecond', 'second', 'minute', 'hour',
+  /// 'day'.
+  /// - Parameter amount: An `Expr` evaluating to the amount (Int) of the unit to subtract.
+  /// - Returns: A new `FunctionExpr` representing the resulting timestamp.
+  func timestampSub(_ unit: Expr, _ amount: Expr) -> FunctionExpr
+
+  /// Creates an expression that subtracts a specified amount of time from this timestamp
+  /// expression,
+  /// where unit and amount are provided as literals.
+  /// Assumes `self` evaluates to a Timestamp.
+  ///
+  /// ```swift
+  /// // Subtract 1 day from the 'timestamp' field.
+  /// Field("timestamp").timestampSub(.day, 1)
+  /// ```
+  ///
+  /// - Parameter unit: The `TimeUnit` enum representing the unit of time.
+  /// - Parameter amount: The literal `Int` amount of the unit to subtract.
+  /// - Returns: A new `FunctionExpr` representing the resulting timestamp.
+  func timestampSub(_ unit: TimeUnit, _ amount: Int) -> FunctionExpr
+
+  // MARK: - Bitwise operations
+
+  /// Creates an expression applying bitwise AND between this expression and an integer literal.
+  /// Assumes `self` evaluates to an Integer or Bytes.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Bitwise AND of 'flags' field and 0xFF
+  /// Field("flags").bitAnd(0xFF)
+  /// ```
+  ///
+  /// - Parameter otherBits: The integer literal operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise AND operation.
+  func bitAnd(_ otherBits: Int) -> FunctionExpr
+
+  /// Creates an expression applying bitwise AND between this expression and a UInt8 literal (often
+  /// for byte masks).
+  /// Assumes `self` evaluates to an Integer or Bytes.
+  /// - Note: This API is in beta.
+  /// ```swift
+  /// // Bitwise AND of 'byteFlags' field and a byte mask
+  /// Field("byteFlags").bitAnd(0b00001111 as UInt8)
+  /// ```
+  /// - Parameter otherBits: The UInt8 literal operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise AND operation.
+  func bitAnd(_ otherBits: UInt8) -> FunctionExpr
+
+  /// Creates an expression applying bitwise AND between this expression and another expression.
+  /// Assumes `self` and `bitsExpression` evaluate to Integer or Bytes.
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Bitwise AND of 'mask1' and 'mask2' fields
+  /// Field("mask1").bitAnd(Field("mask2"))
+  /// ```
+  /// - Parameter bitsExpression: The other `Expr` operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise AND operation.
+  func bitAnd(_ bitsExpression: Expr) -> FunctionExpr
+
+  /// Creates an expression applying bitwise OR between this expression and an integer literal.
+  /// Assumes `self` evaluates to an Integer or Bytes.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Bitwise OR of 'flags' field and 0x01
+  /// Field("flags").bitOr(0x01)
+  /// ```
+  ///
+  /// - Parameter otherBits: The integer literal operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise OR operation.
+  func bitOr(_ otherBits: Int) -> FunctionExpr
+
+  /// Creates an expression applying bitwise OR between this expression and a UInt8 literal.
+  /// Assumes `self` evaluates to an Integer or Bytes.
+  /// - Note: This API is in beta.
+  /// ```swift
+  /// // Set specific bits in 'controlByte'
+  /// Field("controlByte").bitOr(0b10000001 as UInt8)
+  /// ```
+  /// - Parameter otherBits: The UInt8 literal operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise OR operation.
+  func bitOr(_ otherBits: UInt8) -> FunctionExpr
+
+  /// Creates an expression applying bitwise OR between this expression and another expression.
+  /// Assumes `self` and `bitsExpression` evaluate to Integer or Bytes.
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Bitwise OR of 'permissionSet1' and 'permissionSet2' fields
+  /// Field("permissionSet1").bitOr(Field("permissionSet2"))
+  /// ```
+  /// - Parameter bitsExpression: The other `Expr` operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise OR operation.
+  func bitOr(_ bitsExpression: Expr) -> FunctionExpr
+
+  /// Creates an expression applying bitwise XOR between this expression and an integer literal.
+  /// Assumes `self` evaluates to an Integer or Bytes.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Bitwise XOR of 'toggle' field and 0xFFFF
+  /// Field("toggle").bitXor(0xFFFF)
+  /// ```
+  ///
+  /// - Parameter otherBits: The integer literal operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise XOR operation.
+  func bitXor(_ otherBits: Int) -> FunctionExpr
+
+  /// Creates an expression applying bitwise XOR between this expression and a UInt8 literal.
+  /// Assumes `self` evaluates to an Integer or Bytes.
+  /// - Note: This API is in beta.
+  /// ```swift
+  /// // Toggle bits in 'statusByte' using a XOR mask
+  /// Field("statusByte").bitXor(0b01010101 as UInt8)
+  /// ```
+  /// - Parameter otherBits: The UInt8 literal operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise XOR operation.
+  func bitXor(_ otherBits: UInt8) -> FunctionExpr
+
+  /// Creates an expression applying bitwise XOR between this expression and another expression.
+  /// Assumes `self` and `bitsExpression` evaluate to Integer or Bytes.
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Bitwise XOR of 'key1' and 'key2' fields (assuming Bytes)
+  /// Field("key1").bitXor(Field("key2"))
+  /// ```
+  /// - Parameter bitsExpression: The other `Expr` operand.
+  /// - Returns: A new `FunctionExpr` representing the bitwise XOR operation.
+  func bitXor(_ bitsExpression: Expr) -> FunctionExpr
+
+  /// Creates an expression applying bitwise NOT to this expression.
+  /// Assumes `self` evaluates to an Integer or Bytes.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Bitwise NOT of 'mask' field
+  /// Field("mask").bitNot()
+  /// ```
+  ///
+  /// - Returns: A new `FunctionExpr` representing the bitwise NOT operation.
+  func bitNot() -> FunctionExpr
+
+  /// Creates an expression applying bitwise left shift to this expression by a literal number of
+  /// bits.
+  /// Assumes `self` evaluates to Integer or Bytes.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Left shift 'value' field by 2 bits
+  /// Field("value").bitLeftShift(2)
+  /// ```
+  ///
+  /// - Parameter y: The number of bits (Int literal) to shift by.
+  /// - Returns: A new `FunctionExpr` representing the bitwise left shift operation.
+  func bitLeftShift(_ y: Int) -> FunctionExpr
+
+  /// Creates an expression applying bitwise left shift to this expression by a number of bits
+  /// specified by an expression.
+  /// Assumes `self` evaluates to Integer or Bytes, and `numberExpr` evaluates to an Integer.
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Left shift 'data' by number of bits in 'shiftCount' field
+  /// Field("data").bitLeftShift(Field("shiftCount"))
+  /// ```
+  /// - Parameter numberExpr: An `Expr` (evaluating to an Int) for the number of bits to shift by.
+  /// - Returns: A new `FunctionExpr` representing the bitwise left shift operation.
+  func bitLeftShift(_ numberExpr: Expr) -> FunctionExpr
+
+  /// Creates an expression applying bitwise right shift to this expression by a literal number of
+  /// bits.
+  /// Assumes `self` evaluates to Integer or Bytes.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Right shift 'value' field by 4 bits
+  /// Field("value").bitRightShift(4)
+  /// ```
+  ///
+  /// - Parameter y: The number of bits (Int literal) to shift by.
+  /// - Returns: A new `FunctionExpr` representing the bitwise right shift operation.
+  func bitRightShift(_ y: Int) -> FunctionExpr
+
+  /// Creates an expression applying bitwise right shift to this expression by a number of bits
+  /// specified by an expression.
+  /// Assumes `self` evaluates to Integer or Bytes, and `numberExpr` evaluates to an Integer.
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Right shift 'data' by number of bits in 'shiftCount' field
+  /// Field("data").bitRightShift(Field("shiftCount"))
+  /// ```
+  /// - Parameter numberExpr: An `Expr` (evaluating to an Int) for the number of bits to shift by.
+  /// - Returns: A new `FunctionExpr` representing the bitwise right shift operation.
+  func bitRightShift(_ numberExpr: Expr) -> FunctionExpr
+
+  /// Creates an expression that returns the result of `catchExpr` if this expression produces an
+  /// error during evaluation,
+  /// otherwise returns the result of this expression.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Try dividing 'a' by 'b', return field 'fallbackValue' on error (e.g., division by zero)
+  /// Field("a").divide(Field("b")).ifError(Field("fallbackValue"))
+  /// ```
+  ///
+  /// - Parameter catchExpr: The `Expr` to evaluate and return if this expression errors.
+  /// - Returns: A new `FunctionExpr` representing the 'ifError' operation.
+  func ifError(_ catchExpr: Expr) -> FunctionExpr
+
+  /// Creates an expression that returns the literal `catchValue` if this expression produces an
+  /// error during evaluation,
+  /// otherwise returns the result of this expression.
+  ///
+  /// - Note: This API is in beta.
+  ///
+  /// ```swift
+  /// // Get first item in 'title' array, or return "Default Title" if error (e.g., empty array)
+  /// Field("title").arrayGet(0).ifError("Default Title")
+  /// ```
+  ///
+  /// - Parameter catchValue: The literal `Sendable` value to return if this expression errors.
+  /// - Returns: A new `FunctionExpr` representing the 'ifError' operation.
+  func ifError(_ catchValue: Sendable) -> FunctionExpr
+
+  // MARK: Sorting
+
+  /// Creates an `Ordering` object that sorts documents in ascending order based on this expression.
+  ///
+  /// ```swift
+  /// // Sort documents by the 'name' field in ascending order
+  /// firestore.pipeline().collection("users")
+  ///   .sort(Field("name").ascending())
+  /// ```
+  ///
+  /// - Returns: A new `Ordering` instance for ascending sorting.
+  func ascending() -> Ordering
+
+  /// Creates an `Ordering` object that sorts documents in descending order based on this
+  /// expression.
+  ///
+  /// ```swift
+  /// // Sort documents by the 'createdAt' field in descending order
+  /// firestore.pipeline().collection("users")
+  ///   .sort(Field("createdAt").descending())
+  /// ```
+  ///
+  /// - Returns: A new `Ordering` instance for descending sorting.
+  func descending() -> Ordering
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/ArrayExpression.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/ArrayExpression.swift
new file mode 100644
index 00000000000..e1f5d749c5f
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/ArrayExpression.swift
@@ -0,0 +1,24 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class ArrayExpression: FunctionExpr, @unchecked Sendable {
+  var result: [Expr] = []
+  public init(_ elements: [Sendable]) {
+    for element in elements {
+      result.append(Helper.sendableToExpr(element))
+    }
+
+    super.init("array", result)
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/Constant.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/Constant.swift
new file mode 100644
index 00000000000..8f6b3709892
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/Constant.swift
@@ -0,0 +1,87 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+
+public struct Constant: Expr, BridgeWrapper, @unchecked Sendable {
+  let bridge: ExprBridge
+
+  let value: Any?
+
+  // Initializer for optional values (including nil)
+  init(_ value: Any?) {
+    self.value = value
+    if value == nil {
+      bridge = ConstantBridge(NSNull())
+    } else {
+      bridge = ConstantBridge(value!)
+    }
+  }
+
+  // Initializer for integer
+  public init(_ value: Int) {
+    self.init(value as Any)
+  }
+
+  // Initializer for double
+  public init(_ value: Double) {
+    self.init(value as Any)
+  }
+
+  // Initializer for strings
+  public init(_ value: String) {
+    self.init(value as Any)
+  }
+
+  // Initializer for boolean values
+  public init(_ value: Bool) {
+    self.init(value as Any)
+  }
+
+  // Initializer for Bytes
+  public init(_ value: Data) {
+    self.init(value as Any)
+  }
+
+  // Initializer for GeoPoint values
+  public init(_ value: GeoPoint) {
+    self.init(value as Any)
+  }
+
+  // Initializer for Timestamp values
+  public init(_ value: Timestamp) {
+    self.init(value as Any)
+  }
+
+  // Initializer for Date values
+  public init(_ value: Date) {
+    self.init(value as Any)
+  }
+
+  // Initializer for DocumentReference
+  public init(_ value: DocumentReference) {
+    self.init(value as Any)
+  }
+
+  // Initializer for vector values
+  public init(_ value: VectorValue) {
+    self.init(value as Any)
+  }
+
+  public static let `nil` = Constant(nil)
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/DocumentId.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/DocumentId.swift
new file mode 100644
index 00000000000..70c621d8cbd
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/DocumentId.swift
@@ -0,0 +1,19 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class DocumentId: Field, @unchecked Sendable {
+  public init() {
+    super.init("__name__")
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/Field.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/Field.swift
new file mode 100644
index 00000000000..99dc7e1b21d
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/Field.swift
@@ -0,0 +1,40 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class Field: ExprBridge, Expr, Selectable, BridgeWrapper, SelectableWrapper,
+  @unchecked Sendable {
+  let bridge: ExprBridge
+
+  var alias: String
+
+  var expr: Expr {
+    return self
+  }
+
+  public let fieldName: String
+
+  public init(_ name: String) {
+    let fieldBridge = FieldBridge(name: name)
+    bridge = fieldBridge
+    fieldName = fieldBridge.field_name()
+    alias = fieldName
+  }
+
+  public init(_ path: FieldPath) {
+    let fieldBridge = FieldBridge(path: path)
+    bridge = fieldBridge
+    fieldName = fieldBridge.field_name()
+    alias = fieldName
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr.swift
new file mode 100644
index 00000000000..533f6a5ef51
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr.swift
@@ -0,0 +1,30 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class FunctionExpr: Expr, BridgeWrapper, @unchecked Sendable {
+  let bridge: ExprBridge
+
+  let functionName: String
+  let agrs: [Expr]
+
+  public init(_ functionName: String, _ agrs: [Expr]) {
+    self.functionName = functionName
+    self.agrs = agrs
+    bridge = FunctionExprBridge(
+      name: functionName,
+      args: self.agrs.map { $0.toBridge()
+      }
+    )
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr/BooleanExpr.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr/BooleanExpr.swift
new file mode 100644
index 00000000000..701276d51f7
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr/BooleanExpr.swift
@@ -0,0 +1,46 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class BooleanExpr: FunctionExpr, @unchecked Sendable {
+  override public init(_ functionName: String, _ agrs: [Expr]) {
+    super.init(functionName, agrs)
+  }
+
+  public func countIf() -> AggregateFunction {
+    return AggregateFunction("count_if", [self])
+  }
+
+  public func then(_ thenExpr: Expr, else elseExpr: Expr) -> FunctionExpr {
+    return FunctionExpr("cond", [self, thenExpr, elseExpr])
+  }
+
+  public static func && (lhs: BooleanExpr,
+                         rhs: @autoclosure () throws -> BooleanExpr) rethrows -> BooleanExpr {
+    try BooleanExpr("and", [lhs, rhs()])
+  }
+
+  public static func || (lhs: BooleanExpr,
+                         rhs: @autoclosure () throws -> BooleanExpr) rethrows -> BooleanExpr {
+    try BooleanExpr("or", [lhs, rhs()])
+  }
+
+  public static func ^ (lhs: BooleanExpr,
+                        rhs: @autoclosure () throws -> BooleanExpr) rethrows -> BooleanExpr {
+    try BooleanExpr("xor", [lhs, rhs()])
+  }
+
+  public static prefix func ! (lhs: BooleanExpr) -> BooleanExpr {
+    return BooleanExpr("not", [lhs])
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr/RandomExpr.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr/RandomExpr.swift
new file mode 100644
index 00000000000..5ea39db81fc
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/FunctionExpr/RandomExpr.swift
@@ -0,0 +1,19 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class RandomExpr: FunctionExpr, @unchecked Sendable {
+  public init() {
+    super.init("rand", [])
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/MapExpression.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/MapExpression.swift
new file mode 100644
index 00000000000..93d9bb4859b
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Expr/MapExpression.swift
@@ -0,0 +1,25 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public class MapExpression: FunctionExpr, @unchecked Sendable {
+  var result: [Expr] = []
+  public init(_ elements: [String: Sendable]) {
+    for element in elements {
+      result.append(Constant(element.key))
+      result.append(Helper.sendableToExpr(element.value))
+    }
+
+    super.init("map", result)
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/ExprWithAlias.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/ExprWithAlias.swift
new file mode 100644
index 00000000000..247427f2fd8
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/ExprWithAlias.swift
@@ -0,0 +1,24 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public struct ExprWithAlias: Selectable, SelectableWrapper, Sendable {
+  public var alias: String
+
+  public var expr: Expr
+
+  init(_ expr: Expr, _ alias: String) {
+    self.alias = alias
+    self.expr = expr
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Ordering.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Ordering.swift
new file mode 100644
index 00000000000..9659e95e682
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Ordering.swift
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+public class Ordering: @unchecked Sendable {
+  let expr: Expr
+  let direction: Direction
+  let bridge: OrderingBridge
+
+  init(expr: Expr, direction: Direction) {
+    self.expr = expr
+    self.direction = direction
+    bridge = OrderingBridge(expr: expr.toBridge(), direction: direction.rawValue)
+  }
+}
+
+public struct Direction: Sendable, Equatable, Hashable {
+  let kind: Kind
+  let rawValue: String
+
+  enum Kind: String {
+    case ascending
+    case descending
+  }
+
+  public static var ascending: Direction {
+    return self.init(kind: .ascending, rawValue: "ascending")
+  }
+
+  public static var descending: Direction {
+    return self.init(kind: .descending, rawValue: "descending")
+  }
+
+  init(kind: Kind, rawValue: String) {
+    self.kind = kind
+    self.rawValue = rawValue
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Pipeline.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Pipeline.swift
new file mode 100644
index 00000000000..6c2a6e34053
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Pipeline.swift
@@ -0,0 +1,729 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+import Foundation
+
+/// The `Pipeline` class provides a flexible and expressive framework for building complex data
+/// transformation and query pipelines for Firestore.
+///
+/// A pipeline takes data sources, such as Firestore collections or collection groups, and applies
+/// a series of stages that are chained together. Each stage takes the output from the previous
+/// stage
+/// (or the data source) and produces an output for the next stage (or as the final output of the
+/// pipeline).
+///
+/// Expressions can be used within each stage to filter and transform data through the stage.
+///
+/// NOTE: The chained stages do not prescribe exactly how Firestore will execute the pipeline.
+/// Instead, Firestore only guarantees that the result is the same as if the chained stages were
+/// executed in order.
+///
+/// ## Usage Examples
+///
+/// The following examples assume you have a `Firestore` instance named `db`.
+///
+/// ```swift
+/// import FirebaseFirestore
+///
+/// // Example 1: Select specific fields and rename 'rating' to 'bookRating'.
+/// // Assumes `Field("rating").as("bookRating")` is a valid `Selectable` expression.
+/// do {
+/// let results1 = try await db.pipeline().collection("books")
+/// .select(Field("title"), Field("author"), Field("rating").as("bookRating"))
+/// .execute()
+/// print("Results 1: \(results1.documents)")
+/// } catch {
+/// print("Error in example 1: \(error)")
+/// }
+///
+/// // Example 2: Filter documents where 'genre' is "Science Fiction" and 'published' is after 1950.
+/// // Assumes `Function.eq`, `Function.gt`, and `Function.and` create `BooleanExpr`.
+/// do {
+/// let results2 = try await db.pipeline().collection("books")
+/// .where(Function.and(
+/// Function.eq(Field("genre"), "Science Fiction"),
+/// Function.gt(Field("published"), 1950)
+/// ))
+/// .execute()
+/// print("Results 2: \(results2.documents)")
+/// } catch {
+/// print("Error in example 2: \(error)")
+/// }
+///
+/// // Example 3: Calculate the average rating of books published after 1980.
+/// // Assumes `avg()` creates an `Accumulator` and `AggregateWithAlias` is used correctly.
+/// do {
+/// let results3 = try await db.pipeline().collection("books")
+/// .where(Function.gt(Field("published"), 1980))
+/// .aggregate(AggregateWithas(avg(Field("rating")), alias: "averageRating"))
+/// .execute()
+/// print("Results 3: \(results3.documents)")
+/// } catch {
+/// print("Error in example 3: \(error)")
+/// }
+/// ```
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+public struct Pipeline: @unchecked Sendable {
+  private var stages: [Stage]
+  let bridge: PipelineBridge
+  let db: Firestore
+
+  init(stages: [Stage], db: Firestore) {
+    self.stages = stages
+    self.db = db
+    bridge = PipelineBridge(stages: stages.map { $0.bridge }, db: db)
+  }
+
+  /// Executes the defined pipeline and returns a `PipelineSnapshot` containing the results.
+  ///
+  /// This method asynchronously sends the pipeline definition to Firestore for execution.
+  /// The resulting documents, transformed and filtered by the pipeline stages, are returned
+  /// within a `PipelineSnapshot`.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume a pipeline is already configured.
+  /// do {
+  ///   let snapshot = try await pipeline.execute()
+  ///   // Process snapshot.documents
+  ///   print("Pipeline executed successfully: \(snapshot.documents)")
+  /// } catch {
+  ///   print("Pipeline execution failed: \(error)")
+  /// }
+  /// ```
+  ///
+  /// - Throws: An error if the pipeline execution fails on the backend.
+  /// - Returns: A `PipelineSnapshot` containing the result of the pipeline execution.
+  public func execute() async throws -> PipelineSnapshot {
+    return try await withCheckedThrowingContinuation { continuation in
+      self.bridge.execute { result, error in
+        if let error {
+          continuation.resume(throwing: error)
+        } else {
+          continuation.resume(returning: PipelineSnapshot(result!, pipeline: self))
+        }
+      }
+    }
+  }
+
+  /// Adds new fields to outputs from previous stages.
+  ///
+  /// This stage allows you to compute values on-the-fly based on existing data from previous
+  /// stages or constants. You can use this to create new fields or overwrite existing ones
+  /// (if there is a name overlap).
+  ///
+  /// The added fields are defined using `Selectable`s, which can be:
+  /// - `Field`: References an existing document field.
+  /// - `Function`: Performs a calculation using functions like `Function.add` or
+  /// `Function.multiply`,
+  ///   typically with an assigned alias (e.g., `Function.multiply(Field("price"),
+  /// 1.1).as("priceWithTax")`).
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline from a collection.
+  /// let updatedPipeline = pipeline.addFields(
+  ///   Field("rating").as("bookRating"), // Rename 'rating' to 'bookRating'.
+  ///   Function.add(5, Field("quantity")).as("totalQuantityPlusFive") // Calculate
+  /// 'totalQuantityPlusFive'.
+  /// )
+  /// // let results = try await updatedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter field: The first field to add to the documents, specified as a `Selectable`.
+  /// - Parameter additionalFields: Optional additional fields to add, specified as `Selectable`s.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func addFields(_ field: Selectable, _ additionalFields: Selectable...) -> Pipeline {
+    let fields = [field] + additionalFields
+    return Pipeline(stages: stages + [AddFields(fields: fields)], db: db)
+  }
+
+  /// Removes fields from outputs of previous stages.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// let updatedPipeline = pipeline.removeFields(Field("confidentialData"), Field("internalNotes"))
+  /// // let results = try await updatedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter field: The first field to remove, specified as a `Field` instance.
+  /// - Parameter additionalFields: Optional additional fields to remove.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func removeFields(_ field: Field, _ additionalFields: Field...) -> Pipeline {
+    return Pipeline(
+      stages: stages + [RemoveFieldsStage(fields: [field] + additionalFields)],
+      db: db
+    )
+  }
+
+  /// Removes fields from outputs of previous stages using field names.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// // Removes fields 'rating' and 'cost' from the previous stage outputs.
+  /// let updatedPipeline = pipeline.removeFields("rating", "cost")
+  /// // let results = try await updatedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter field: The name of the first field to remove.
+  /// - Parameter additionalFields: Optional additional field names to remove.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func removeFields(_ field: String, _ additionalFields: String...) -> Pipeline {
+    return Pipeline(
+      stages: stages + [RemoveFieldsStage(fields: [field] + additionalFields)],
+      db: db
+    )
+  }
+
+  /// Selects or creates a set of fields from the outputs of previous stages.
+  ///
+  /// The selected fields are defined using `Selectable` expressions, which can be:
+  /// - `String`: Name of an existing field (implicitly converted to `Field`).
+  /// - `Field`: References an existing field.
+  /// - `Function`: Represents the result of a function with an assigned alias
+  ///   (e.g., `Function.toUppercase(Field("address")).as("upperAddress")`).
+  ///
+  /// If no selections are provided, the output of this stage is typically empty.
+  /// Use `addFields` if only additions are desired without replacing the existing document
+  /// structure.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// let projectedPipeline = pipeline.select(
+  ///   Field("firstName"),
+  ///   Field("lastName"),
+  ///   Function.toUppercase(Field("address")).as("upperAddress")
+  /// )
+  /// // let results = try await projectedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter selection: The first field to include in the output documents, specified as a
+  /// `Selectable`.
+  /// - Parameter additionalSelections: Optional additional fields to include, specified as
+  /// `Selectable`s.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func select(_ selection: Selectable, _ additionalSelections: Selectable...) -> Pipeline {
+    let selections = [selection] + additionalSelections
+    return Pipeline(
+      stages: stages + [Select(selections: selections)],
+      db: db
+    )
+  }
+
+  /// Selects a set of fields from the outputs of previous stages using field names.
+  ///
+  /// The selected fields are specified by their names. If no selections are provided,
+  /// the output of this stage is typically empty. Use `addFields` if only additions are desired.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// let projectedPipeline = pipeline.select("title", "author", "yearPublished")
+  /// // let results = try await projectedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter selection: The name of the first field to include in the output documents.
+  /// - Parameter additionalSelections: Optional additional field names to include.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func select(_ selection: String, _ additionalSelections: String...) -> Pipeline {
+    let selections = ([selection] + additionalSelections).map { Field($0) }
+    return Pipeline(
+      stages: stages + [Select(selections: selections)],
+      db: db
+    )
+  }
+
+  public func select(_ selections: [Selectable]) -> Pipeline {
+    return Pipeline(
+      stages: stages + [Select(selections: selections)],
+      db: db
+    )
+  }
+
+  /// Filters documents from previous stages, including only those matching the specified
+  /// `BooleanExpr`.
+  ///
+  /// This stage applies conditions similar to a "WHERE" clause in SQL.
+  /// Filter documents based on field values using `BooleanExpr` implementations, such as:
+  /// - Field comparators: `Function.eq`, `Function.lt` (less than), `Function.gt` (greater than).
+  /// - Logical operators: `Function.and`, `Function.or`, `Function.not`.
+  /// - Advanced functions: `Function.regexMatch`, `Function.arrayContains`.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// let filteredPipeline = pipeline.where(
+  ///     Field("rating").gt(4.0)   // Rating greater than 4.0.
+  ///     && Field("genre").eq("Science Fiction") // Genre is "Science Fiction".
+  /// )
+  /// // let results = try await filteredPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter condition: The `BooleanExpr` to apply.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func `where`(_ condition: BooleanExpr) -> Pipeline {
+    return Pipeline(stages: stages + [Where(condition: condition)], db: db)
+  }
+
+  /// Skips the first `offset` number of documents from the results of previous stages.
+  ///
+  /// A negative input number might count back from the end of the result set,
+  /// depending on backend behavior. This stage is useful for pagination,
+  /// typically used with `limit` to control page size.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline, possibly sorted.
+  /// // Retrieve the second page of 20 results (skip first 20, limit to next 20).
+  /// let pagedPipeline = pipeline
+  ///                     .sort(Ascending("published")) // Example sort.
+  ///                     .offset(20)  // Skip the first 20 results.
+  ///                     .limit(20)   // Take the next 20 results.
+  /// // let results = try await pagedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter offset: The number of documents to skip (a `Int32` value).
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func offset(_ offset: Int32) -> Pipeline {
+    return Pipeline(stages: stages + [Offset(offset)], db: db)
+  }
+
+  /// Limits the maximum number of documents returned by previous stages to `limit`.
+  ///
+  /// A negative input number might count back from the end of the result set,
+  /// depending on backend behavior. This stage helps retrieve a controlled subset of data.
+  /// It's often used for:
+  /// - **Pagination:** With `offset` to retrieve specific pages.
+  /// - **Limiting Data Retrieval:** To improve performance with large collections.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// // Limit results to the top 10 highest-rated books.
+  /// let topTenPipeline = pipeline
+  ///                      .sort(Descending(Field("rating")))
+  ///                      .limit(10)
+  /// // let results = try await topTenPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter limit: The maximum number of documents to return (a `Int32` value).
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func limit(_ limit: Int32) -> Pipeline {
+    return Pipeline(stages: stages + [Limit(limit)], db: db)
+  }
+
+  /// Returns a set of distinct documents based on specified grouping field names.
+  ///
+  /// This stage ensures that only unique combinations of values for the specified
+  /// group fields are included from the previous stage's output.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// // Get a list of unique author and genre combinations.
+  /// let distinctAuthorsGenresPipeline = pipeline.distinct("author", "genre")
+  /// // To further select only the author:
+  /// //   .select("author")
+  /// // let results = try await distinctAuthorsGenresPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter group: The name of the first field for distinct value combinations.
+  /// - Parameter additionalGroups: Optional additional field names.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func distinct(_ group: String, _ additionalGroups: String...) -> Pipeline {
+    let selections = ([group] + additionalGroups).map { Field($0) }
+    return Pipeline(stages: stages + [Distinct(groups: selections)], db: db)
+  }
+
+  /// Returns a set of distinct documents based on specified `Selectable` expressions.
+  ///
+  /// This stage ensures unique combinations of values from evaluated `Selectable`
+  /// expressions (e.g., `Field` or `Function` results).
+  ///
+  /// `Selectable` expressions can be:
+  /// - `Field`: A reference to an existing document field.
+  /// - `Function`: The result of a function with an alias (e.g.,
+  /// `Function.toUppercase(Field("author")).as("authorName")`).
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// // Get unique uppercase author names and genre combinations.
+  /// let distinctPipeline = pipeline.distinct(
+  ///   Field("author").uppercased().as("authorName"),
+  ///   Field("genre")
+  /// )
+  /// // To select only the transformed author name:
+  /// //   .select(Field("authorName"))
+  /// // let results = try await distinctPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter group: The first `Selectable` expression to consider.
+  /// - Parameter additionalGroups: Optional additional `Selectable` expressions.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func distinct(_ group: Selectable, _ additionalGroups: Selectable...) -> Pipeline {
+    let groups = [group] + additionalGroups
+    return Pipeline(stages: stages + [Distinct(groups: groups)], db: db)
+  }
+
+  /// Performs aggregation operations on all documents from previous stages.
+  ///
+  /// Computes aggregate values (e.g., sum, average, count) over the entire set of documents
+  /// from the previous stage. Aggregations are defined using `AggregateWithAlias`,
+  /// which pairs an `Accumulator` (e.g., `avg(Field("price"))`) with a result field name.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume pipeline from a "books" collection.
+  /// // Calculate the average rating and total number of books.
+  /// let aggregatedPipeline = pipeline.aggregate(
+  ///   AggregateWithas(aggregate: avg(Field("rating")), alias: "averageRating"),
+  ///   AggregateWithas(aggregate: countAll(), alias: "totalBooks")
+  /// )
+  /// // let results = try await aggregatedPipeline.execute()
+  /// // results.documents might be: [["averageRating": 4.2, "totalBooks": 150]]
+  /// ```
+  ///
+  /// - Parameter accumulator: The first `AggregateWithAlias` expression.
+  /// - Parameter additionalAccumulators: Optional additional `AggregateWithAlias` expressions.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func aggregate(_ accumulator: AggregateWithAlias,
+                        _ additionalAccumulators: AggregateWithAlias...) -> Pipeline {
+    return Pipeline(
+      stages: stages + [Aggregate(
+        accumulators: [accumulator] + additionalAccumulators,
+        groups: nil // No grouping: aggregate over all documents.
+      )],
+      db: db
+    )
+  }
+
+  /// Performs optionally grouped aggregation operations on documents from previous stages.
+  ///
+  /// Calculates aggregate values, optionally grouping documents by fields or `Selectable`
+  /// expressions.
+  /// - **Grouping:** Defined by the `groups` parameter. Each unique combination of values
+  ///   from these `Selectable`s forms a group. If `groups` is `nil` or empty,
+  ///   all documents form a single group.
+  /// - **Accumulators:** An array of `AggregateWithAlias` defining operations
+  ///   (e.g., sum, average) within each group.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume pipeline from "books" collection.
+  /// // Calculate the average rating for each genre.
+  /// let groupedAggregationPipeline = pipeline.aggregate(
+  ///   [AggregateWithas(aggregate: avg(Field("rating")), alias: "avg_rating")],
+  ///   groups: [Field("genre")] // Group by the "genre" field.
+  /// )
+  /// // let results = try await groupedAggregationPipeline.execute()
+  /// // results.documents might be:
+  /// // [
+  /// //   ["genre": "SciFi", "avg_rating": 4.5],
+  /// //   ["genre": "Fantasy", "avg_rating": 4.2]
+  /// // ]
+  /// ```
+  ///
+  /// - Parameters:
+  ///   - accumulator: An array of `AggregateWithAlias` expressions for calculations.
+  ///   - groups: Optional array of `Selectable` expressions for grouping. If `nil` or empty,
+  /// aggregates across all documents.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func aggregate(_ accumulator: [AggregateWithAlias],
+                        groups: [Selectable]? = nil) -> Pipeline {
+    return Pipeline(stages: stages + [Aggregate(accumulators: accumulator, groups: groups)], db: db)
+  }
+
+  /// Performs optionally grouped aggregation operations using field names for grouping.
+  ///
+  /// Similar to the other `aggregate` method, but `groups` are specified as an array of `String`
+  /// field names.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume pipeline from "books" collection.
+  /// // Count books for each publisher.
+  /// let groupedByPublisherPipeline = pipeline.aggregate(
+  ///   [AggregateWithas(aggregate: countAll(), alias: "book_count")],
+  ///   groups: ["publisher"] // Group by the "publisher" field name.
+  /// )
+  /// // let results = try await groupedByPublisherPipeline.execute()
+  /// // results.documents might be:
+  /// // [
+  /// //   ["publisher": "Penguin", "book_count": 50],
+  /// //   ["publisher": "HarperCollins", "book_count": 35]
+  /// // ]
+  /// ```
+  ///
+  /// - Parameters:
+  ///   - accumulator: An array of `AggregateWithAlias` expressions.
+  ///   - groups: An optional array of `String` field names for grouping.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func aggregate(_ accumulator: [AggregateWithAlias],
+                        groups: [String]? = nil) -> Pipeline {
+    let selectables = groups?.map { Field($0) }
+    return Pipeline(
+      stages: stages + [Aggregate(accumulators: accumulator, groups: selectables)],
+      db: db
+    )
+  }
+
+  /// Performs a vector similarity search, ordering results by similarity.
+  ///
+  /// Returns up to `limit` documents, from most to least similar based on vector embeddings.
+  /// The distance can optionally be included in a specified field.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume pipeline from a collection with vector embeddings.
+  /// let queryVector: [Double] = [0.1, 0.2, ..., 0.8] // Example query vector.
+  /// let nearestNeighborsPipeline = pipeline.findNearest(
+  ///   field: Field("embedding_field"),       // Field containing the vector.
+  ///   vectorValue: queryVector,              // Query vector for comparison.
+  ///   distanceMeasure: .COSINE,              // Distance metric.
+  ///   limit: 10,                             // Return top 10 nearest neighbors.
+  ///   distanceField: "similarityScore"       // Optional: field for distance score.
+  /// )
+  /// // let results = try await nearestNeighborsPipeline.execute()
+  /// ```
+  ///
+  /// - Parameters:
+  ///   - field: The `Field` containing vector embeddings.
+  ///   - vectorValue: An array of `Double` representing the query vector.
+  ///   - distanceMeasure: The `DistanceMeasure` (e.g., `.EUCLIDEAN`, `.COSINE`) for comparison.
+  ///   - limit: Optional. Maximum number of similar documents to return.
+  ///   - distanceField: Optional. Name for a new field to store the calculated distance.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func findNearest(field: Field,
+                          vectorValue: [Double],
+                          distanceMeasure: DistanceMeasure,
+                          limit: Int? = nil,
+                          distanceField: String? = nil) -> Pipeline {
+    return Pipeline(
+      stages: stages + [
+        FindNearest(
+          field: field,
+          vectorValue: vectorValue,
+          distanceMeasure: distanceMeasure,
+          limit: limit,
+          distanceField: distanceField
+        ),
+      ],
+      db: db
+    )
+  }
+
+  /// Sorts documents from previous stages based on one or more `Ordering` criteria.
+  ///
+  /// Specify multiple `Ordering` instances for multi-field sorting (ascending/descending).
+  /// If documents are equal by one criterion, the next is used. If all are equal,
+  /// relative order is unspecified.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// // Sort books by rating (descending), then by title (ascending).
+  /// let sortedPipeline = pipeline.sort(
+  ///   Ascending("rating"),
+  ///   Descending("title")  // or Field("title").ascending() for ascending.
+  /// )
+  /// // let results = try await sortedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter ordering: The primary `Ordering` criterion.
+  /// - Parameter additionalOrdering: Optional additional `Ordering` criteria for secondary sorting,
+  /// etc.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func sort(_ ordering: Ordering, _ additionalOrdering: Ordering...) -> Pipeline {
+    let orderings = [ordering] + additionalOrdering
+    return Pipeline(stages: stages + [Sort(orderings: orderings)], db: db)
+  }
+
+  /// Fully overwrites document fields with those from a nested map identified by an `Expr`.
+  ///
+  /// "Promotes" a map value (dictionary) from a field to become the new root document.
+  /// Each key-value pair from the map specified by `expr` becomes a field-value pair
+  /// in the output document, discarding original document fields.
+  ///
+  /// ```swift
+  /// // Assume input document:
+  /// // { "id": "user123", "profile": { "name": "Alex", "age": 30 }, "status": "active" }
+  /// // let pipeline: Pipeline = ...
+  ///
+  /// // Replace document with the contents of the 'profile' map.
+  /// let replacedPipeline = pipeline.replace(with: Field("profile"))
+  ///
+  /// // let results = try await replacedPipeline.execute()
+  /// // Output document would be: { "name": "Alex", "age": 30 }
+  /// ```
+  ///
+  /// - Parameter expr: The `Expr` (typically a `Field`) that resolves to the nested map.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func replace(with expr: Expr) -> Pipeline {
+    return Pipeline(stages: stages + [ReplaceWith(expr: expr)], db: db)
+  }
+
+  /// Fully overwrites document fields with those from a nested map identified by a field name.
+  ///
+  /// "Promotes" a map value (dictionary) from a field to become the new root document.
+  /// Each key-value pair from the map in `fieldName` becomes a field-value pair
+  /// in the output document, discarding original document fields.
+  ///
+  /// ```swift
+  /// // Assume input document:
+  /// // { "id": "user123", "details": { "role": "admin", "department": "tech" }, "joined":
+  /// "2023-01-15" }
+  /// // let pipeline: Pipeline = ...
+  ///
+  /// // Replace document with the contents of the 'details' map.
+  /// let replacedPipeline = pipeline.replace(with: "details")
+  ///
+  /// // let results = try await replacedPipeline.execute()
+  /// // Output document would be: { "role": "admin", "department": "tech" }
+  /// ```
+  ///
+  /// - Parameter fieldName: The name of the field containing the nested map.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func replace(with fieldName: String) -> Pipeline {
+    return Pipeline(stages: stages + [ReplaceWith(expr: Field(fieldName))], db: db)
+  }
+
+  /// Performs pseudo-random sampling of input documents, returning a specific count.
+  ///
+  /// Filters documents pseudo-randomly. `count` specifies the approximate number
+  /// to return. The actual number may vary and isn't guaranteed if the input set
+  /// is smaller than `count`.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume pipeline from a large collection.
+  /// // Sample 25 books, if available.
+  /// let sampledPipeline = pipeline.sample(count: 25)
+  /// // let results = try await sampledPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter count: The target number of documents to sample (a `Int64` value).
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func sample(count: Int64) -> Pipeline {
+    return Pipeline(stages: stages + [Sample(count: count)], db: db)
+  }
+
+  /// Performs pseudo-random sampling of input documents, returning a percentage.
+  ///
+  /// Filters documents pseudo-randomly. `percentage` (0.0 to 1.0) specifies
+  /// the approximate fraction of documents to return from the input set.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ... // Assume initial pipeline.
+  /// // Sample 50% of books.
+  /// let sampledPipeline = pipeline.sample(percentage: 0.5)
+  /// // let results = try await sampledPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter percentage: The percentage of documents to sample (e.g., 0.5 for 50%; a `Double`
+  /// value).
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func sample(percentage: Double) -> Pipeline {
+    return Pipeline(stages: stages + [Sample(percentage: percentage)], db: db)
+  }
+
+  /// Performs a union of all documents from this pipeline and another, including duplicates.
+  ///
+  /// Passes through documents from this pipeline's previous stage and also those from
+  /// the `other` pipeline's previous stage. The order of emitted documents is undefined.
+  /// Both pipelines should ideally have compatible document structures.
+  ///
+  /// ```swift
+  /// // let db: Firestore = ...
+  /// // let booksPipeline = db.collection("books").pipeline().select("title", "category")
+  /// // let magazinesPipeline = db.collection("magazines").pipeline().select("title",
+  /// Field("topic").as("category"))
+  ///
+  /// // Emit documents from both "books" and "magazines" collections.
+  /// let combinedPipeline = booksPipeline.union(magazinesPipeline)
+  /// // let results = try await combinedPipeline.execute()
+  /// ```
+  ///
+  /// - Parameter other: The other `Pipeline` whose documents will be unioned.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func union(_ other: Pipeline) -> Pipeline {
+    return Pipeline(stages: stages + [Union(other: other)], db: db)
+  }
+
+  /// Takes an array field from input documents and outputs a new document for each element.
+  ///
+  /// For each input document, this stage emits zero or more augmented documents based on
+  /// an array field specified by `field` (a `Selectable`). The `Selectable` for `field`
+  /// **must** have an alias; this alias becomes the field name in the output document
+  /// containing the unnested element.
+  ///
+  /// The original field containing the array is effectively replaced by the array element
+  /// under the new alias name in each output document. Other fields from the original document
+  /// are typically preserved.
+  ///
+  /// If `indexField` is provided, a new field with this name is added, containing the
+  /// zero-based index of the element within its original array.
+  ///
+  /// Behavior for non-array values or empty arrays depends on the backend.
+  ///
+  /// ```swift
+  /// // Assume input document:
+  /// // { "title": "The Hitchhiker's Guide", "authors": ["Douglas Adams", "Eoin Colfer"] }
+  /// // let pipeline: Pipeline = ...
+  ///
+  /// // Unnest 'authors'. Each author becomes a new document with the author in a "authorName"
+  /// field.
+  /// let unnestedPipeline = pipeline.unnest(Field("authors").as("authorName"), indexField:
+  /// "authorIndex")
+  ///
+  /// // let results = try await unnestedPipeline.execute()
+  /// // Possible Output (other fields like "title" are preserved):
+  /// // { "title": "The Hitchhiker's Guide", "authorName": "Douglas Adams", "authorIndex": 0 }
+  /// // { "title": "The Hitchhiker's Guide", "authorName": "Eoin Colfer", "authorIndex": 1 }
+  /// ```
+  ///
+  /// - Parameters:
+  ///   - field: A `Selectable` resolving to an array field. **Must include an alias**
+  ///            (e.g., `Field("myArray").as("arrayElement")`) to name the output field.
+  ///   - indexField: Optional. If provided, this string names a new field for the element's
+  ///                 zero-based index from the original array.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func unnest(_ field: Selectable, indexField: String? = nil) -> Pipeline {
+    return Pipeline(stages: stages + [Unnest(field: field, indexField: indexField)], db: db)
+  }
+
+  /// Adds a generic stage to the pipeline by specifying its name and parameters.
+  ///
+  /// Use this to call backend-supported stages not yet strongly-typed in the SDK.
+  /// This method does not offer compile-time type safety for stage parameters;
+  /// the caller must ensure correct name, order, and types.
+  ///
+  /// Parameters in `params` and `options` are typically primitive types, `Field`,
+  /// `Function`, `Expr`, or arrays/dictionaries thereof.
+  ///
+  /// ```swift
+  /// // let pipeline: Pipeline = ...
+  /// // Example: Assuming a hypothetical backend stage "customFilterV2".
+  /// let genericPipeline = pipeline.rawStage(
+  ///   name: "customFilterV2",
+  ///   params: [Field("userScore"), 80], // Ordered parameters.
+  ///   options: ["mode": "strict", "logLevel": 2]  // Optional named parameters.
+  /// )
+  /// // let results = try await genericPipeline.execute()
+  /// ```
+  ///
+  /// - Parameters:
+  ///   - name: The unique name of the stage (as recognized by the backend).
+  ///   - params: An array of ordered, `Sendable` parameters for the stage.
+  ///   - options: Optional dictionary of named, `Sendable` parameters.
+  /// - Returns: A new `Pipeline` object with this stage appended.
+  public func rawStage(name: String, params: [Sendable?],
+                       options: [String: Sendable]? = nil) -> Pipeline {
+    return Pipeline(
+      stages: stages + [RawStage(name: name, params: params, options: options)],
+      db: db
+    )
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineResult.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineResult.swift
new file mode 100644
index 00000000000..67e55663268
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineResult.swift
@@ -0,0 +1,70 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+import Foundation
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+public struct PipelineResult: @unchecked Sendable {
+  let bridge: __PipelineResultBridge
+
+  init(_ bridge: __PipelineResultBridge) {
+    self.bridge = bridge
+    ref = self.bridge.reference
+    id = self.bridge.documentID
+    data = self.bridge.data().mapValues { Helper.convertObjCToSwift($0) }
+    createTime = self.bridge.create_time
+    updateTime = self.bridge.update_time
+  }
+
+  /// The reference of the document, if the query returns the `__name__` field.
+  public let ref: DocumentReference?
+
+  /// The ID of the document for which this `PipelineResult` contains data, if available.
+  public let id: String?
+
+  /// The time the document was created, if available.
+  public let createTime: Timestamp?
+
+  /// The time the document was last updated when the snapshot was generated.
+  public let updateTime: Timestamp?
+
+  /// Retrieves all fields in the result as a dictionary.
+  public let data: [String: Sendable?]
+
+  /// Retrieves the field specified by `fieldPath`.
+  /// - Parameter fieldPath: The field path (e.g., "foo" or "foo.bar").
+  /// - Returns: The data at the specified field location or `nil` if no such field exists.
+  public func get(_ fieldName: String) -> Sendable? {
+    return Helper.convertObjCToSwift(bridge.get(fieldName))
+  }
+
+  /// Retrieves the field specified by `fieldPath`.
+  /// - Parameter fieldPath: The field path (e.g., "foo" or "foo.bar").
+  /// - Returns: The data at the specified field location or `nil` if no such field exists.
+  public func get(_ fieldPath: FieldPath) -> Sendable? {
+    return Helper.convertObjCToSwift(bridge.get(fieldPath))
+  }
+
+  /// Retrieves the field specified by `fieldPath`.
+  /// - Parameter fieldPath: The field path (e.g., "foo" or "foo.bar").
+  /// - Returns: The data at the specified field location or `nil` if no such field exists.
+  public func get(_ field: Field) -> Sendable? {
+    return Helper.convertObjCToSwift(bridge.get(field.fieldName))
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineSnapshot.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineSnapshot.swift
new file mode 100644
index 00000000000..a260cc55cee
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineSnapshot.swift
@@ -0,0 +1,41 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+import Foundation
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+public struct PipelineSnapshot: Sendable {
+  /// The Pipeline on which `execute()` was called to obtain this `PipelineSnapshot`.
+  public let pipeline: Pipeline
+
+  /// An array of all the results in the `PipelineSnapshot`.
+  public let results: [PipelineResult]
+
+  /// The time at which the pipeline producing this result was executed.
+  public let executionTime: Timestamp
+
+  let bridge: __PipelineSnapshotBridge
+
+  init(_ bridge: __PipelineSnapshotBridge, pipeline: Pipeline) {
+    self.bridge = bridge
+    self.pipeline = pipeline
+    executionTime = self.bridge.execution_time
+    results = self.bridge.results.map { PipelineResult($0) }
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineSource.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineSource.swift
new file mode 100644
index 00000000000..6a0026340a2
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/PipelineSource.swift
@@ -0,0 +1,60 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+public struct PipelineSource: @unchecked Sendable {
+  let db: Firestore
+
+  init(_ db: Firestore) {
+    self.db = db
+  }
+
+  public func collection(_ path: String) -> Pipeline {
+    return Pipeline(stages: [CollectionSource(collection: db.collection(path), db: db)], db: db)
+  }
+
+  public func collection(_ ref: CollectionReference) -> Pipeline {
+    let collectionStage = CollectionSource(collection: ref, db: db)
+    return Pipeline(stages: [collectionStage], db: db)
+  }
+
+  public func collectionGroup(_ collectionId: String) -> Pipeline {
+    return Pipeline(
+      stages: [CollectionGroupSource(collectionId: collectionId)],
+      db: db
+    )
+  }
+
+  public func database() -> Pipeline {
+    return Pipeline(stages: [DatabaseSource()], db: db)
+  }
+
+  public func documents(_ docs: [DocumentReference]) -> Pipeline {
+    return Pipeline(stages: [DocumentsSource(docs: docs, db: db)], db: db)
+  }
+
+  public func documents(_ paths: [String]) -> Pipeline {
+    let docs = paths.map { db.document($0) }
+    let documentsStage = DocumentsSource(docs: docs, db: db)
+    return Pipeline(stages: [documentsStage], db: db)
+  }
+
+  public func create(from query: Query) -> Pipeline {
+    return Pipeline(stages: [QuerySource(query: query)], db: db)
+  }
+
+  public func create(from aggregateQuery: AggregateQuery) -> Pipeline {
+    return Pipeline(stages: [AggregateQuerySource(aggregateQuery: aggregateQuery)], db: db)
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/RealtimePipeline.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/RealtimePipeline.swift
new file mode 100644
index 00000000000..de1a709d44d
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/RealtimePipeline.swift
@@ -0,0 +1,15 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public struct RealtimePipeline: @unchecked Sendable {}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/Selectable.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/Selectable.swift
new file mode 100644
index 00000000000..a9c655f4e6a
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/Selectable.swift
@@ -0,0 +1,15 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public protocol Selectable: Sendable {}
diff --git a/Firestore/Swift/Source/SwiftAPI/Pipeline/TimeUnit.swift b/Firestore/Swift/Source/SwiftAPI/Pipeline/TimeUnit.swift
new file mode 100644
index 00000000000..0b8aa112db8
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Pipeline/TimeUnit.swift
@@ -0,0 +1,37 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+public struct TimeUnit: Sendable, Equatable, Hashable {
+  enum Kind: String {
+    case microsecond
+    case millisecond
+    case second
+    case minute
+    case hour
+    case day
+  }
+
+  public static let microsecond = TimeUnit(kind: .microsecond)
+  public static let millisecond = TimeUnit(kind: .millisecond)
+  public static let second = TimeUnit(kind: .second)
+  public static let minute = TimeUnit(kind: .minute)
+  public static let hour = TimeUnit(kind: .hour)
+  public static let day = TimeUnit(kind: .day)
+
+  public let rawValue: String
+
+  init(kind: Kind) {
+    rawValue = kind.rawValue
+  }
+}
diff --git a/Firestore/Swift/Source/SwiftAPI/Stages.swift b/Firestore/Swift/Source/SwiftAPI/Stages.swift
new file mode 100644
index 00000000000..9f6d071d9ff
--- /dev/null
+++ b/Firestore/Swift/Source/SwiftAPI/Stages.swift
@@ -0,0 +1,363 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import Foundation
+
+#if SWIFT_PACKAGE
+  @_exported import FirebaseFirestoreInternalWrapper
+#else
+  @_exported import FirebaseFirestoreInternal
+#endif // SWIFT_PACKAGE
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+protocol Stage {
+  var name: String { get }
+  var bridge: StageBridge { get }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class CollectionSource: Stage {
+  let name: String = "collection"
+
+  let bridge: StageBridge
+  private var collection: CollectionReference
+  private let db: Firestore
+
+  init(collection: CollectionReference, db: Firestore) {
+    self.collection = collection
+    self.db = db
+    bridge = CollectionSourceStageBridge(ref: collection, firestore: db)
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class CollectionGroupSource: Stage {
+  let name: String = "collectionId"
+
+  let bridge: StageBridge
+  private var collectionId: String
+
+  init(collectionId: String) {
+    self.collectionId = collectionId
+    bridge = CollectionGroupSourceStageBridge(collectionId: collectionId)
+  }
+}
+
+// Represents the entire database as a source.
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class DatabaseSource: Stage {
+  let name: String = "database"
+  let bridge: StageBridge
+
+  init() {
+    bridge = DatabaseSourceStageBridge()
+  }
+}
+
+// Represents a list of document references as a source.
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class DocumentsSource: Stage {
+  let name: String = "documents"
+  let bridge: StageBridge
+  private var docs: [DocumentReference]
+  private let db: Firestore
+
+  // Initialize with an array of String paths
+  init(docs: [DocumentReference], db: Firestore) {
+    self.docs = docs
+    self.db = db
+    bridge = DocumentsSourceStageBridge(documents: docs, firestore: db)
+  }
+}
+
+// Represents an existing Query as a source.
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class QuerySource: Stage {
+  let name: String = "query"
+  let bridge: StageBridge
+  private var query: Query
+
+  init(query: Query) {
+    self.query = query
+    bridge = DatabaseSourceStageBridge()
+    // TODO: bridge = QuerySourceStageBridge(query: query.query)
+  }
+}
+
+// Represents an existing AggregateQuery as a source.
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class AggregateQuerySource: Stage {
+  let name: String = "aggregateQuery"
+  let bridge: StageBridge
+  private var aggregateQuery: AggregateQuery
+
+  init(aggregateQuery: AggregateQuery) {
+    self.aggregateQuery = aggregateQuery
+    bridge = DatabaseSourceStageBridge()
+    // TODO: bridge = AggregateQuerySourceStageBridge(aggregateQuery: aggregateQuery.query)
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Where: Stage {
+  let name: String = "where"
+
+  let bridge: StageBridge
+  private var condition: BooleanExpr
+
+  init(condition: BooleanExpr) {
+    self.condition = condition
+    bridge = WhereStageBridge(expr: condition.toBridge())
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Limit: Stage {
+  let name: String = "limit"
+
+  let bridge: StageBridge
+  private var limit: Int32
+
+  init(_ limit: Int32) {
+    self.limit = limit
+    bridge = LimitStageBridge(limit: NSInteger(limit))
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Offset: Stage {
+  let name: String = "offset"
+
+  let bridge: StageBridge
+  private var offset: Int32
+
+  init(_ offset: Int32) {
+    self.offset = offset
+    bridge = OffsetStageBridge(offset: NSInteger(offset))
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class AddFields: Stage {
+  let name: String = "addFields"
+  let bridge: StageBridge
+  private var fields: [Selectable]
+
+  init(fields: [Selectable]) {
+    self.fields = fields
+    let objc_accumulators = fields.reduce(into: [String: ExprBridge]()) {
+      result,
+        field
+      in
+      let seletable = field as! SelectableWrapper
+      result[seletable.alias] = seletable.expr.toBridge()
+    }
+    bridge = AddFieldsStageBridge(fields: objc_accumulators)
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class RemoveFieldsStage: Stage {
+  let name: String = "removeFields"
+  let bridge: StageBridge
+  private var fields: [String]
+
+  init(fields: [String]) {
+    self.fields = fields
+    bridge = RemoveFieldsStageBridge(fields: fields)
+  }
+
+  init(fields: [Field]) {
+    self.fields = fields.map { $0.fieldName }
+    bridge = RemoveFieldsStageBridge(fields: self.fields)
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Select: Stage {
+  let name: String = "select"
+  let bridge: StageBridge
+  private var selections: [Selectable]
+
+  init(selections: [Selectable]) {
+    self.selections = selections
+    let map = Helper.selectablesToMap(selectables: selections)
+    bridge = SelectStageBridge(selections: map
+      .mapValues { Helper.sendableToExpr($0).toBridge() })
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Distinct: Stage {
+  let name: String = "distinct"
+  let bridge: StageBridge
+  private var groups: [Selectable]
+
+  init(groups: [Selectable]) {
+    self.groups = groups
+    let map = Helper.selectablesToMap(selectables: groups)
+    bridge = DistinctStageBridge(groups: map
+      .mapValues { Helper.sendableToExpr($0).toBridge() })
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Aggregate: Stage {
+  let name: String = "aggregate"
+  let bridge: StageBridge
+  private var accumulators: [AggregateWithAlias]
+  private var groups: [String: Expr] = [:]
+
+  init(accumulators: [AggregateWithAlias], groups: [Selectable]?) {
+    self.accumulators = accumulators
+    if groups != nil {
+      self.groups = Helper.selectablesToMap(selectables: groups!)
+    }
+    let map = accumulators
+      .reduce(into: [String: AggregateFunctionBridge]()) { result, accumulator in
+        result[accumulator.alias] = accumulator.aggregate.bridge
+      }
+    bridge = AggregateStageBridge(
+      accumulators: map,
+      groups: self.groups.mapValues { Helper.sendableToExpr($0).toBridge() }
+    )
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class FindNearest: Stage {
+  let name: String = "findNearest"
+  let bridge: StageBridge
+  private var field: Field
+  private var vectorValue: [Double]
+  private var distanceMeasure: DistanceMeasure
+  private var limit: Int?
+  private var distanceField: String?
+
+  init(field: Field,
+       vectorValue: [Double],
+       distanceMeasure: DistanceMeasure,
+       limit: Int? = nil,
+       distanceField: String? = nil) {
+    self.field = field
+    self.vectorValue = vectorValue
+    self.distanceMeasure = distanceMeasure
+    self.limit = limit
+    self.distanceField = distanceField
+    bridge = FindNearestStageBridge(
+      field: field.bridge as! FieldBridge,
+      vectorValue: VectorValue(vectorValue),
+      distanceMeasure: distanceMeasure.kind.rawValue,
+      limit: limit as NSNumber?,
+      distanceField: distanceField.map { Field($0).toBridge() } ?? nil
+    )
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Sort: Stage {
+  let name: String = "sort"
+  let bridge: StageBridge
+  private var orderings: [Ordering]
+
+  init(orderings: [Ordering]) {
+    self.orderings = orderings
+    bridge = SortStageBridge(orderings: orderings.map { $0.bridge })
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class ReplaceWith: Stage {
+  let name: String = "replaceWith"
+  let bridge: StageBridge
+  private var expr: Expr
+
+  init(expr: Expr) {
+    self.expr = expr
+    bridge = ReplaceWithStageBridge(expr: expr.toBridge())
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Sample: Stage {
+  let name: String = "sample"
+  let bridge: StageBridge
+  private var count: Int64?
+  private var percentage: Double?
+
+  init(count: Int64) {
+    self.count = count
+    percentage = nil
+    bridge = SampleStageBridge(count: count)
+  }
+
+  init(percentage: Double) {
+    self.percentage = percentage
+    count = nil
+    bridge = SampleStageBridge(percentage: percentage)
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Union: Stage {
+  let name: String = "union"
+  let bridge: StageBridge
+  private var other: Pipeline
+
+  init(other: Pipeline) {
+    self.other = other
+    bridge = UnionStageBridge(other: other.bridge)
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class Unnest: Stage {
+  let name: String = "unnest"
+  let bridge: StageBridge
+  private var alias: Expr
+  private var field: Expr
+  private var indexField: String?
+
+  init(field: Selectable, indexField: String? = nil) {
+    let seletable = field as! SelectableWrapper
+    self.field = seletable.expr
+    alias = Field(seletable.alias)
+    self.indexField = indexField
+
+    bridge = UnnestStageBridge(
+      field: self.field.toBridge(),
+      alias: alias.toBridge(),
+      indexField: indexField.map { Field($0).toBridge() } ?? nil
+    )
+  }
+}
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class RawStage: Stage {
+  let name: String
+  let bridge: StageBridge
+  private var params: [Sendable?]
+  private var options: [String: Sendable]?
+
+  init(name: String, params: [Sendable?], options: [String: Sendable]? = nil) {
+    self.name = name
+    self.params = params
+    self.options = options
+    let bridgeParams = params.map { Helper.sendableToAnyObjectForRawStage($0) }
+    let bridgeOptions = options?.mapValues { Helper.sendableToExpr($0).toBridge() }
+    bridge = RawStageBridge(name: name, params: bridgeParams, options: bridgeOptions)
+  }
+}
diff --git a/Firestore/Swift/Tests/Integration/PipelineApiTests.swift b/Firestore/Swift/Tests/Integration/PipelineApiTests.swift
new file mode 100644
index 00000000000..f712cceca1f
--- /dev/null
+++ b/Firestore/Swift/Tests/Integration/PipelineApiTests.swift
@@ -0,0 +1,404 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Foundation
+import XCTest
+
+import FirebaseFirestore
+
+final class PipelineTests: FSTIntegrationTestCase {
+  override func setUp() {
+    FSTIntegrationTestCase.switchToEnterpriseMode()
+    super.setUp()
+  }
+
+  func testCreatePipeline() async throws {
+    let pipelineSource: PipelineSource = db.pipeline()
+
+    let pipeline: Pipeline = pipelineSource.documents(
+      [db.collection("foo").document("bar"), db.document("foo/baz")]
+    )
+    let _: Pipeline = pipelineSource.collection("foo")
+    let _: Pipeline = pipelineSource.collectionGroup("foo")
+    let _: Pipeline = pipelineSource.database()
+
+    let query: Query = db.collection("foo").limit(to: 2)
+    let _: Pipeline = pipelineSource.create(from: query)
+
+    let aggregateQuery = db.collection("foo").count
+    let _: Pipeline = pipelineSource.create(from: aggregateQuery)
+
+    let _: PipelineSnapshot = try await pipeline.execute()
+  }
+
+  func testWhereStage() async throws {
+    _ = db.pipeline().collection("books")
+      .where(
+        Field("rating").gt(4.0) && Field("genre").eq("Science Fiction") || ArrayContains(
+          fieldName: "fieldName",
+          values: "rating"
+        )
+      )
+  }
+
+  func testAddFieldStage() async throws {
+    // Input
+    // { title: 'title1', price: 10, discount: 0.8 },
+    // { title: 'title2', price: 12, discount: 1.0 },
+    // { title: 'title3', price: 5,  discount: 0.66 }
+
+    // An expression that will compute price from the value of msrp field and discount field
+    let priceExpr: FunctionExpr = Field("msrp").multiply(Field("discount"))
+
+    // An expression becomes a Selectable when given an alias. In this case
+    // the alias is 'salePrice'
+    let priceSelectableExpr: Selectable = priceExpr.as("salePrice")
+
+    _ = db.pipeline().collection("books")
+      .addFields(
+        priceSelectableExpr // Add field `salePrice` based computed from msrp and discount
+      )
+
+    // We don't expect customers to separate the Expression definition from the
+    // Pipeline definition. This was shown above so readers of this doc can see
+    // the different types involved. The cleaner way to write the code above
+    // is to inline the Expr definition
+    _ = db.pipeline().collection("books")
+      .addFields(
+        Field("msrp").multiply(Field("discount")).as("salePrice"),
+        Field("author")
+      )
+
+    // Output
+    // { title: 'title1', price: 10, discount: 0.8,  salePrice: 8.0},
+    // { title: 'title2', price: 12, discount: 1.0,  salePrice: 12.0 },
+    // { title: 'title3', price: 5,  discount: 0.66, salePrice: 3.30 }
+  }
+
+  func testRemoveFieldsStage() async throws {
+    // removes field 'rating' and 'cost' from the previous stage outputs.
+    _ = db.pipeline().collection("books").removeFields("rating", "cost")
+
+    // removes field 'rating'.
+    _ = db.pipeline().collection("books").removeFields(Field("rating"))
+  }
+
+  func testSelectStage() async throws {
+    // Input
+    // { title: 'title1', price: 10, discount: 0.8 },
+    // { title: 'title2', price: 12, discount: 1.0 },
+    // { title: 'title3', price: 5,  discount: 0.66 }
+
+    // Overload for string and Selectable
+    _ = db.pipeline().collection("books")
+      .select(
+        Field("title"), // Field class inheritates Selectable
+        Field("msrp").multiply(Field("discount")).as("salePrice")
+      )
+
+    _ = db.pipeline().collection("books").select("title", "author")
+
+    // Output
+    // { title: 'title1', salePrice: 8.0},
+    // { title: 'title2', salePrice: 12.0 },
+    // { title: 'title3', salePrice: 3.30 }
+  }
+
+  func testSortStage() async throws {
+    // Sort books by rating in descending order, and then by title in ascending order for books
+    // with the same rating
+    _ = db.pipeline().collection("books")
+      .sort(
+        Field("rating").descending(),
+        Ascending("title") // alternative API offered
+      )
+  }
+
+  func testLimitStage() async throws {
+    // Limit the results to the top 10 highest-rated books
+    _ = db.pipeline().collection("books")
+      .sort(Field("rating").descending())
+      .limit(10)
+  }
+
+  func testOffsetStage() async throws {
+    // Retrieve the second page of 20 results
+    _ = db.pipeline().collection("books")
+      .sort(Field("published").descending())
+      .offset(20) // Skip the first 20 results. Note that this must come
+      // before .limit(...) unlike in Query where the order did not matter.
+      .limit(20) // Take the next 20 results
+  }
+
+  func testDistinctStage() async throws {
+    // Input
+    // { author: 'authorA', genre: 'genreA', title: 'title1' },
+    // { author: 'authorb', genre: 'genreB', title: 'title2' },
+    // { author: 'authorB', genre: 'genreB', title: 'title3' }
+
+    // Get a list of unique author names in uppercase and genre combinations.
+    _ = db.pipeline().collection("books")
+      .distinct(
+        Field("author").uppercased().as("authorName"),
+        Field("genre")
+      )
+
+    // Output
+    // { authorName: 'AUTHORA', genre: 'genreA' },
+    // { authorName: 'AUTHORB', genre: 'genreB' }
+  }
+
+  func testAggregateStage() async throws {
+    // Input
+    // { genre: 'genreA', title: 'title1', rating: 5.0 },
+    // { genre: 'genreB', title: 'title2', rating: 1.5 },
+    // { genre: 'genreB', title: 'title3', rating: 2.5 }
+
+    // Calculate the average rating and the total number of books
+    _ = db.pipeline().collection("books")
+      .aggregate(
+        Field("rating").avg().as("averageRating"),
+        CountAll().as("totalBooks")
+      )
+
+    // Output
+    // { totalBooks: 3, averageRating: 3.0 }
+
+    // Input
+    // { genre: 'genreA', title: 'title1', rating: 5.0 },
+    // { genre: 'genreB', title: 'title2', rating: 1.5 },
+    // { genre: 'genreB', title: 'title3', rating: 2.5 }
+
+    // Calculate the average rating and the total number of books and group by field 'genre'
+    _ = db.pipeline().collection("books")
+      .aggregate([
+        Field("rating").avg().as("averageRating"),
+        CountAll().as("totalBooks"),
+      ],
+      groups: ["genre"])
+
+    // Output
+    // { genre: 'genreA', totalBooks: 1, averageRating: 5.0 }
+    // { genre: 'genreB', totalBooks: 2, averageRating: 2.0 }
+  }
+
+  func testFindNearestStage() async throws {
+    _ = db.pipeline().collection("books").findNearest(
+      field: Field("embedding"),
+      vectorValue: [5.0],
+      distanceMeasure: .cosine,
+      limit: 3)
+  }
+
+  func testReplaceStage() async throws {
+    // Input.
+    // {
+//  "name": "John Doe Jr.",
+//  "parents": {
+//    "father": "John Doe Sr.",
+//    "mother": "Jane Doe"
+//    }
+    // }
+
+    // Emit field parents as the document.
+    _ = db.pipeline().collection("people")
+      .replace(with: Field("parents"))
+
+    // Output
+    // {
+//  "father": "John Doe Sr.",
+//  "mother": "Jane Doe"
+    // }
+  }
+
+  func testSampleStage() async throws {
+    // Sample 25 books, if the collection contains at least 25 documents
+    _ = db.pipeline().collection("books").sample(count: 10)
+
+    // Sample 10 percent of the collection of books
+    _ = db.pipeline().collection("books").sample(percentage: 10)
+  }
+
+  func testUnionStage() async throws {
+    // Emit documents from books collection and magazines collection.
+    _ = db.pipeline().collection("books")
+      .union(db.pipeline().collection("magazines"))
+  }
+
+  func testUnnestStage() async throws {
+    // Input:
+    // { "title": "The Hitchhiker's Guide to the Galaxy", "tags": [ "comedy", "space", "adventure"
+    // ], ... }
+
+    // Emit a book document for each tag of the book.
+    _ = db.pipeline().collection("books")
+      .unnest(Field("tags").as("tag"))
+
+    // Output:
+    // { "title": "The Hitchhiker's Guide to the Galaxy", "tag": "comedy", tags: [...], ... }
+    // { "title": "The Hitchhiker's Guide to the Galaxy", "tag": "space", tags: [...], ... }
+    // { "title": "The Hitchhiker's Guide to the Galaxy", "tag": "adventure", tags: [...], ... }
+
+    // Emit a book document for each tag of the book mapped to its' index in the array.
+    _ = db.pipeline().collection("books")
+      .unnest(Field("tags").as("tag"), indexField: "index")
+
+    // Output:
+    // { "title": "The Hitchhiker's Guide to the Galaxy", "tag": "comedy", index: 0, tags: [...],
+    // ... }
+    // { "title": "The Hitchhiker's Guide to the Galaxy", "tag": "space", index: 1, tags: [...], ...
+    // }
+    // { "title": "The Hitchhiker's Guide to the Galaxy", "tag": "adventure", index: 2, tags: [...],
+    // ... }
+  }
+
+  func testRawStage() async throws {
+    // Assume we don't have a built-in "where" stage, the customer could still
+    // add this stage by calling rawStage, passing the name of the stage "where",
+    // and providing positional argument values.
+    _ = db.pipeline().collection("books")
+      .rawStage(name: "where",
+                params: [Field("published").lt(1900)])
+      .select("title", "author")
+
+    // In cases where the stage also supports named argument values, then these can be
+    // provided with a third argument that maps the argument name to value.
+    // Note that these named arguments are always optional in the stage definition.
+    _ = db.pipeline().collection("books")
+      .rawStage(name: "where",
+                params: [Field("published").lt(1900)],
+                options: ["someOptionalParamName": "the argument value for this param"])
+      .select("title", "author")
+  }
+
+  func testField() async throws {
+    // An expression that will return the value of the field `name` in the document
+    let nameField = Field("name")
+
+    // An expression that will return the value of the field `description` in the document
+    // Field is a sub-type of Expr, so we can also declare our var of type Expr
+    let descriptionField: Expr = Field("description")
+
+    // USAGE: anywhere an Expr type is accepted
+    // Use a field in a pipeline
+    _ = db.pipeline().collection("books")
+      .addFields(
+        Field("rating").as("bookRating") // Duplicate field 'rating' as 'bookRating'
+      )
+
+    // One special Field value is conveniently exposed as static function to help the user reference
+    // reserved field values of __name__.
+    _ = db.pipeline().collection("books")
+      .addFields(
+        DocumentId()
+      )
+  }
+
+  func testConstant() async throws {
+    // A constant for a number
+    let three = Constant(3)
+
+    // A constant for a string
+    let name = Constant("Expressions API")
+
+    // Const is a sub-type of Expr, so we can also declare our var of type Expr
+    let nothing: Expr = Constant.nil
+
+    // USAGE: Anywhere an Expr type is accepted
+    // Add field `fromTheLibraryOf: 'Rafi'` to every document in the collection.
+    _ = db.pipeline().collection("books")
+      .addFields(Constant("Rafi").as("fromTheLibraryOf"))
+  }
+
+  func testFunctionExpr() async throws {
+    let secondsField = Field("seconds")
+
+    // Create a FunctionExpr using the multiply function to compute milliseconds
+    let milliseconds: FunctionExpr = secondsField.multiply(1000)
+
+    // A firestore function is also a sub-type of Expr
+    let myExpr: Expr = milliseconds
+  }
+
+  func testBooleanExpr() async throws {
+    let isApple: BooleanExpr = Field("type").eq("apple")
+
+    // USAGE: stage where requires an expression of type BooleanExpr
+    let allAppleOptions: Pipeline = db.pipeline().collection("fruitOptions").where(isApple)
+  }
+
+  func testSelectableExpr() async throws {
+    let secondsField = Field("seconds")
+
+    // Create a selectable from our milliseconds expression.
+    let millisecondsSelectable: Selectable = secondsField.multiply(1000).as("milliseconds")
+
+    // USAGE: stages addFields and select accept expressions of type Selectable
+    // Add (or overwrite) the 'milliseconds` field to each of our documents using the
+    // `.addFields(...)` stage.
+    _ = db.pipeline().collection("lapTimes")
+      .addFields(secondsField.multiply(1000).as("milliseconds"))
+
+    // NOTE: Field implements Selectable, the alias is the same as the name
+    let secondsSelectable: Selectable = secondsField
+  }
+
+  func testAggregateExpr() async throws {
+    let lapTimeSum: AggregateFunction = Field("seconds").sum()
+
+    let lapTimeSumTarget: AggregateWithAlias = lapTimeSum.as("totalTrackTime")
+
+    // USAGE: stage aggregate accepts expressions of type AggregateWithAlias
+    // A pipeline that will return one document with one field `totalTrackTime` that
+    // is the sum of all laps ever taken on the track.
+    _ = db.pipeline().collection("lapTimes")
+      .aggregate(lapTimeSum.as("totalTrackTime"))
+  }
+
+  func testOrdering() async throws {
+    let fastestToSlowest: Ordering = Field("seconds").ascending()
+
+    // USAGE: stage sort accepts objects of type Ordering
+    // Use this ordering to sort our lap times collection from fastest to slowest
+    _ = db.pipeline().collection("lapTimes").sort(fastestToSlowest)
+  }
+
+  func testExpr() async throws {
+    // An expression that computes the area of a circle
+    // by chaining together two calls to the multiply function
+    let radiusField: Expr = Field("radius")
+    let radiusSq: Expr = radiusField.multiply(Field("radius"))
+    let areaExpr: Expr = radiusSq.multiply(3.14)
+
+    // Or define this expression in one clean, fluent statement
+    let areaOfCircle: Selectable = Field("radius")
+      .multiply(Field("radius"))
+      .multiply(3.14)
+      .as("area")
+
+    // And pass the expression to a Pipeline for evaluation
+    _ = db.pipeline().collection("circles").addFields(areaOfCircle)
+  }
+
+  func testGeneric() async throws {
+    // This is the same of the logicalMin('price', 0)', if it did not exist
+    let myLm = FunctionExpr("logicalMin", [Field("price"), Constant(0)])
+
+    // Create a generic BooleanExpr for use where BooleanExpr is required
+    let myEq = BooleanExpr("eq", [Field("price"), Constant(10)])
+
+    // Create a generic AggregateFunction for use where AggregateFunction is required
+    let mySum = AggregateFunction("sum", [Field("price")])
+  }
+}
diff --git a/Firestore/Swift/Tests/Integration/PipelineTests.swift b/Firestore/Swift/Tests/Integration/PipelineTests.swift
new file mode 100644
index 00000000000..f05a7dcc9eb
--- /dev/null
+++ b/Firestore/Swift/Tests/Integration/PipelineTests.swift
@@ -0,0 +1,3165 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import FirebaseCore
+import FirebaseFirestore
+import Foundation
+import XCTest
+
+private let bookDocs: [String: [String: Sendable]] = [
+  "book1": [
+    "title": "The Hitchhiker's Guide to the Galaxy",
+    "author": "Douglas Adams",
+    "genre": "Science Fiction",
+    "published": 1979,
+    "rating": 4.2,
+    "tags": ["comedy", "space", "adventure"],
+    "awards": ["hugo": true, "nebula": false, "others": ["unknown": ["year": 1980]]], // Corrected
+    "nestedField": ["level.1": ["level.2": true]],
+    "embedding": VectorValue([10, 1, 1, 1, 1, 1, 1, 1, 1, 1]),
+  ],
+  "book2": [
+    "title": "Pride and Prejudice",
+    "author": "Jane Austen",
+    "genre": "Romance",
+    "published": 1813,
+    "rating": 4.5,
+    "tags": ["classic", "social commentary", "love"],
+    "awards": ["none": true],
+    "embedding": VectorValue([1, 10, 1, 1, 1, 1, 1, 1, 1, 1]), // Added
+  ],
+  "book3": [
+    "title": "One Hundred Years of Solitude",
+    "author": "Gabriel García Márquez",
+    "genre": "Magical Realism",
+    "published": 1967,
+    "rating": 4.3,
+    "tags": ["family", "history", "fantasy"],
+    "awards": ["nobel": true, "nebula": false],
+    "embedding": VectorValue([1, 1, 10, 1, 1, 1, 1, 1, 1, 1]),
+  ],
+  "book4": [
+    "title": "The Lord of the Rings",
+    "author": "J.R.R. Tolkien",
+    "genre": "Fantasy",
+    "published": 1954,
+    "rating": 4.7,
+    "tags": ["adventure", "magic", "epic"],
+    "awards": ["hugo": false, "nebula": false],
+    "remarks": NSNull(), // Added
+    "cost": Double.nan, // Added
+    "embedding": VectorValue([1, 1, 1, 10, 1, 1, 1, 1, 1, 1]), // Added
+  ],
+  "book5": [
+    "title": "The Handmaid's Tale",
+    "author": "Margaret Atwood",
+    "genre": "Dystopian",
+    "published": 1985,
+    "rating": 4.1,
+    "tags": ["feminism", "totalitarianism", "resistance"],
+    "awards": ["arthur c. clarke": true, "booker prize": false],
+    "embedding": VectorValue([1, 1, 1, 1, 10, 1, 1, 1, 1, 1]), // Added
+  ],
+  "book6": [
+    "title": "Crime and Punishment",
+    "author": "Fyodor Dostoevsky",
+    "genre": "Psychological Thriller",
+    "published": 1866,
+    "rating": 4.3,
+    "tags": ["philosophy", "crime", "redemption"],
+    "awards": ["none": true],
+    "embedding": VectorValue([1, 1, 1, 1, 1, 10, 1, 1, 1, 1]), // Added
+  ],
+  "book7": [
+    "title": "To Kill a Mockingbird",
+    "author": "Harper Lee",
+    "genre": "Southern Gothic",
+    "published": 1960,
+    "rating": 4.2,
+    "tags": ["racism", "injustice", "coming-of-age"],
+    "awards": ["pulitzer": true],
+    "embedding": VectorValue([1, 1, 1, 1, 1, 1, 10, 1, 1, 1]), // Added
+  ],
+  "book8": [
+    "title": "1984",
+    "author": "George Orwell",
+    "genre": "Dystopian",
+    "published": 1949,
+    "rating": 4.2,
+    "tags": ["surveillance", "totalitarianism", "propaganda"],
+    "awards": ["prometheus": true],
+    "embedding": VectorValue([1, 1, 1, 1, 1, 1, 1, 10, 1, 1]), // Added
+  ],
+  "book9": [
+    "title": "The Great Gatsby",
+    "author": "F. Scott Fitzgerald",
+    "genre": "Modernist",
+    "published": 1925,
+    "rating": 4.0,
+    "tags": ["wealth", "american dream", "love"],
+    "awards": ["none": true],
+    "embedding": VectorValue([1, 1, 1, 1, 1, 1, 1, 1, 10, 1]), // Added
+  ],
+  "book10": [
+    "title": "Dune",
+    "author": "Frank Herbert",
+    "genre": "Science Fiction",
+    "published": 1965,
+    "rating": 4.6,
+    "tags": ["politics", "desert", "ecology"],
+    "awards": ["hugo": true, "nebula": true],
+    "embedding": VectorValue([1, 1, 1, 1, 1, 1, 1, 1, 1, 10]), // Added
+  ],
+]
+
+@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
+class PipelineIntegrationTests: FSTIntegrationTestCase {
+  override func setUp() {
+    FSTIntegrationTestCase.switchToEnterpriseMode()
+    super.setUp()
+  }
+
+  func testEmptyResults() async throws {
+    let collRef = collectionRef(
+      withDocuments: bookDocs
+    )
+    let db = collRef.firestore
+
+    let snapshot = try await db
+      .pipeline()
+      .collection(collRef.path)
+      .limit(0)
+      .execute()
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedCount: 0)
+  }
+
+  func testFullResults() async throws {
+    let collRef = collectionRef(
+      withDocuments: bookDocs
+    )
+    let db = collRef.firestore
+
+    let snapshot = try await db
+      .pipeline()
+      .collection(collRef.path)
+      .execute()
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedIDs: [
+      "book1", "book10", "book2", "book3", "book4",
+      "book5", "book6", "book7", "book8", "book9",
+    ], enforceOrder: false)
+  }
+
+  func testReturnsExecutionTime() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline().collection(collRef.path)
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, bookDocs.count, "Should fetch all documents")
+
+    let executionTimeValue = snapshot.executionTime.dateValue().timeIntervalSince1970
+
+    XCTAssertGreaterThan(executionTimeValue, 0, "Execution time should be positive and not zero")
+  }
+
+  func testReturnsExecutionTimeForEmptyQuery() async throws {
+    let collRef =
+      collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline().collection(collRef.path).limit(0)
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedCount: 0)
+
+    let executionTimeValue = snapshot.executionTime.dateValue().timeIntervalSince1970
+    XCTAssertGreaterThan(executionTimeValue, 0, "Execution time should be positive and not zero")
+  }
+
+  func testReturnsCreateAndUpdateTimeForEachDocument() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+    let pipeline = db.pipeline().collection(collRef.path)
+    var snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(
+      snapshot.results.count,
+      bookDocs.count,
+      "Initial fetch should return all documents"
+    )
+    for doc in snapshot.results {
+      XCTAssertNotNil(
+        doc.createTime,
+        "Document \(String(describing: doc.id)) should have createTime"
+      )
+      XCTAssertNotNil(
+        doc.updateTime,
+        "Document \(String(describing: doc.id)) should have updateTime"
+      )
+      if let createTime = doc.createTime, let updateTime = doc.updateTime {
+        let createTimestamp = createTime.dateValue().timeIntervalSince1970
+        let updateTimestamp = updateTime.dateValue().timeIntervalSince1970
+
+        XCTAssertEqual(createTimestamp,
+                       updateTimestamp,
+                       "Initial createTime and updateTime should be equal for \(String(describing: doc.id))")
+      }
+    }
+
+    // Update documents
+    let batch = db.batch()
+    for doc in snapshot.results {
+      batch
+        .updateData(
+          ["newField": "value"],
+          forDocument: doc.ref!
+        )
+    }
+
+    try await batch.commit()
+
+    snapshot = try await pipeline.execute()
+    XCTAssertEqual(
+      snapshot.results.count,
+      bookDocs.count,
+      "Fetch after update should return all documents"
+    )
+
+    for doc in snapshot.results {
+      XCTAssertNotNil(
+        doc.createTime,
+        "Document \(String(describing: doc.id)) should still have createTime after update"
+      )
+      XCTAssertNotNil(
+        doc.updateTime,
+        "Document \(String(describing: doc.id)) should still have updateTime after update"
+      )
+      if let createTime = doc.createTime, let updateTime = doc.updateTime {
+        let createTimestamp = createTime.dateValue().timeIntervalSince1970
+        let updateTimestamp = updateTime.dateValue().timeIntervalSince1970
+
+        XCTAssertLessThan(createTimestamp,
+                          updateTimestamp,
+                          "updateTime (\(updateTimestamp)) should be after createTime (\(createTimestamp)) for \(String(describing: doc.id))")
+      }
+    }
+  }
+
+  func testReturnsExecutionTimeForAggregateQuery() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .aggregate(Field("rating").avg().as("avgRating"))
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Aggregate query should return a single result")
+
+    let executionTimeValue = snapshot.executionTime.dateValue().timeIntervalSince1970
+    XCTAssertGreaterThan(executionTimeValue, 0, "Execution time should be positive")
+  }
+
+  func testTimestampsAreNilForAggregateQueryResults() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .aggregate(
+        [Field("rating").avg().as("avgRating")],
+        groups: ["genre"]
+      ) // Make sure 'groupBy' and 'average' are correct
+    let snapshot = try await pipeline.execute()
+
+    // There are 8 unique genres in bookDocs
+    XCTAssertEqual(snapshot.results.count, 8, "Should return one result per genre")
+
+    for doc in snapshot.results {
+      XCTAssertNil(
+        doc.createTime,
+        "createTime should be nil for aggregate result (docID: \(String(describing: doc.id)), data: \(doc.data))"
+      )
+      XCTAssertNil(
+        doc.updateTime,
+        "updateTime should be nil for aggregate result (docID: \(String(describing: doc.id)), data: \(doc.data))"
+      )
+    }
+  }
+
+  func testSupportsCollectionReferenceAsSource() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline().collection(collRef)
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedCount: bookDocs.count)
+  }
+
+  func testSupportsListOfDocumentReferencesAsSource() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let docRefs: [DocumentReference] = [
+      collRef.document("book1"),
+      collRef.document("book2"),
+      collRef.document("book3"),
+    ]
+    let pipeline = db.pipeline().documents(docRefs)
+    let snapshot = try await pipeline.execute()
+
+    TestHelper
+      .compare(
+        pipelineSnapshot: snapshot,
+        expectedIDs: ["book1", "book2", "book3"],
+        enforceOrder: false
+      )
+  }
+
+  func testSupportsListOfDocumentPathsAsSource() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let docPaths: [String] = [
+      collRef.document("book1").path,
+      collRef.document("book2").path,
+      collRef.document("book3").path,
+    ]
+    let pipeline = db.pipeline().documents(docPaths)
+    let snapshot = try await pipeline.execute()
+
+    TestHelper
+      .compare(
+        pipelineSnapshot: snapshot,
+        expectedIDs: ["book1", "book2", "book3"],
+        enforceOrder: false
+      )
+  }
+
+  func testRejectsCollectionReferenceFromAnotherDB() async throws {
+    let db1 = firestore()
+
+    let db2 = Firestore.firestore(app: db1.app, database: "db2")
+
+    let collRefDb2 = db2.collection("foo")
+
+    XCTAssertTrue(FSTNSExceptionUtil.testForException({
+      _ = db1.pipeline().collection(collRefDb2)
+    }, reasonContains: "Invalid CollectionReference"))
+  }
+
+  func testRejectsDocumentReferenceFromAnotherDB() async throws {
+    let db1 = firestore()
+
+    let db2 = Firestore.firestore(app: db1.app, database: "db2")
+
+    let docRefDb2 = db2.collection("foo").document("bar")
+
+    XCTAssertTrue(FSTNSExceptionUtil.testForException({
+      _ = db1.pipeline().documents([docRefDb2])
+    }, reasonContains: "Invalid DocumentReference"))
+  }
+
+  func testSupportsCollectionGroupAsSource() async throws {
+    let db = firestore()
+
+    let rootCollForTest = collectionRef()
+
+    let randomSubCollectionId = String(UUID().uuidString.prefix(8))
+
+    // Create parent documents first to ensure they exist before creating subcollections.
+    let doc1Ref = rootCollForTest.document("book1").collection(randomSubCollectionId)
+      .document("translation")
+    try await doc1Ref.setData(["order": 1])
+
+    let doc2Ref = rootCollForTest.document("book2").collection(randomSubCollectionId)
+      .document("translation")
+    try await doc2Ref.setData(["order": 2])
+
+    let pipeline = db.pipeline()
+      .collectionGroup(randomSubCollectionId)
+      .sort(Field("order").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    // Assert that only the two documents from the targeted subCollectionId are fetched, in the
+    // correct order.
+    TestHelper
+      .compare(
+        pipelineSnapshot: snapshot,
+        expectedIDs: [doc1Ref.documentID, doc2Ref.documentID],
+        enforceOrder: true
+      )
+  }
+
+  func testSupportsDatabaseAsSource() async throws {
+    let db = firestore()
+    let testRootCol = collectionRef() // Provides a unique root path for this test
+
+    let randomIDValue = UUID().uuidString.prefix(8)
+
+    // Document 1
+    let collADocRef = testRootCol.document("docA") // Using specific IDs for clarity in debugging
+    try await collADocRef.setData(["order": 1, "randomId": randomIDValue, "name": "DocInCollA"])
+
+    // Document 2
+    let collBDocRef = testRootCol.document("docB") // Using specific IDs for clarity in debugging
+    try await collBDocRef.setData(["order": 2, "randomId": randomIDValue, "name": "DocInCollB"])
+
+    // Document 3 (control, should not be fetched by the main query due to different randomId)
+    let collCDocRef = testRootCol.document("docC")
+    try await collCDocRef.setData([
+      "order": 3,
+      "randomId": "\(UUID().uuidString)",
+      "name": "DocInCollC",
+    ])
+
+    // Document 4 (control, no randomId, should not be fetched)
+    let collDDocRef = testRootCol.document("docD")
+    try await collDDocRef.setData(["order": 4, "name": "DocInCollDNoRandomId"])
+
+    // Document 5 (control, correct randomId but in a sub-sub-collection to test depth)
+    // This also helps ensure the database() query scans deeply.
+    let subSubCollDocRef = testRootCol.document("parentForSubSub").collection("subSubColl")
+      .document("docE")
+    try await subSubCollDocRef.setData([
+      "order": 0,
+      "randomId": randomIDValue,
+      "name": "DocInSubSubColl",
+    ])
+
+    let pipeline = db.pipeline()
+      .database() // Source is the entire database
+      .where(Field("randomId").eq(randomIDValue))
+      .sort(Ascending("order"))
+    let snapshot = try await pipeline.execute()
+
+    // We expect 3 documents: docA, docB, and docE (from sub-sub-collection)
+    XCTAssertEqual(
+      snapshot.results.count,
+      3,
+      "Should fetch the three documents with the correct randomId"
+    )
+    // Order should be docE (order 0), docA (order 1), docB (order 2)
+    TestHelper
+      .compare(
+        pipelineSnapshot: snapshot,
+        expectedIDs: [subSubCollDocRef.documentID, collADocRef.documentID, collBDocRef.documentID],
+        enforceOrder: true
+      )
+  }
+
+  func testAcceptsAndReturnsAllSupportedDataTypes() async throws {
+    let db = firestore()
+    let randomCol = collectionRef() // Ensure a unique collection for the test
+
+    // Add a dummy document to the collection.
+    // A pipeline query with .select against an empty collection might not behave as expected.
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let refDate = Date(timeIntervalSince1970: 1_678_886_400)
+    let refTimestamp = Timestamp(date: refDate)
+
+    let constantsFirst: [Selectable] = [
+      Constant(1).as("number"),
+      Constant("a string").as("string"),
+      Constant(true).as("boolean"),
+      Constant.nil.as("nil"),
+      Constant(GeoPoint(latitude: 0.1, longitude: 0.2)).as("geoPoint"),
+      Constant(refTimestamp).as("timestamp"),
+      Constant(refDate).as("date"), // Firestore will convert this to a Timestamp
+      Constant(Data([1, 2, 3, 4, 5, 6, 7, 0])).as("bytes"),
+      Constant(db.document("foo/bar")).as("documentReference"),
+      Constant(VectorValue([1, 2, 3])).as("vectorValue"),
+    ]
+
+    let constantsSecond: [Selectable] = [
+      MapExpression([
+        "number": 1,
+        "string": "a string",
+        "boolean": true,
+        "nil": Constant.nil,
+        "geoPoint": GeoPoint(latitude: 0.1, longitude: 0.2),
+        "timestamp": refTimestamp,
+        "date": refDate,
+        "bytesArray": Data([1, 2, 3, 4, 5, 6, 7, 0]),
+        "documentReference": Constant(db.document("foo/bar")),
+        "vectorValue": VectorValue([1, 2, 3]),
+        "map": [
+          "number": 2,
+          "string": "b string",
+        ],
+        "array": [1, "c string"],
+      ]).as("map"),
+      ArrayExpression([
+        1000,
+        "another string",
+        false,
+        Constant.nil,
+        GeoPoint(latitude: 10.1, longitude: 20.2),
+        Timestamp(date: Date(timeIntervalSince1970: 1_700_000_000)), // Different timestamp
+        Date(timeIntervalSince1970: 1_700_000_000), // Different date
+        Data([11, 22, 33]),
+        db.document("another/doc"),
+        VectorValue([7, 8, 9]),
+        [
+          "nestedInArrayMapKey": "value",
+          "anotherNestedKey": refTimestamp,
+        ],
+        [2000, "deep nested array string"],
+      ]).as("array"),
+    ]
+
+    let expectedResultsMap: [String: Sendable?] = [
+      "number": 1,
+      "string": "a string",
+      "boolean": true,
+      "nil": nil,
+      "geoPoint": GeoPoint(latitude: 0.1, longitude: 0.2),
+      "timestamp": refTimestamp,
+      "date": refTimestamp, // Dates are converted to Timestamps
+      "bytes": Data([1, 2, 3, 4, 5, 6, 7, 0]),
+      "documentReference": db.document("foo/bar"),
+      "vectorValue": VectorValue([1, 2, 3]),
+      "map": [
+        "number": 1,
+        "string": "a string",
+        "boolean": true,
+        "nil": nil,
+        "geoPoint": GeoPoint(latitude: 0.1, longitude: 0.2),
+        "timestamp": refTimestamp,
+        "date": refTimestamp,
+        "bytesArray": Data([1, 2, 3, 4, 5, 6, 7, 0]),
+        "documentReference": db.document("foo/bar"),
+        "vectorValue": VectorValue([1, 2, 3]),
+        "map": [
+          "number": 2,
+          "string": "b string",
+        ],
+        "array": [1, "c string"],
+      ],
+      "array": [
+        1000,
+        "another string",
+        false,
+        nil,
+        GeoPoint(latitude: 10.1, longitude: 20.2),
+        Timestamp(date: Date(timeIntervalSince1970: 1_700_000_000)),
+        Timestamp(date: Date(timeIntervalSince1970: 1_700_000_000)), // Dates are converted
+        Data([11, 22, 33]),
+        db.document("another/doc"),
+        VectorValue([7, 8, 9]),
+        [
+          "nestedInArrayMapKey": "value",
+          "anotherNestedKey": refTimestamp,
+        ],
+        [2000, "deep nested array string"],
+      ],
+    ]
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(
+        constantsFirst + constantsSecond
+      )
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(pipelineResult: snapshot.results.first!, expected: expectedResultsMap)
+  }
+
+  func testAcceptsAndReturnsNil() async throws {
+    let db = firestore()
+    let randomCol = collectionRef() // Ensure a unique collection for the test
+
+    // Add a dummy document to the collection.
+    // A pipeline query with .select against an empty collection might not behave as expected.
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let constantsFirst: [Selectable] = [
+      Constant.nil.as("nil"),
+    ]
+
+    let expectedResultsMap: [String: Sendable?] = [
+      "nil": nil,
+    ]
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(
+        constantsFirst
+      )
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1)
+    TestHelper.compare(pipelineResult: snapshot.results.first!, expected: expectedResultsMap)
+  }
+
+  func testConvertsArraysAndPlainObjectsToFunctionValues() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs) // Uses existing bookDocs
+    let db = collRef.firestore
+
+    // Expected data for "The Lord of the Rings"
+    let expectedTitle = "The Lord of the Rings"
+    let expectedAuthor = "J.R.R. Tolkien"
+    let expectedGenre = "Fantasy"
+    let expectedPublished = 1954
+    let expectedRating = 4.7
+    let expectedTags = ["adventure", "magic", "epic"]
+    let expectedAwards: [String: Sendable] = ["hugo": false, "nebula": false]
+
+    let metadataArrayElements: [Sendable] = [
+      1,
+      2,
+      expectedGenre,
+      expectedRating * 10,
+      [expectedTitle],
+      ["published": expectedPublished],
+    ]
+
+    let metadataMapElements: [String: Sendable] = [
+      "genre": expectedGenre,
+      "rating": expectedRating * 10,
+      "nestedArray": [expectedTitle],
+      "nestedMap": ["published": expectedPublished],
+    ]
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1) // This should pick "The Lord of the Rings" (rating 4.7)
+      .select(
+        Field("title"),
+        Field("author"),
+        Field("genre"),
+        Field("rating"),
+        Field("published"),
+        Field("tags"),
+        Field("awards")
+      )
+      .addFields(
+        ArrayExpression([
+          1,
+          2,
+          Field("genre"),
+          Field("rating").multiply(10),
+          ArrayExpression([Field("title")]),
+          MapExpression(["published": Field("published")]),
+        ]).as("metadataArray"),
+        MapExpression([
+          "genre": Field("genre"),
+          "rating": Field("rating").multiply(10),
+          "nestedArray": ArrayExpression([Field("title")]),
+          "nestedMap": MapExpression(["published": Field("published")]),
+        ]).as("metadata")
+      )
+      .where(
+        Field("metadataArray").eq(metadataArrayElements) &&
+          Field("metadata").eq(metadataMapElements)
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    if let resultDoc = snapshot.results.first {
+      let expectedFullDoc: [String: Sendable?] = [
+        "title": expectedTitle,
+        "author": expectedAuthor,
+        "genre": expectedGenre,
+        "published": expectedPublished,
+        "rating": expectedRating,
+        "tags": expectedTags,
+        "awards": expectedAwards,
+        "metadataArray": metadataArrayElements,
+        "metadata": metadataMapElements,
+      ]
+
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedFullDoc)
+    } else {
+      XCTFail("No document retrieved")
+    }
+  }
+
+  func testSupportsAggregate() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    var pipeline = db.pipeline()
+      .collection(collRef.path)
+      .aggregate(CountAll().as("count"))
+    var snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Count all should return a single aggregate document")
+    if let result = snapshot.results.first {
+      TestHelper.compare(pipelineResult: result, expected: ["count": bookDocs.count])
+    } else {
+      XCTFail("No result for count all aggregation")
+    }
+
+    pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("genre").eq("Science Fiction"))
+      .aggregate(
+        CountAll().as("count"),
+        Field("rating").avg().as("avgRating"),
+        Field("rating").maximum().as("maxRating")
+      )
+    snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Filtered aggregate should return a single document")
+    if let result = snapshot.results.first {
+      let expectedAggValues: [String: Sendable] = [
+        "count": 2,
+        "avgRating": 4.4,
+        "maxRating": 4.6,
+      ]
+      TestHelper.compare(pipelineResult: result, expected: expectedAggValues)
+    } else {
+      XCTFail("No result for filtered aggregation")
+    }
+  }
+
+  func testRejectsGroupsWithoutAccumulators() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let dummyDocRef = collRef.document("dummyDocForRejectTest")
+    try await dummyDocRef.setData(["field": "value"])
+
+    do {
+      _ = try await db.pipeline()
+        .collection(collRef.path)
+        .where(Field("published").lt(1900))
+        .aggregate([], groups: ["genre"])
+        .execute()
+
+      XCTFail(
+        "The pipeline should have thrown an error for groups without accumulators, but it did not."
+      )
+
+    } catch {
+      XCTAssert(true, "Successfully caught expected error for groups without accumulators.")
+    }
+  }
+
+  func testReturnsGroupAndAccumulateResults() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("published").lt(1984))
+      .aggregate(
+        [Field("rating").avg().as("avgRating")],
+        groups: ["genre"]
+      )
+      .where(Field("avgRating").gt(4.3))
+      .sort(Field("avgRating").descending())
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(
+      snapshot.results.count,
+      3,
+      "Should return 3 documents after grouping and filtering."
+    )
+
+    let expectedResultsArray: [[String: Sendable]] = [
+      ["avgRating": 4.7, "genre": "Fantasy"],
+      ["avgRating": 4.5, "genre": "Romance"],
+      ["avgRating": 4.4, "genre": "Science Fiction"],
+    ]
+
+    TestHelper
+      .compare(pipelineSnapshot: snapshot, expected: expectedResultsArray, enforceOrder: true)
+  }
+
+  func testReturnsMinMaxCountAndCountAllAccumulations() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .aggregate(
+        Field("cost").count().as("booksWithCost"),
+        CountAll().as("count"),
+        Field("rating").maximum().as("maxRating"),
+        Field("published").minimum().as("minPublished")
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Aggregate should return a single document")
+
+    let expectedValues: [String: Sendable] = [
+      "booksWithCost": 1,
+      "count": bookDocs.count,
+      "maxRating": 4.7,
+      "minPublished": 1813,
+    ]
+
+    if let result = snapshot.results.first {
+      TestHelper.compare(pipelineResult: result, expected: expectedValues)
+    } else {
+      XCTFail("No result for min/max/count/countAll aggregation")
+    }
+  }
+
+  func testReturnsCountIfAccumulation() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let expectedCount = 3
+    let expectedResults: [String: Sendable] = ["count": expectedCount]
+    let condition = Field("rating").gt(4.3)
+
+    var pipeline = db.pipeline()
+      .collection(collRef.path)
+      .aggregate(condition.countIf().as("count"))
+    var snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "countIf aggregate should return a single document")
+    if let result = snapshot.results.first {
+      TestHelper.compare(pipelineResult: result, expected: expectedResults)
+    } else {
+      XCTFail("No result for countIf aggregation")
+    }
+  }
+
+  func testDistinctStage() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .distinct(Field("genre"), Field("author"))
+      .sort(Field("genre").ascending(), Field("author").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["genre": "Dystopian", "author": "George Orwell"],
+      ["genre": "Dystopian", "author": "Margaret Atwood"],
+      ["genre": "Fantasy", "author": "J.R.R. Tolkien"],
+      ["genre": "Magical Realism", "author": "Gabriel García Márquez"],
+      ["genre": "Modernist", "author": "F. Scott Fitzgerald"],
+      ["genre": "Psychological Thriller", "author": "Fyodor Dostoevsky"],
+      ["genre": "Romance", "author": "Jane Austen"],
+      ["genre": "Science Fiction", "author": "Douglas Adams"],
+      ["genre": "Science Fiction", "author": "Frank Herbert"],
+      ["genre": "Southern Gothic", "author": "Harper Lee"],
+    ]
+
+    XCTAssertEqual(snapshot.results.count, expectedResults.count, "Snapshot results count mismatch")
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testSelectStage() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(Field("title"), Field("author"))
+      .sort(Field("author").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy", "author": "Douglas Adams"],
+      ["title": "The Great Gatsby", "author": "F. Scott Fitzgerald"],
+      ["title": "Dune", "author": "Frank Herbert"],
+      ["title": "Crime and Punishment", "author": "Fyodor Dostoevsky"],
+      ["title": "One Hundred Years of Solitude", "author": "Gabriel García Márquez"],
+      ["title": "1984", "author": "George Orwell"],
+      ["title": "To Kill a Mockingbird", "author": "Harper Lee"],
+      ["title": "The Lord of the Rings", "author": "J.R.R. Tolkien"],
+      ["title": "Pride and Prejudice", "author": "Jane Austen"],
+      ["title": "The Handmaid's Tale", "author": "Margaret Atwood"],
+    ]
+
+    XCTAssertEqual(
+      snapshot.results.count,
+      expectedResults.count,
+      "Snapshot results count mismatch for select stage."
+    )
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testAddFieldStage() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(Field("title"), Field("author"))
+      .addFields(Constant("bar").as("foo"))
+      .sort(Field("author").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy", "author": "Douglas Adams", "foo": "bar"],
+      ["title": "The Great Gatsby", "author": "F. Scott Fitzgerald", "foo": "bar"],
+      ["title": "Dune", "author": "Frank Herbert", "foo": "bar"],
+      ["title": "Crime and Punishment", "author": "Fyodor Dostoevsky", "foo": "bar"],
+      ["title": "One Hundred Years of Solitude", "author": "Gabriel García Márquez", "foo": "bar"],
+      ["title": "1984", "author": "George Orwell", "foo": "bar"],
+      ["title": "To Kill a Mockingbird", "author": "Harper Lee", "foo": "bar"],
+      ["title": "The Lord of the Rings", "author": "J.R.R. Tolkien", "foo": "bar"],
+      ["title": "Pride and Prejudice", "author": "Jane Austen", "foo": "bar"],
+      ["title": "The Handmaid's Tale", "author": "Margaret Atwood", "foo": "bar"],
+    ]
+
+    XCTAssertEqual(
+      snapshot.results.count,
+      expectedResults.count,
+      "Snapshot results count mismatch for addField stage."
+    )
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testRemoveFieldsStage() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(Field("title"), Field("author"))
+      .sort(Field("author").ascending()) // Sort before removing the 'author' field
+      .removeFields(Field("author"))
+
+    let snapshot = try await pipeline.execute()
+
+    // Expected results are sorted by author, but only contain the title
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy"], // Douglas Adams
+      ["title": "The Great Gatsby"], // F. Scott Fitzgerald
+      ["title": "Dune"], // Frank Herbert
+      ["title": "Crime and Punishment"], // Fyodor Dostoevsky
+      ["title": "One Hundred Years of Solitude"], // Gabriel García Márquez
+      ["title": "1984"], // George Orwell
+      ["title": "To Kill a Mockingbird"], // Harper Lee
+      ["title": "The Lord of the Rings"], // J.R.R. Tolkien
+      ["title": "Pride and Prejudice"], // Jane Austen
+      ["title": "The Handmaid's Tale"], // Margaret Atwood
+    ]
+
+    XCTAssertEqual(
+      snapshot.results.count,
+      expectedResults.count,
+      "Snapshot results count mismatch for removeFields stage."
+    )
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testWhereStageWithAndConditions() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    // Test Case 1: Two AND conditions
+    var pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("rating").gt(4.5)
+        && Field("genre").eqAny(["Science Fiction", "Romance", "Fantasy"]))
+    var snapshot = try await pipeline.execute()
+    var expectedIDs = ["book10", "book4"] // Dune (SF, 4.6), LOTR (Fantasy, 4.7)
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedIDs: expectedIDs, enforceOrder: false)
+
+    // Test Case 2: Three AND conditions
+    pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(
+        Field("rating").gt(4.5)
+          && Field("genre").eqAny(["Science Fiction", "Romance", "Fantasy"])
+          && Field("published").lt(1965)
+      )
+    snapshot = try await pipeline.execute()
+    expectedIDs = ["book4"] // LOTR (Fantasy, 4.7, published 1954)
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedIDs: expectedIDs, enforceOrder: false)
+  }
+
+  func testWhereStageWithOrAndXorConditions() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    // Test Case 1: OR conditions
+    var pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(
+        Field("genre").eq("Romance")
+          || Field("genre").eq("Dystopian")
+          || Field("genre").eq("Fantasy")
+      )
+      .select(Field("title"))
+      .sort(Field("title").ascending())
+
+    var snapshot = try await pipeline.execute()
+    var expectedResults: [[String: Sendable]] = [
+      ["title": "1984"], // Dystopian
+      ["title": "Pride and Prejudice"], // Romance
+      ["title": "The Handmaid's Tale"], // Dystopian
+      ["title": "The Lord of the Rings"], // Fantasy
+    ]
+
+    XCTAssertEqual(
+      snapshot.results.count,
+      expectedResults.count,
+      "Snapshot results count mismatch for OR conditions."
+    )
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+
+    // Test Case 2: XOR conditions
+    // XOR is true if an odd number of its arguments are true.
+    pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(
+        Field("genre").eq("Romance") // Book2 (T), Book5 (F), Book4 (F), Book8 (F)
+          ^ Field("genre").eq("Dystopian") // Book2 (F), Book5 (T), Book4 (F), Book8 (T)
+          ^ Field("genre").eq("Fantasy") // Book2 (F), Book5 (F), Book4 (T), Book8 (F)
+          ^ Field("published").eq(1949) // Book2 (F), Book5 (F), Book4 (F), Book8 (T)
+      )
+      .select(Field("title"))
+      .sort(Field("title").ascending())
+
+    snapshot = try await pipeline.execute()
+
+    expectedResults = [
+      ["title": "Pride and Prejudice"],
+      ["title": "The Handmaid's Tale"],
+      ["title": "The Lord of the Rings"],
+    ]
+
+    XCTAssertEqual(
+      snapshot.results.count,
+      expectedResults.count,
+      "Snapshot results count mismatch for XOR conditions."
+    )
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testSortOffsetAndLimitStages() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("author").ascending())
+      .offset(5)
+      .limit(3)
+      .select("title", "author")
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "1984", "author": "George Orwell"],
+      ["title": "To Kill a Mockingbird", "author": "Harper Lee"],
+      ["title": "The Lord of the Rings", "author": "J.R.R. Tolkien"],
+    ]
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  // MARK: - Generic Stage Tests
+
+  func testRawStageSelectFields() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let expectedSelectedData: [String: Sendable] = [
+      "title": "1984",
+      "metadata": ["author": "George Orwell"],
+    ]
+
+    let selectParameters: [Sendable] =
+      [
+        [
+          "title": Field("title"),
+          "metadata": ["author": Field("author")],
+        ],
+      ]
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .rawStage(name: "select", params: selectParameters)
+      .sort(Field("title").ascending())
+      .limit(1)
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [expectedSelectedData],
+      enforceOrder: true
+    )
+  }
+
+  func testCanAddFields() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("author").ascending())
+      .limit(1)
+      .select("title", "author")
+      .rawStage(
+        name: "add_fields",
+        params: [
+          [
+            "display": Field("title").strConcat(
+              Constant(" - "),
+              Field("author")
+            ),
+          ],
+        ]
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        [
+          "title": "The Hitchhiker's Guide to the Galaxy",
+          "author": "Douglas Adams",
+          "display": "The Hitchhiker's Guide to the Galaxy - Douglas Adams",
+        ],
+      ],
+      enforceOrder: false
+    )
+  }
+
+  func testCanPerformDistinctQuery() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select("title", "author", "rating")
+      .rawStage(
+        name: "distinct",
+        params: [
+          ["rating": Field("rating")],
+        ]
+      )
+      .sort(Field("rating").descending())
+
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        ["rating": 4.7],
+        ["rating": 4.6],
+        ["rating": 4.5],
+        ["rating": 4.3],
+        ["rating": 4.2],
+        ["rating": 4.1],
+        ["rating": 4.0],
+      ],
+      enforceOrder: true
+    )
+  }
+
+  func testCanPerformAggregateQuery() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let emptySendableDictionary: [String: Sendable?] = [:]
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select("title", "author", "rating")
+      .rawStage(
+        name: "aggregate",
+        params: [
+          [
+            "averageRating": Field("rating").avg(),
+          ],
+          emptySendableDictionary,
+        ]
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        [
+          "averageRating": 4.3100000000000005,
+        ],
+      ],
+      enforceOrder: true
+    )
+  }
+
+  func testCanFilterWithWhere() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select("title", "author")
+      .rawStage(
+        name: "where",
+        params: [Field("author").eq("Douglas Adams")]
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        [
+          "title": "The Hitchhiker's Guide to the Galaxy",
+          "author": "Douglas Adams",
+        ],
+      ],
+      enforceOrder: false
+    )
+  }
+
+  func testCanLimitOffsetAndSort() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select("title", "author")
+      .rawStage(
+        name: "sort",
+        params: [
+          [
+            "direction": "ascending",
+            "expression": Field("author"),
+          ],
+        ]
+      )
+      .rawStage(name: "offset", params: [3])
+      .rawStage(name: "limit", params: [1])
+
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        [
+          "author": "Fyodor Dostoevsky",
+          "title": "Crime and Punishment",
+        ],
+      ],
+      enforceOrder: false
+    )
+  }
+
+  // MARK: - Replace Stage Test
+
+  func testReplaceStagePromoteAwardsAndAddFlag() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("The Hitchhiker's Guide to the Galaxy"))
+      .replace(with: "awards")
+
+    let snapshot = try await pipeline.execute()
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedCount: 1)
+
+    let expectedBook1Transformed: [String: Sendable?] = [
+      "hugo": true,
+      "nebula": false,
+      "others": ["unknown": ["year": 1980]],
+    ]
+
+    TestHelper
+      .compare(
+        pipelineSnapshot: snapshot,
+        expected: [expectedBook1Transformed],
+        enforceOrder: false
+      )
+  }
+
+  func testReplaceWithExprResult() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("The Hitchhiker's Guide to the Galaxy"))
+      .replace(with:
+        MapExpression([
+          "foo": "bar",
+          "baz": MapExpression([
+            "title": Field("title"),
+          ]),
+        ]))
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [String: Sendable?] = [
+      "foo": "bar",
+      "baz": ["title": "The Hitchhiker's Guide to the Galaxy"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: [expectedResults], enforceOrder: false)
+  }
+
+  // MARK: - Sample Stage Tests
+
+  func testSampleStageLimit3() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sample(count: 3)
+
+    let snapshot = try await pipeline.execute()
+
+    TestHelper
+      .compare(pipelineSnapshot: snapshot, expectedCount: 3)
+  }
+
+  func testSampleStageLimitPercentage60Average() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    var avgSize = 0.0
+    let numIterations = 20
+    for _ in 0 ..< numIterations {
+      let snapshot = try await db
+        .pipeline()
+        .collection(collRef.path)
+        .sample(percentage: 0.6)
+        .execute()
+      avgSize += Double(snapshot.results.count)
+    }
+    avgSize /= Double(numIterations)
+    XCTAssertEqual(avgSize, 6.0, accuracy: 1.0, "Average size should be close to 6")
+  }
+
+  // MARK: - Union Stage Test
+
+  func testUnionStageCombineAuthors() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .union(db.pipeline()
+        .collection(collRef.path))
+      .sort(Field(FieldPath.documentID()).ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let books = [
+      "book1",
+      "book1",
+      "book10",
+      "book10",
+      "book2",
+      "book2",
+      "book3",
+      "book3",
+      "book4",
+      "book4",
+      "book5",
+      "book5",
+      "book6",
+      "book6",
+      "book7",
+      "book7",
+      "book8",
+      "book8",
+      "book9",
+      "book9",
+    ]
+    TestHelper.compare(pipelineSnapshot: snapshot, expectedIDs: books, enforceOrder: false)
+  }
+
+  func testUnnestStage() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("The Hitchhiker's Guide to the Galaxy"))
+      .unnest(Field("tags").as("tag"), indexField: "tagsIndex")
+      .select(
+        "title",
+        "author",
+        "genre",
+        "published",
+        "rating",
+        "tags",
+        "tag",
+        "awards",
+        "nestedField"
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable?]] = [
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "author": "Douglas Adams",
+        "genre": "Science Fiction",
+        "published": 1979,
+        "rating": 4.2,
+        "tags": ["comedy", "space", "adventure"],
+        "tag": "comedy",
+        "awards": ["hugo": true, "nebula": false, "others": ["unknown": ["year": 1980]]],
+        "nestedField": ["level.1": ["level.2": true]],
+      ],
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "author": "Douglas Adams",
+        "genre": "Science Fiction",
+        "published": 1979,
+        "rating": 4.2,
+        "tags": ["comedy", "space", "adventure"],
+        "tag": "space",
+        "awards": ["hugo": true, "nebula": false, "others": ["unknown": ["year": 1980]]],
+        "nestedField": ["level.1": ["level.2": true]],
+      ],
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "author": "Douglas Adams",
+        "genre": "Science Fiction",
+        "published": 1979,
+        "rating": 4.2,
+        "tags": ["comedy", "space", "adventure"],
+        "tag": "adventure",
+        "awards": ["hugo": true, "nebula": false, "others": ["unknown": ["year": 1980]]],
+        "nestedField": ["level.1": ["level.2": true]],
+      ],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: false)
+  }
+
+  func testUnnestExpr() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("The Hitchhiker's Guide to the Galaxy"))
+      .unnest(ArrayExpression([1, 2, 3]).as("copy"))
+      .select(
+        "title",
+        "author",
+        "genre",
+        "published",
+        "rating",
+        "tags",
+        "copy",
+        "awards",
+        "nestedField"
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable?]] = [
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "author": "Douglas Adams",
+        "genre": "Science Fiction",
+        "published": 1979,
+        "rating": 4.2,
+        "tags": ["comedy", "space", "adventure"],
+        "copy": 1,
+        "awards": ["hugo": true, "nebula": false, "others": ["unknown": ["year": 1980]]],
+        "nestedField": ["level.1": ["level.2": true]],
+      ],
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "author": "Douglas Adams",
+        "genre": "Science Fiction",
+        "published": 1979,
+        "rating": 4.2,
+        "tags": ["comedy", "space", "adventure"],
+        "copy": 2,
+        "awards": ["hugo": true, "nebula": false, "others": ["unknown": ["year": 1980]]],
+        "nestedField": ["level.1": ["level.2": true]],
+      ],
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "author": "Douglas Adams",
+        "genre": "Science Fiction",
+        "published": 1979,
+        "rating": 4.2,
+        "tags": ["comedy", "space", "adventure"],
+        "copy": 3,
+        "awards": ["hugo": true, "nebula": false, "others": ["unknown": ["year": 1980]]],
+        "nestedField": ["level.1": ["level.2": true]],
+      ],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: false)
+  }
+
+  func testFindNearest() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let measures: [DistanceMeasure] = [.euclidean, .dotProduct, .cosine]
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+      ["title": "One Hundred Years of Solitude"],
+      ["title": "The Handmaid's Tale"],
+    ]
+
+    for measure in measures {
+      let pipeline = db.pipeline()
+        .collection(collRef.path)
+        .findNearest(
+          field: Field("embedding"),
+          vectorValue: [10, 1, 3, 1, 2, 1, 1, 1, 1, 1],
+          distanceMeasure: measure, limit: 3
+        )
+        .select("title")
+      let snapshot = try await pipeline.execute()
+      TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+    }
+  }
+
+  func testFindNearestWithDistance() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let expectedResults: [[String: Sendable]] = [
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "computedDistance": 1.0,
+      ],
+      [
+        "title": "One Hundred Years of Solitude",
+        "computedDistance": 12.041594578792296,
+      ],
+    ]
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .findNearest(
+        field: Field("embedding"),
+        vectorValue: [10, 1, 2, 1, 1, 1, 1, 1, 1, 1],
+        distanceMeasure: .euclidean, limit: 2,
+        distanceField: "computedDistance"
+      )
+      .select("title", "computedDistance")
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: false)
+  }
+
+  func testLogicalMaxWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(
+        Field("title"),
+        Field("published").logicalMaximum(Constant(1960), 1961).as("published-safe")
+      )
+      .sort(Field("title").ascending())
+      .limit(3)
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "1984", "published-safe": 1961],
+      ["title": "Crime and Punishment", "published-safe": 1961],
+      ["title": "Dune", "published-safe": 1965],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testLogicalMinWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(
+        Field("title"),
+        Field("published").logicalMinimum(Constant(1960), 1961).as("published-safe")
+      )
+      .sort(Field("title").ascending())
+      .limit(3)
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "1984", "published-safe": 1949],
+      ["title": "Crime and Punishment", "published-safe": 1866],
+      ["title": "Dune", "published-safe": 1960],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testCondWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(
+        Field("title"),
+        Field("published").lt(1960).then(Constant(1960), else: Field("published"))
+          .as("published-safe")
+      )
+      .sort(Field("title").ascending())
+      .limit(3)
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "1984", "published-safe": 1960],
+      ["title": "Crime and Punishment", "published-safe": 1960],
+      ["title": "Dune", "published-safe": 1965],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testEqAnyWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("published").eqAny([1979, 1999, 1967]))
+      .sort(Field("title").descending())
+      .select("title")
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+      ["title": "One Hundred Years of Solitude"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testNotEqAnyWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("published").notEqAny([1965, 1925, 1949, 1960, 1866, 1985, 1954, 1967, 1979]))
+      .select("title")
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "Pride and Prejudice"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: false)
+  }
+
+  func testArrayContainsWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("tags").arrayContains("comedy"))
+      .select("title")
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: false)
+  }
+
+  func testArrayContainsAnyWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("tags").arrayContainsAny(["comedy", "classic"]))
+      .sort(Field("title").descending())
+      .select("title")
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+      ["title": "Pride and Prejudice"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testArrayContainsAllWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("tags").arrayContainsAll(["adventure", "magic"]))
+      .select("title")
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Lord of the Rings"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: false)
+  }
+
+  func testArrayLengthWorks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(Field("tags").arrayLength().as("tagsCount"))
+      .where(Field("tagsCount").eq(3))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 10)
+  }
+
+  func testStrConcat() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("author").ascending())
+      .select(Field("author").strConcat(Constant(" - "), Field("title")).as("bookInfo"))
+      .limit(1)
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["bookInfo": "Douglas Adams - The Hitchhiker's Guide to the Galaxy"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testStartsWith() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").startsWith("The"))
+      .select("title")
+      .sort(Field("title").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Great Gatsby"],
+      ["title": "The Handmaid's Tale"],
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+      ["title": "The Lord of the Rings"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testEndsWith() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").endsWith("y"))
+      .select("title")
+      .sort(Field("title").descending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+      ["title": "The Great Gatsby"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testStrContains() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").strContains("'s"))
+      .select("title")
+      .sort(Field("title").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Handmaid's Tale"],
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testCharLength() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select(
+        Field("title").charLength().as("titleLength"),
+        Field("title")
+      )
+      .where(Field("titleLength").gt(20))
+      .sort(Field("title").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["titleLength": 29, "title": "One Hundred Years of Solitude"],
+      ["titleLength": 36, "title": "The Hitchhiker's Guide to the Galaxy"],
+      ["titleLength": 21, "title": "The Lord of the Rings"],
+      ["titleLength": 21, "title": "To Kill a Mockingbird"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testLike() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").like("%Guide%"))
+      .select("title")
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: false)
+  }
+
+  func testRegexContains() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").regexContains("(?i)(the|of)"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 5)
+  }
+
+  func testRegexMatches() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").regexMatch(".*(?i)(the|of).*"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 5)
+  }
+
+  func testArithmeticOperations() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("To Kill a Mockingbird"))
+      .select(
+        Field("rating").add(1).as("ratingPlusOne"),
+        Field("published").subtract(1900).as("yearsSince1900"),
+        Field("rating").multiply(10).as("ratingTimesTen"),
+        Field("rating").divide(2).as("ratingDividedByTwo"),
+        Field("rating").multiply(20).as("ratingTimes20"),
+        Field("rating").add(3).as("ratingPlus3"),
+        Field("rating").mod(2).as("ratingMod2")
+      )
+      .limit(1)
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    if let resultDoc = snapshot.results.first {
+      let expectedResults: [String: Sendable?] = [
+        "ratingPlusOne": 5.2,
+        "yearsSince1900": 60,
+        "ratingTimesTen": 42.0,
+        "ratingDividedByTwo": 2.1,
+        "ratingTimes20": 84.0,
+        "ratingPlus3": 7.2,
+        "ratingMod2": 0.20000000000000018,
+      ]
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for arithmetic operations test")
+    }
+  }
+
+  func testComparisonOperators() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(
+        Field("rating").gt(4.2) &&
+          Field("rating").lte(4.5) &&
+          Field("genre").neq("Science Fiction")
+      )
+      .select("rating", "title")
+      .sort(Field("title").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["rating": 4.3, "title": "Crime and Punishment"],
+      ["rating": 4.3, "title": "One Hundred Years of Solitude"],
+      ["rating": 4.5, "title": "Pride and Prejudice"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testLogicalOperators() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(
+        (Field("rating").gt(4.5) && Field("genre").eq("Science Fiction")) ||
+          Field("published").lt(1900)
+      )
+      .select("title")
+      .sort(Field("title").ascending())
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable]] = [
+      ["title": "Crime and Punishment"],
+      ["title": "Dune"],
+      ["title": "Pride and Prejudice"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testChecks() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    // Part 1
+    var pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(
+        Field("rating").isNull().as("ratingIsNull"),
+        Field("rating").isNan().as("ratingIsNaN"),
+        Field("title").arrayGet(0).isError().as("isError"),
+        Field("title").arrayGet(0).ifError(Constant("was error")).as("ifError"),
+        Field("foo").isAbsent().as("isAbsent"),
+        Field("title").isNotNull().as("titleIsNotNull"),
+        Field("cost").isNotNan().as("costIsNotNan"),
+        Field("fooBarBaz").exists().as("fooBarBazExists"),
+        Field("title").exists().as("titleExists")
+      )
+
+    var snapshot = try await pipeline.execute()
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document for checks part 1")
+
+    if let resultDoc = snapshot.results.first {
+      let expectedResults: [String: Sendable?] = [
+        "ratingIsNull": false,
+        "ratingIsNaN": false,
+        "isError": true,
+        "ifError": "was error",
+        "isAbsent": true,
+        "titleIsNotNull": true,
+        "costIsNotNan": false,
+        "fooBarBazExists": false,
+        "titleExists": true,
+      ]
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for checks part 1")
+    }
+
+    // Part 2
+    pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(
+        Field("rating").isNull().as("ratingIsNull"),
+        Field("rating").isNan().as("ratingIsNaN"),
+        Field("title").arrayGet(0).isError().as("isError"),
+        Field("title").arrayGet(0).ifError(Constant("was error")).as("ifError"),
+        Field("foo").isAbsent().as("isAbsent"),
+        Field("title").isNotNull().as("titleIsNotNull"),
+        Field("cost").isNotNan().as("costIsNotNan")
+      )
+
+    snapshot = try await pipeline.execute()
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document for checks part 2")
+
+    if let resultDoc = snapshot.results.first {
+      let expectedResults: [String: Sendable?] = [
+        "ratingIsNull": false,
+        "ratingIsNaN": false,
+        "isError": true,
+        "ifError": "was error",
+        "isAbsent": true,
+        "titleIsNotNull": true,
+        "costIsNotNan": false,
+      ]
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for checks part 2")
+    }
+  }
+
+  func testMapGet() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("published").descending())
+      .select(
+        Field("awards").mapGet("hugo").as("hugoAward"),
+        Field("awards").mapGet("others").as("others"),
+        Field("title")
+      )
+      .where(Field("hugoAward").eq(true))
+
+    let snapshot = try await pipeline.execute()
+
+    // Expected results are ordered by "published" descending for those with hugoAward == true
+    // 1. The Hitchhiker's Guide to the Galaxy (1979)
+    // 2. Dune (1965)
+    let expectedResults: [[String: Sendable?]] = [
+      [
+        "hugoAward": true,
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "others": ["unknown": ["year": 1980]],
+      ],
+      [
+        "hugoAward": true,
+        "title": "Dune",
+        "others": nil,
+      ],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testDistanceFunctions() async throws {
+    let db = firestore()
+    let randomCol = collectionRef() // Ensure a unique collection for the test
+    // Add a dummy document to the collection for the select stage to operate on.
+    try await randomCol.document("dummyDocForDistanceTest").setData(["field": "value"])
+
+    let sourceVector: [Double] = [0.1, 0.1]
+    let targetVector: [Double] = [0.5, 0.8]
+    let targetVectorValue = VectorValue(targetVector)
+
+    let expectedCosineDistance = 0.02560880430538015
+    let expectedDotProductDistance = 0.13
+    let expectedEuclideanDistance = 0.806225774829855
+    let accuracy = 0.000000000000001 // Define a suitable accuracy for floating-point comparisons
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .select(
+        Constant(VectorValue(sourceVector)).cosineDistance(targetVectorValue).as("cosineDistance"),
+        Constant(VectorValue(sourceVector)).dotProduct(targetVectorValue).as("dotProductDistance"),
+        Constant(VectorValue(sourceVector)).euclideanDistance(targetVectorValue)
+          .as("euclideanDistance")
+      )
+      .limit(1)
+
+    let snapshot = try await pipeline.execute()
+    XCTAssertEqual(
+      snapshot.results.count,
+      1,
+      "Should retrieve one document for distance functions part 1"
+    )
+
+    if let resultDoc = snapshot.results.first {
+      XCTAssertEqual(
+        resultDoc.get("cosineDistance")! as! Double,
+        expectedCosineDistance,
+        accuracy: accuracy
+      )
+      XCTAssertEqual(
+        resultDoc.get("dotProductDistance")! as! Double,
+        expectedDotProductDistance,
+        accuracy: accuracy
+      )
+      XCTAssertEqual(
+        resultDoc.get("euclideanDistance")! as! Double,
+        expectedEuclideanDistance,
+        accuracy: accuracy
+      )
+    } else {
+      XCTFail("No document retrieved for distance functions part 1")
+    }
+  }
+
+  func testVectorLength() async throws {
+    let collRef = collectionRef() // Using a new collection for this test
+    let db = collRef.firestore
+    let docRef = collRef.document("vectorDocForLengthTestFinal")
+
+    // Add a document with a known vector field
+    try await docRef.setData(["embedding": VectorValue([1.0, 2.0, 3.0])])
+
+    // Construct a pipeline query
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .limit(1) // Limit to the document we just added
+      .select(Field("embedding").vectorLength().as("vectorLength"))
+
+    // Execute the pipeline
+    let snapshot = try await pipeline.execute()
+
+    // Assert that the vectorLength in the result is 3
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+    if let resultDoc = snapshot.results.first {
+      let expectedResult: [String: Sendable?] = ["vectorLength": 3]
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResult)
+    } else {
+      XCTFail("No document retrieved for vectorLength test")
+    }
+  }
+
+  func testNestedFields() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("awards.hugo").eq(true))
+      .sort(Field("title").descending())
+      .select(Field("title"), Field("awards.hugo"))
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [[String: Sendable?]] = [
+      ["title": "The Hitchhiker's Guide to the Galaxy", "awards.hugo": true],
+      ["title": "Dune", "awards.hugo": true],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testMapGetWithFieldNameIncludingDotNotation() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("awards.hugo").eq(true)) // Filters to book1 and book10
+      .select(
+        Field("title"),
+        Field("nestedField.level.1"),
+        Field("nestedField").mapGet("level.1").mapGet("level.2").as("nested")
+      )
+      .sort(Field("title").descending())
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 2, "Should retrieve two documents")
+
+    let expectedResultsArray: [[String: Sendable?]] = [
+      [
+        "title": "The Hitchhiker's Guide to the Galaxy",
+        "nestedField.level.`1`": nil,
+        "nested": true,
+      ],
+      [
+        "title": "Dune",
+        "nestedField.level.`1`": nil,
+        "nested": nil,
+      ],
+    ]
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: expectedResultsArray,
+      enforceOrder: true
+    )
+  }
+
+  func testGenericFunctionAddSelectable() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(
+        FunctionExpr("add", [Field("rating"), Constant(1)]).as(
+          "rating"
+        )
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    let expectedResult: [String: Sendable?] = [
+      "rating": 5.7,
+    ]
+
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResult)
+    } else {
+      XCTFail("No document retrieved for testGenericFunctionAddSelectable")
+    }
+  }
+
+  func testGenericFunctionAndVariadicSelectable() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(
+        BooleanExpr("and", [Field("rating").gt(0),
+                            Field("title").charLength().lt(5),
+                            Field("tags").arrayContains("propaganda")])
+      )
+      .select("title")
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    let expectedResult: [[String: Sendable?]] = [
+      ["title": "1984"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResult, enforceOrder: false)
+  }
+
+  func testGenericFunctionArrayContainsAny() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(BooleanExpr("array_contains_any", [Field("tags"), ArrayExpression(["politics"])]))
+      .select(Field("title"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    let expectedResult: [[String: Sendable?]] = [
+      ["title": "Dune"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResult, enforceOrder: false)
+  }
+
+  func testGenericFunctionCountIfAggregate() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .aggregate(AggregateFunction("count_if", [Field("rating").gte(4.5)]).as("countOfBest"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Aggregate should return a single document")
+
+    let expectedResult: [String: Sendable?] = [
+      "countOfBest": 3,
+    ]
+
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResult)
+    } else {
+      XCTFail("No document retrieved for testGenericFunctionCountIfAggregate")
+    }
+  }
+
+  func testGenericFunctionSortByCharLen() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(
+        FunctionExpr("char_length", [Field("title")]).ascending(),
+        Field("__name__").descending()
+      )
+      .limit(3)
+      .select(Field("title"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 3, "Should retrieve three documents")
+
+    let expectedResults: [[String: Sendable?]] = [
+      ["title": "1984"],
+      ["title": "Dune"],
+      ["title": "The Great Gatsby"],
+    ]
+
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: expectedResults, enforceOrder: true)
+  }
+
+  func testSupportsRand() async throws {
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .limit(10)
+      .select(RandomExpr().as("result"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 10, "Should fetch 10 documents")
+
+    for doc in snapshot.results {
+      guard let resultValue = doc.get("result") else {
+        XCTFail("Document \(doc.id ?? "unknown") should have a 'result' field")
+        continue
+      }
+      guard let doubleValue = resultValue as? Double else {
+        XCTFail("Result value for document \(doc.id ?? "unknown") is not a Double: \(resultValue)")
+        continue
+      }
+      XCTAssertGreaterThanOrEqual(
+        doubleValue,
+        0.0,
+        "Result for \(doc.id ?? "unknown") should be >= 0.0"
+      )
+      XCTAssertLessThan(doubleValue, 1.0, "Result for \(doc.id ?? "unknown") should be < 1.0")
+    }
+  }
+
+  func testSupportsArray() async throws {
+    let db = firestore()
+    let collRef = collectionRef(withDocuments: bookDocs)
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(ArrayExpression([1, 2, 3, 4]).as("metadata"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    let expectedResults: [String: Sendable?] = ["metadata": [1, 2, 3, 4]]
+
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for testSupportsArray")
+    }
+  }
+
+  func testEvaluatesExpressionInArray() async throws {
+    let db = firestore()
+    let collRef = collectionRef(withDocuments: bookDocs)
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(ArrayExpression([
+        1,
+        2,
+        Field("genre"),
+        Field("rating").multiply(10),
+      ]).as("metadata"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    let expectedResults: [String: Sendable?] = ["metadata": [1, 2, "Fantasy", 47.0]]
+
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for testEvaluatesExpressionInArray")
+    }
+  }
+
+  func testSupportsArrayOffset() async throws {
+    let db = firestore()
+    let collRef = collectionRef(withDocuments: bookDocs)
+
+    let expectedResultsPart1: [[String: Sendable?]] = [
+      ["firstTag": "adventure"],
+      ["firstTag": "politics"],
+      ["firstTag": "classic"],
+    ]
+
+    let pipeline1 = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(3)
+      .select(Field("tags").arrayGet(0).as("firstTag"))
+
+    let snapshot1 = try await pipeline1.execute()
+    XCTAssertEqual(snapshot1.results.count, 3, "Part 1: Should retrieve three documents")
+    TestHelper.compare(
+      pipelineSnapshot: snapshot1,
+      expected: expectedResultsPart1,
+      enforceOrder: true
+    )
+  }
+
+  func testSupportsMap() async throws {
+    let db = firestore()
+    let collRef = collectionRef(withDocuments: bookDocs)
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(MapExpression(["foo": "bar"]).as("metadata"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    let expectedResult: [String: Sendable?] = ["metadata": ["foo": "bar"]]
+
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResult)
+    } else {
+      XCTFail("No document retrieved for testSupportsMap")
+    }
+  }
+
+  func testEvaluatesExpressionInMap() async throws {
+    let db = firestore()
+    let collRef = collectionRef(withDocuments: bookDocs)
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(MapExpression([
+        "genre": Field("genre"), // "Fantasy"
+        "rating": Field("rating").multiply(10), // 4.7 * 10 = 47.0
+      ]).as("metadata"))
+
+    let snapshot = try await pipeline.execute()
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+
+    // Expected: genre is "Fantasy", rating is 4.7 for book4
+    let expectedResult: [String: Sendable?] = ["metadata": ["genre": "Fantasy", "rating": 47.0]]
+
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResult)
+    } else {
+      XCTFail("No document retrieved for testEvaluatesExpressionInMap")
+    }
+  }
+
+  func testSupportsMapRemove() async throws {
+    let db = firestore()
+    let collRef = collectionRef(withDocuments: bookDocs)
+
+    let expectedResult: [String: Sendable?] = ["awards": ["nebula": false]]
+
+    let pipeline2 = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(Field("awards").mapRemove("hugo").as("awards"))
+
+    let snapshot2 = try await pipeline2.execute()
+    XCTAssertEqual(snapshot2.results.count, 1, "Should retrieve one document")
+    if let resultDoc2 = snapshot2.results.first {
+      TestHelper.compare(pipelineResult: resultDoc2, expected: expectedResult)
+    } else {
+      XCTFail("No document retrieved for testSupportsMapRemove")
+    }
+  }
+
+  func testSupportsMapMerge() async throws {
+    let db = firestore()
+    let collRef = collectionRef(withDocuments: bookDocs)
+
+    let expectedResult: [String: Sendable?] =
+      ["awards": ["hugo": false, "nebula": false, "fakeAward": true]]
+    let mergeMap: [String: Sendable] = ["fakeAward": true]
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(Field("awards").mapMerge(mergeMap).as("awards"))
+
+    let snapshot = try await pipeline.execute()
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResult)
+    } else {
+      XCTFail("No document retrieved for testSupportsMapMerge")
+    }
+  }
+
+  func testSupportsTimestampConversions() async throws {
+    let db = firestore()
+    let randomCol = collectionRef() // Unique collection for this test
+
+    // Add a dummy document to ensure the select stage has an input
+    try await randomCol.document("dummyTimeDoc").setData(["field": "value"])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(
+        Constant(1_741_380_235).unixSecondsToTimestamp().as("unixSecondsToTimestamp"),
+        Constant(1_741_380_235_123).unixMillisToTimestamp().as("unixMillisToTimestamp"),
+        Constant(1_741_380_235_123_456).unixMicrosToTimestamp().as("unixMicrosToTimestamp"),
+        Constant(Timestamp(seconds: 1_741_380_235, nanoseconds: 123_456_789))
+          .timestampToUnixSeconds().as("timestampToUnixSeconds"),
+        Constant(Timestamp(seconds: 1_741_380_235, nanoseconds: 123_456_789))
+          .timestampToUnixMillis().as("timestampToUnixMillis"),
+        Constant(Timestamp(seconds: 1_741_380_235, nanoseconds: 123_456_789))
+          .timestampToUnixMicros().as("timestampToUnixMicros")
+      )
+
+    let snapshot = try await pipeline.execute()
+    XCTAssertEqual(
+      snapshot.results.count,
+      1,
+      "Should retrieve one document for timestamp conversions"
+    )
+
+    let expectedResults: [String: Sendable?] = [
+      "unixSecondsToTimestamp": Timestamp(seconds: 1_741_380_235, nanoseconds: 0),
+      "unixMillisToTimestamp": Timestamp(seconds: 1_741_380_235, nanoseconds: 123_000_000),
+      "unixMicrosToTimestamp": Timestamp(seconds: 1_741_380_235, nanoseconds: 123_456_000),
+      "timestampToUnixSeconds": 1_741_380_235,
+      "timestampToUnixMillis": 1_741_380_235_123,
+      "timestampToUnixMicros": 1_741_380_235_123_456,
+    ]
+
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for testSupportsTimestampConversions")
+    }
+  }
+
+  func testSupportsTimestampMath() async throws {
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let initialTimestamp = Timestamp(seconds: 1_741_380_235, nanoseconds: 0)
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(
+        Constant(initialTimestamp).as("timestamp")
+      )
+      .select(
+        Field("timestamp").timestampAdd(.day, 10).as("plus10days"),
+        Field("timestamp").timestampAdd(.hour, 10).as("plus10hours"),
+        Field("timestamp").timestampAdd(.minute, 10).as("plus10minutes"),
+        Field("timestamp").timestampAdd(.second, 10).as("plus10seconds"),
+        Field("timestamp").timestampAdd(.microsecond, 10).as("plus10micros"),
+        Field("timestamp").timestampAdd(.millisecond, 10).as("plus10millis"),
+        Field("timestamp").timestampSub(.day, 10).as("minus10days"),
+        Field("timestamp").timestampSub(.hour, 10).as("minus10hours"),
+        Field("timestamp").timestampSub(.minute, 10).as("minus10minutes"),
+        Field("timestamp").timestampSub(.second, 10).as("minus10seconds"),
+        Field("timestamp").timestampSub(.microsecond, 10).as("minus10micros"),
+        Field("timestamp").timestampSub(.millisecond, 10).as("minus10millis")
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [String: Timestamp] = [
+      "plus10days": Timestamp(seconds: 1_742_244_235, nanoseconds: 0),
+      "plus10hours": Timestamp(seconds: 1_741_416_235, nanoseconds: 0),
+      "plus10minutes": Timestamp(seconds: 1_741_380_835, nanoseconds: 0),
+      "plus10seconds": Timestamp(seconds: 1_741_380_245, nanoseconds: 0),
+      "plus10micros": Timestamp(seconds: 1_741_380_235, nanoseconds: 10000),
+      "plus10millis": Timestamp(seconds: 1_741_380_235, nanoseconds: 10_000_000),
+      "minus10days": Timestamp(seconds: 1_740_516_235, nanoseconds: 0),
+      "minus10hours": Timestamp(seconds: 1_741_344_235, nanoseconds: 0),
+      "minus10minutes": Timestamp(seconds: 1_741_379_635, nanoseconds: 0),
+      "minus10seconds": Timestamp(seconds: 1_741_380_225, nanoseconds: 0),
+      "minus10micros": Timestamp(seconds: 1_741_380_234, nanoseconds: 999_990_000),
+      "minus10millis": Timestamp(seconds: 1_741_380_234, nanoseconds: 990_000_000),
+    ]
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for timestamp math test")
+    }
+  }
+
+  func testSupportsByteLength() async throws {
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let bytes = Data([1, 2, 3, 4, 5, 6, 7, 0])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(
+        Constant(bytes).as("bytes")
+      )
+      .select(
+        Field("bytes").byteLength().as("byteLength")
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [String: Sendable] = [
+      "byteLength": 8,
+    ]
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(
+        pipelineResult: resultDoc,
+        expected: expectedResults.mapValues { $0 as Sendable }
+      )
+    } else {
+      XCTFail("No document retrieved for byte length test")
+    }
+  }
+
+  func testSupportsNot() async throws {
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(Constant(true).as("trueField"))
+      .select(
+        Field("trueField"),
+        (!(Field("trueField").eq(true))).as("falseField")
+      )
+
+    let snapshot = try await pipeline.execute()
+
+    let expectedResults: [String: Bool] = [
+      "trueField": true,
+      "falseField": false,
+    ]
+
+    XCTAssertEqual(snapshot.results.count, 1, "Should retrieve one document")
+    if let resultDoc = snapshot.results.first {
+      TestHelper.compare(pipelineResult: resultDoc, expected: expectedResults)
+    } else {
+      XCTFail("No document retrieved for not operator test")
+    }
+  }
+
+  func testReplaceFirst() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("The Lord of the Rings"))
+      .limit(1)
+      .select(Field("title").replaceFirst("o", "0").as("newName"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["newName": "The L0rd of the Rings"]],
+      enforceOrder: false
+    )
+  }
+
+  func testReplaceAll() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("The Lord of the Rings"))
+      .limit(1)
+      .select(Field("title").replaceAll("o", "0").as("newName"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["newName": "The L0rd 0f the Rings"]],
+      enforceOrder: false
+    )
+  }
+
+  func testBitAnd() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(Constant(5).bitAnd(12).as("result"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: [["result": 4]], enforceOrder: false)
+  }
+
+  func testBitOr() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(Constant(5).bitOr(12).as("result"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: [["result": 13]], enforceOrder: false)
+  }
+
+  func testBitXor() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(Constant(5).bitXor(12).as("result"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: [["result": 9]], enforceOrder: false)
+  }
+
+  func testBitNot() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+    let bytesInput = Data([0xFD])
+    let expectedOutput = Data([0x02])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(Constant(bytesInput).bitNot().as("result"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["result": expectedOutput]],
+      enforceOrder: false
+    )
+  }
+
+  func testBitLeftShift() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+    let bytesInput = Data([0x02])
+    let expectedOutput = Data([0x08])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(Constant(bytesInput).bitLeftShift(2).as("result"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["result": expectedOutput]],
+      enforceOrder: false
+    )
+  }
+
+  func testBitRightShift() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let db = firestore()
+    let randomCol = collectionRef()
+    try await randomCol.document("dummyDoc").setData(["field": "value"])
+    let bytesInput = Data([0x02])
+    let expectedOutput = Data([0x00])
+
+    let pipeline = db.pipeline()
+      .collection(randomCol.path)
+      .limit(1)
+      .select(Constant(bytesInput).bitRightShift(2).as("result"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["result": expectedOutput]],
+      enforceOrder: false
+    )
+  }
+
+  func testDocumentId() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(Field("__path__").documentId().as("docId"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["docId": "book4"]],
+      enforceOrder: false
+    )
+  }
+
+  func testSubstr() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(Field("title").substr(9, 2).as("of"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(pipelineSnapshot: snapshot, expected: [["of": "of"]], enforceOrder: false)
+  }
+
+  func testSubstrWithoutLength() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .sort(Field("rating").descending())
+      .limit(1)
+      .select(Field("title").substr(9).as("of"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["of": "of the Rings"]],
+      enforceOrder: false
+    )
+  }
+
+  func testArrayConcat() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    var pipeline = db.pipeline()
+      .collection(collRef.path)
+      .limit(1) // Assuming we operate on the first book (book1)
+      .select(
+        Field("tags").arrayConcat(
+          ["newTag1", "newTag2"],
+          [Field("tags")],
+          [Constant.nil]
+        ).as("modifiedTags")
+      )
+    var snapshot = try await pipeline.execute()
+
+    let expectedTags: [Sendable?] = [
+      "comedy", "space", "adventure",
+      "newTag1", "newTag2",
+      "comedy", "space", "adventure",
+      nil,
+    ]
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["modifiedTags": expectedTags]],
+      enforceOrder: false
+    )
+
+    pipeline = db.pipeline()
+      .collection(collRef.path)
+      .limit(1) // Assuming we operate on the first book (book1)
+      .select(
+        Field("tags").arrayConcat(
+          Field("newTag1"), Field("newTag2"),
+          Field("tags"),
+          Constant.nil
+        ).as("modifiedTags")
+      )
+    snapshot = try await pipeline.execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["modifiedTags": expectedTags]],
+      enforceOrder: false
+    )
+  }
+
+  func testToLowercase() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .limit(1)
+      .select(Field("title").lowercased().as("lowercaseTitle"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["lowercaseTitle": "the hitchhiker's guide to the galaxy"]],
+      enforceOrder: false
+    )
+  }
+
+  func testToUppercase() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .limit(1)
+      .select(Field("author").uppercased().as("uppercaseAuthor"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["uppercaseAuthor": "DOUGLAS ADAMS"]],
+      enforceOrder: false
+    )
+  }
+
+  func testTrim() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .addFields(Constant(" The Hitchhiker's Guide to the Galaxy ").as("spacedTitle"))
+      .select(Field("spacedTitle").trim().as("trimmedTitle"), Field("spacedTitle"))
+      .limit(1)
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [[
+        "spacedTitle": " The Hitchhiker's Guide to the Galaxy ",
+        "trimmedTitle": "The Hitchhiker's Guide to the Galaxy",
+      ]],
+      enforceOrder: false
+    )
+  }
+
+  func testReverseString() async throws {
+    // Renamed from testReverse to avoid conflict if a generic reverse exists elsewhere
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .where(Field("title").eq("1984"))
+      .limit(1)
+      .select(Field("title").reverse().as("reverseTitle"))
+    let snapshot = try await pipeline.execute()
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [["reverseTitle": "4891"]],
+      enforceOrder: false
+    )
+  }
+
+  private func addBooks(to collectionReference: CollectionReference) async throws {
+    try await collectionReference.document("book11").setData([
+      "title": "Jonathan Strange & Mr Norrell",
+      "author": "Susanna Clarke",
+      "genre": "Fantasy",
+      "published": 2004,
+      "rating": 4.6,
+      "tags": ["historical fantasy", "magic", "alternate history", "england"],
+      "awards": ["hugo": false, "nebula": false],
+    ])
+    try await collectionReference.document("book12").setData([
+      "title": "The Master and Margarita",
+      "author": "Mikhail Bulgakov",
+      "genre": "Satire",
+      "published": 1967,
+      "rating": 4.6,
+      "tags": ["russian literature", "supernatural", "philosophy", "dark comedy"],
+      "awards": [:],
+    ])
+    try await collectionReference.document("book13").setData([
+      "title": "A Long Way to a Small, Angry Planet",
+      "author": "Becky Chambers",
+      "genre": "Science Fiction",
+      "published": 2014,
+      "rating": 4.6,
+      "tags": ["space opera", "found family", "character-driven", "optimistic"],
+      "awards": ["hugo": false, "nebula": false, "kitschies": true],
+    ])
+  }
+
+  func testSupportsPaginationWithOffsetsUsingName() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+    try await addBooks(to: collRef)
+
+    let pageSize = 2
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select("title", "rating", "__name__")
+      .sort(
+        Field("rating").descending(),
+        Field("__name__").ascending()
+      )
+
+    var snapshot = try await pipeline.limit(Int32(pageSize)).execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        ["title": "The Lord of the Rings", "rating": 4.7],
+        ["title": "Jonathan Strange & Mr Norrell", "rating": 4.6],
+      ],
+      enforceOrder: true
+    )
+
+    let lastDoc = snapshot.results.last!
+
+    snapshot = try await pipeline.where(
+      (Field("rating").eq(lastDoc.get("rating")!)
+        && Field("rating").lt(lastDoc.get("rating")!))
+        || Field("rating").lt(lastDoc.get("rating")!)
+    ).limit(Int32(pageSize)).execute()
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        ["title": "Pride and Prejudice", "rating": 4.5],
+        ["title": "Crime and Punishment", "rating": 4.3],
+      ],
+      enforceOrder: false
+    )
+  }
+
+  func testSupportsPaginationWithOffsetsUsingPath() async throws {
+    try XCTSkipIf(true, "Skip this test since backend has not yet supported.")
+
+    let collRef = collectionRef(withDocuments: bookDocs)
+    let db = collRef.firestore
+    try await addBooks(to: collRef)
+
+    let pageSize = 2
+    var currPage = 0
+
+    let pipeline = db.pipeline()
+      .collection(collRef.path)
+      .select("title", "rating", "__path__")
+      .sort(
+        Field("rating").descending(),
+        Field("__path__").ascending()
+      )
+
+    var snapshot = try await pipeline.offset(Int32(currPage) * Int32(pageSize)).limit(
+      Int32(pageSize)
+    ).execute()
+
+    currPage += 1
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        ["title": "The Lord of the Rings", "rating": 4.7],
+        ["title": "Dune", "rating": 4.6],
+      ],
+      enforceOrder: true
+    )
+
+    snapshot = try await pipeline.offset(Int32(currPage) * Int32(pageSize)).limit(
+      Int32(pageSize)
+    ).execute()
+
+    currPage += 1
+
+    TestHelper.compare(
+      pipelineSnapshot: snapshot,
+      expected: [
+        ["title": "A Long Way to a Small, Angry Planet", "rating": 4.6],
+        ["title": "Pride and Prejudice", "rating": 4.5],
+      ],
+      enforceOrder: true
+    )
+  }
+}
diff --git a/Firestore/Swift/Tests/TestHelper/TestHelper.swift b/Firestore/Swift/Tests/TestHelper/TestHelper.swift
new file mode 100644
index 00000000000..a98e1bd4fa2
--- /dev/null
+++ b/Firestore/Swift/Tests/TestHelper/TestHelper.swift
@@ -0,0 +1,227 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import FirebaseCore
+import FirebaseFirestore
+import Foundation
+import XCTest
+
+public enum TestHelper {
+  public static func compare(pipelineSnapshot snapshot: PipelineSnapshot,
+                             expectedCount: Int,
+                             file: StaticString = #file,
+                             line: UInt = #line) {
+    XCTAssertEqual(
+      snapshot.results.count,
+      expectedCount,
+      "Snapshot results count mismatch",
+      file: file,
+      line: line
+    )
+  }
+
+  static func compare(pipelineSnapshot snapshot: PipelineSnapshot,
+                      expectedIDs: [String],
+                      enforceOrder: Bool,
+                      file: StaticString = #file,
+                      line: UInt = #line) {
+    let results = snapshot.results
+    XCTAssertEqual(
+      results.count,
+      expectedIDs.count,
+      "Snapshot document IDs count mismatch. Expected \(expectedIDs.count), got \(results.count). Actual IDs: \(results.map { $0.id })",
+      file: file,
+      line: line
+    )
+
+    if enforceOrder {
+      let actualIDs = results.map { $0.id! }
+      XCTAssertEqual(
+        actualIDs,
+        expectedIDs,
+        "Snapshot document IDs mismatch. Expected: \(expectedIDs.sorted()), got: \(actualIDs)",
+        file: file,
+        line: line
+      )
+    } else {
+      let actualIDs = results.map { $0.id! }.sorted()
+      XCTAssertEqual(
+        actualIDs,
+        expectedIDs.sorted(),
+        "Snapshot document IDs mismatch. Expected (sorted): \(expectedIDs.sorted()), got (sorted): \(actualIDs)",
+        file: file,
+        line: line
+      )
+    }
+  }
+
+  static func compare(pipelineSnapshot snapshot: PipelineSnapshot,
+                      expected: [[String: Sendable?]],
+                      enforceOrder: Bool,
+                      file: StaticString = #file,
+                      line: UInt = #line) {
+    guard snapshot.results.count == expected.count else {
+      XCTFail("Mismatch in expected results count and actual results count.")
+      return
+    }
+
+    if enforceOrder {
+      for i in 0 ..< expected.count {
+        compare(pipelineResult: snapshot.results[i], expected: expected[i])
+      }
+    } else {
+      let result = snapshot.results.map { $0.data }
+      XCTAssertTrue(areArraysOfDictionariesEqualRegardlessOfOrder(result, expected),
+                    "PipelineSnapshot mismatch. Expected \(expected), got \(result)")
+    }
+  }
+
+  static func compare(pipelineResult result: PipelineResult,
+                      expected: [String: Sendable?],
+                      file: StaticString = #file,
+                      line: UInt = #line) {
+    XCTAssertTrue(areDictionariesEqual(result.data, expected),
+                  "Document data mismatch. Expected \(expected), got \(result.data)")
+  }
+
+  // MARK: - Internal helper
+
+  private static func isNilOrNSNull(_ value: Sendable?) -> Bool {
+    // First, use a `guard` to safely unwrap the optional.
+    // If it's nil, we can immediately return true.
+    guard let unwrappedValue = value else {
+      return true
+    }
+
+    // If it wasn't nil, we now check if the unwrapped value is the NSNull object.
+    return unwrappedValue is NSNull
+  }
+
+  // A custom function to compare two values of type 'Sendable'
+  private static func areEqual(_ value1: Sendable?, _ value2: Sendable?) -> Bool {
+    if isNilOrNSNull(value1) || isNilOrNSNull(value2) {
+      return isNilOrNSNull(value1) && isNilOrNSNull(value2)
+    }
+
+    switch (value1!, value2!) {
+    case let (v1 as [String: Sendable?], v2 as [String: Sendable?]):
+      return areDictionariesEqual(v1, v2)
+    case let (v1 as [Sendable?], v2 as [Sendable?]):
+      return areArraysEqual(v1, v2)
+    case let (v1 as Timestamp, v2 as Timestamp):
+      return v1 == v2
+    case let (v1 as Date, v2 as Timestamp):
+      // Firestore converts Dates to Timestamps
+      return Timestamp(date: v1) == v2
+    case let (v1 as GeoPoint, v2 as GeoPoint):
+      return v1.latitude == v2.latitude && v1.longitude == v2.longitude
+    case let (v1 as DocumentReference, v2 as DocumentReference):
+      return v1.path == v2.path
+    case let (v1 as VectorValue, v2 as VectorValue):
+      return v1.array == v2.array
+    case let (v1 as Data, v2 as Data):
+      return v1 == v2
+    case let (v1 as Int, v2 as Int):
+      return v1 == v2
+    case let (v1 as Double, v2 as Double):
+      let doubleEpsilon = 0.000001
+      return abs(v1 - v2) <= doubleEpsilon
+    case let (v1 as Float, v2 as Float):
+      let floatEpsilon: Float = 0.00001
+      return abs(v1 - v2) <= floatEpsilon
+    case let (v1 as String, v2 as String):
+      return v1 == v2
+    case let (v1 as Bool, v2 as Bool):
+      return v1 == v2
+    case let (v1 as UInt8, v2 as UInt8):
+      return v1 == v2
+    default:
+      // Fallback for any other types, might need more specific checks
+      return false
+    }
+  }
+
+  // A function to compare two dictionaries
+  private static func areDictionariesEqual(_ dict1: [String: Sendable?],
+                                           _ dict2: [String: Sendable?]) -> Bool {
+    guard dict1.count == dict2.count else { return false }
+
+    for (key, value1) in dict1 {
+      guard let value2 = dict2[key], areEqual(value1, value2) else {
+        XCTFail("""
+        Dictionary value mismatch for key: '\(key)'
+        Actual value: '\(String(describing: value1))' (from dict1)
+        Expected value:   '\(String(describing: dict2[key]))' (from dict2)
+        Full actual value: \(String(describing: dict1))
+        Full expected value: \(String(describing: dict2))
+        """)
+        return false
+      }
+    }
+    return true
+  }
+
+  private static func areArraysEqual(_ array1: [Sendable?], _ array2: [Sendable?]) -> Bool {
+    guard array1.count == array2.count else { return false }
+
+    for (index, value1) in array1.enumerated() {
+      let value2 = array2[index]
+      if !areEqual(value1, value2) {
+        XCTFail("""
+        Array value mismatch.
+        Actual array value: '\(String(describing: value1))'
+        Expected array value:   '\(String(describing: value2))'
+        """)
+        return false
+      }
+    }
+    return true
+  }
+
+  private static func areArraysOfDictionariesEqualRegardlessOfOrder(_ array1: [[String: Sendable?]],
+                                                                    _ array2: [[String: Sendable?]])
+    -> Bool {
+    // 1. Check if the arrays have the same number of dictionaries.
+    guard array1.count == array2.count else {
+      return false
+    }
+
+    // Create a mutable copy of array2 to remove matched dictionaries
+    var mutableArray2 = array2
+
+    // Iterate through each dictionary in array1
+    for dict1 in array1 {
+      var foundMatch = false
+      // Try to find an equivalent dictionary in mutableArray2
+      if let index = mutableArray2.firstIndex(where: { dict2 in
+        areDictionariesEqual(dict1, dict2) // Use our deep comparison function
+      }) {
+        // If a match is found, remove it from mutableArray2 to handle duplicates
+        mutableArray2.remove(at: index)
+        foundMatch = true
+      }
+
+      // If no match was found for the current dictionary from array1, arrays are not equal
+      if !foundMatch {
+        return false
+      }
+    }
+
+    // If we've iterated through all of array1 and mutableArray2 is empty,
+    // it means all dictionaries found a unique match.
+    return mutableArray2.isEmpty
+  }
+}
diff --git a/Firestore/core/src/api/aggregate_expressions.cc b/Firestore/core/src/api/aggregate_expressions.cc
new file mode 100644
index 00000000000..8509dfda59a
--- /dev/null
+++ b/Firestore/core/src/api/aggregate_expressions.cc
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/aggregate_expressions.h"
+
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+google_firestore_v1_Value AggregateFunction::to_proto() const {
+  google_firestore_v1_Value result;
+  result.which_value_type = google_firestore_v1_Value_function_value_tag;
+  result.function_value = google_firestore_v1_Function{};
+  result.function_value.name = nanopb::MakeBytesArray(name_);
+  result.function_value.args_count = static_cast<pb_size_t>(params_.size());
+  result.function_value.args = nanopb::MakeArray<google_firestore_v1_Value>(
+      result.function_value.args_count);
+
+  for (size_t i = 0; i < params_.size(); ++i) {
+    result.function_value.args[i] = params_[i]->to_proto();
+  }
+
+  return result;
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/Firestore/core/src/api/aggregate_expressions.h b/Firestore/core/src/api/aggregate_expressions.h
new file mode 100644
index 00000000000..fc19eacb0a5
--- /dev/null
+++ b/Firestore/core/src/api/aggregate_expressions.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_AGGREGATE_EXPRESSIONS_H_
+#define FIRESTORE_CORE_SRC_API_AGGREGATE_EXPRESSIONS_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/api/expressions.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class AggregateFunction {
+ public:
+  AggregateFunction(std::string name, std::vector<std::shared_ptr<Expr>> params)
+      : name_(std::move(name)), params_(std::move(params)) {
+  }
+  ~AggregateFunction() = default;
+
+  google_firestore_v1_Value to_proto() const;
+
+ private:
+  std::string name_;
+  std::vector<std::shared_ptr<Expr>> params_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_AGGREGATE_EXPRESSIONS_H_
diff --git a/Firestore/core/src/api/api_fwd.h b/Firestore/core/src/api/api_fwd.h
index 0c35c567157..ded3bfb76af 100644
--- a/Firestore/core/src/api/api_fwd.h
+++ b/Firestore/core/src/api/api_fwd.h
@@ -44,6 +44,8 @@ class DocumentReference;
 class DocumentSnapshot;
 class Firestore;
 class ListenerRegistration;
+class Pipeline;
+class PipelineSnapshot;
 class Query;
 class QuerySnapshot;
 class Settings;
diff --git a/Firestore/core/src/api/expressions.cc b/Firestore/core/src/api/expressions.cc
new file mode 100644
index 00000000000..7ec517f2aab
--- /dev/null
+++ b/Firestore/core/src/api/expressions.cc
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/expressions.h"
+
+#include <memory>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+google_firestore_v1_Value Field::to_proto() const {
+  google_firestore_v1_Value result;
+
+  result.which_value_type = google_firestore_v1_Value_field_reference_value_tag;
+  result.field_reference_value = nanopb::MakeBytesArray(this->name_);
+
+  return result;
+}
+
+google_firestore_v1_Value Constant::to_proto() const {
+  // Return a copy of the value proto to avoid double delete.
+  return *model::DeepClone(*value_).release();
+}
+
+google_firestore_v1_Value FunctionExpr::to_proto() const {
+  google_firestore_v1_Value result;
+
+  result.which_value_type = google_firestore_v1_Value_function_value_tag;
+  result.function_value = google_firestore_v1_Function{};
+  result.function_value.name = nanopb::MakeBytesArray(name_);
+  nanopb::SetRepeatedField(
+      &result.function_value.args, &result.function_value.args_count, args_,
+      [](const std::shared_ptr<Expr>& arg) { return arg->to_proto(); });
+
+  return result;
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/Firestore/core/src/api/expressions.h b/Firestore/core/src/api/expressions.h
new file mode 100644
index 00000000000..fe6f4fde9c8
--- /dev/null
+++ b/Firestore/core/src/api/expressions.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_EXPRESSIONS_H_
+#define FIRESTORE_CORE_SRC_API_EXPRESSIONS_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class Expr {
+ public:
+  Expr() = default;
+  virtual ~Expr() = default;
+  virtual google_firestore_v1_Value to_proto() const = 0;
+};
+
+class Field : public Expr {
+ public:
+  explicit Field(std::string name) : name_(std::move(name)) {
+  }
+  google_firestore_v1_Value to_proto() const override;
+  const std::string& alias() const {
+    return name_;
+  }
+
+ private:
+  std::string name_;
+};
+
+class Constant : public Expr {
+ public:
+  explicit Constant(nanopb::SharedMessage<google_firestore_v1_Value> value)
+      : value_(std::move(value)) {
+  }
+  google_firestore_v1_Value to_proto() const override;
+
+ private:
+  nanopb::SharedMessage<google_firestore_v1_Value> value_;
+};
+
+class FunctionExpr : public Expr {
+ public:
+  FunctionExpr(std::string name, std::vector<std::shared_ptr<Expr>> args)
+      : name_(std::move(name)), args_(std::move(args)) {
+  }
+
+  google_firestore_v1_Value to_proto() const override;
+
+ private:
+  std::string name_;
+  std::vector<std::shared_ptr<Expr>> args_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_EXPRESSIONS_H_
diff --git a/Firestore/core/src/api/firestore.cc b/Firestore/core/src/api/firestore.cc
index 70cb975cc71..1484f3a27fc 100644
--- a/Firestore/core/src/api/firestore.cc
+++ b/Firestore/core/src/api/firestore.cc
@@ -179,6 +179,13 @@ void Firestore::RunTransaction(core::TransactionUpdateCallback update_callback,
                        std::move(result_callback));
 }
 
+void Firestore::RunPipeline(const api::Pipeline& pipeline,
+                            util::StatusOrCallback<PipelineSnapshot> callback) {
+  EnsureClientConfigured();
+
+  client_->RunPipeline(pipeline, std::move(callback));
+}
+
 void Firestore::Terminate(util::StatusCallback callback) {
   // The client must be initialized to ensure that all subsequent API usage
   // throws an exception.
diff --git a/Firestore/core/src/api/firestore.h b/Firestore/core/src/api/firestore.h
index 0300f6c61f2..de22a87c14c 100644
--- a/Firestore/core/src/api/firestore.h
+++ b/Firestore/core/src/api/firestore.h
@@ -102,6 +102,8 @@ class Firestore : public std::enable_shared_from_this<Firestore> {
   void RunTransaction(core::TransactionUpdateCallback update_callback,
                       core::TransactionResultCallback result_callback,
                       int max_attempts);
+  void RunPipeline(const api::Pipeline& pipeline,
+                   util::StatusOrCallback<PipelineSnapshot> callback);
 
   void Terminate(util::StatusCallback callback);
   void ClearPersistence(util::StatusCallback callback);
diff --git a/Firestore/core/src/api/ordering.cc b/Firestore/core/src/api/ordering.cc
new file mode 100644
index 00000000000..47d5ad6013b
--- /dev/null
+++ b/Firestore/core/src/api/ordering.cc
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/ordering.h"
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+google_firestore_v1_Value Ordering::to_proto() const {
+  google_firestore_v1_Value result;
+  result.which_value_type = google_firestore_v1_Value_map_value_tag;
+
+  result.map_value.fields_count = 2;
+  result.map_value.fields =
+      nanopb::MakeArray<google_firestore_v1_MapValue_FieldsEntry>(2);
+
+  result.map_value.fields[0].key = nanopb::MakeBytesArray("direction");
+  google_firestore_v1_Value direction;
+  direction.which_value_type = google_firestore_v1_Value_string_value_tag;
+  direction.string_value = nanopb::MakeBytesArray(
+      this->direction_ == ASCENDING ? "ascending" : "descending");
+  result.map_value.fields[0].value = direction;
+
+  result.map_value.fields[1].key = nanopb::MakeBytesArray("expression");
+  result.map_value.fields[1].value = expr_->to_proto();
+
+  return result;
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/Firestore/core/src/api/ordering.h b/Firestore/core/src/api/ordering.h
new file mode 100644
index 00000000000..2e4709d2af0
--- /dev/null
+++ b/Firestore/core/src/api/ordering.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_ORDERING_H_
+#define FIRESTORE_CORE_SRC_API_ORDERING_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/api/expressions.h"
+#include "Firestore/core/src/util/exception.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class Ordering {
+ public:
+  enum Direction {
+    ASCENDING,
+    DESCENDING,
+  };
+
+  static Direction DirectionFromString(const std::string& str) {
+    if (str == "ascending") return ASCENDING;
+    if (str == "descending") return DESCENDING;
+    util::ThrowInvalidArgument("Unknown direction: '%s' ", str);
+  }
+
+  Ordering(std::shared_ptr<api::Expr> expr, Direction direction)
+      : expr_(expr), direction_(direction) {
+  }
+
+  google_firestore_v1_Value to_proto() const;
+
+ private:
+  std::shared_ptr<api::Expr> expr_;
+  Direction direction_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_ORDERING_H_
diff --git a/Firestore/core/src/api/pipeline.cc b/Firestore/core/src/api/pipeline.cc
new file mode 100644
index 00000000000..8f92d65465e
--- /dev/null
+++ b/Firestore/core/src/api/pipeline.cc
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/pipeline.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/core/firestore_client.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using nanopb::CheckedSize;
+
+Pipeline Pipeline::AddingStage(std::shared_ptr<Stage> stage) {
+  auto copy = std::vector<std::shared_ptr<Stage>>(this->stages_);
+  copy.push_back(stage);
+
+  return {copy, this->firestore_};
+}
+
+const std::vector<std::shared_ptr<Stage>>& Pipeline::stages() const {
+  return this->stages_;
+}
+
+void Pipeline::execute(util::StatusOrCallback<PipelineSnapshot> callback) {
+  this->firestore_->RunPipeline(*this, std::move(callback));
+}
+
+google_firestore_v1_Value Pipeline::to_proto() const {
+  google_firestore_v1_Value result;
+
+  result.which_value_type = google_firestore_v1_Value_pipeline_value_tag;
+  result.pipeline_value = google_firestore_v1_Pipeline{};
+  result.pipeline_value.stages_count = CheckedSize(this->stages_.size());
+  nanopb::SetRepeatedField(
+      &result.pipeline_value.stages, &result.pipeline_value.stages_count,
+      stages_,
+      [](const std::shared_ptr<Stage>& arg) { return arg->to_proto(); });
+
+  return result;
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/Firestore/core/src/api/pipeline.h b/Firestore/core/src/api/pipeline.h
new file mode 100644
index 00000000000..edea35dce6d
--- /dev/null
+++ b/Firestore/core/src/api/pipeline.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_PIPELINE_H_
+#define FIRESTORE_CORE_SRC_API_PIPELINE_H_
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/api/pipeline_snapshot.h"
+#include "Firestore/core/src/api/stages.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class Pipeline {
+ public:
+  Pipeline(std::vector<std::shared_ptr<Stage>> stages,
+           std::shared_ptr<Firestore> firestore)
+      : stages_(std::move(stages)), firestore_(firestore) {
+  }
+
+  const std::shared_ptr<Firestore>& firestore() const {
+    return firestore_;
+  }
+
+  Pipeline AddingStage(std::shared_ptr<Stage> stage);
+
+  const std::vector<std::shared_ptr<Stage>>& stages() const;
+
+  void execute(util::StatusOrCallback<PipelineSnapshot> callback);
+
+  google_firestore_v1_Value to_proto() const;
+
+ private:
+  std::vector<std::shared_ptr<Stage>> stages_;
+  std::shared_ptr<Firestore> firestore_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_PIPELINE_H_
diff --git a/Firestore/core/src/api/pipeline_result.cc b/Firestore/core/src/api/pipeline_result.cc
new file mode 100644
index 00000000000..655fd7b4132
--- /dev/null
+++ b/Firestore/core/src/api/pipeline_result.cc
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/pipeline_result.h"
+
+#include <memory>
+
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/object_value.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using model::Document;
+using model::DocumentKey;
+using model::FieldPath;
+using model::ObjectValue;
+
+std::shared_ptr<model::ObjectValue> PipelineResult::internal_value() const {
+  return value_;
+}
+
+absl::optional<absl::string_view> PipelineResult::document_id() const {
+  if (!internal_key_.has_value()) {
+    return absl::nullopt;
+  }
+  return internal_key_.value().path().last_segment();
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/Firestore/core/src/api/pipeline_result.h b/Firestore/core/src/api/pipeline_result.h
new file mode 100644
index 00000000000..662ea721c6b
--- /dev/null
+++ b/Firestore/core/src/api/pipeline_result.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_PIPELINE_RESULT_H_
+#define FIRESTORE_CORE_SRC_API_PIPELINE_RESULT_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class DocumentReference;
+class Firestore;
+
+class PipelineResult {
+ public:
+  PipelineResult(absl::optional<model::DocumentKey> document_key,
+                 std::shared_ptr<model::ObjectValue> value,
+                 absl::optional<model::SnapshotVersion> create_time,
+                 absl::optional<model::SnapshotVersion> update_time,
+                 absl::optional<model::SnapshotVersion> execution_time)
+      : internal_key_{std::move(document_key)},
+        value_{std::move(value)},
+        create_time_{create_time},
+        update_time_{update_time},
+        execution_time_{execution_time} {
+  }
+
+  PipelineResult() = default;
+
+  std::shared_ptr<model::ObjectValue> internal_value() const;
+  absl::optional<absl::string_view> document_id() const;
+
+  absl::optional<model::SnapshotVersion> create_time() const {
+    return create_time_;
+  }
+
+  absl::optional<model::SnapshotVersion> update_time() const {
+    return update_time_;
+  }
+
+  const absl::optional<model::DocumentKey>& internal_key() const {
+    return internal_key_;
+  }
+
+ private:
+  absl::optional<model::DocumentKey> internal_key_;
+  // Using a shared pointer to ObjectValue makes PipelineResult copy-assignable
+  // without having to manually create a deep clone of its Protobuf contents.
+  std::shared_ptr<model::ObjectValue> value_ =
+      std::make_shared<model::ObjectValue>();
+  absl::optional<model::SnapshotVersion> create_time_;
+  absl::optional<model::SnapshotVersion> update_time_;
+  absl::optional<model::SnapshotVersion> execution_time_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_PIPELINE_RESULT_H_
diff --git a/Firestore/core/src/api/pipeline_snapshot.h b/Firestore/core/src/api/pipeline_snapshot.h
new file mode 100644
index 00000000000..2bb0a1e94d2
--- /dev/null
+++ b/Firestore/core/src/api/pipeline_snapshot.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_PIPELINE_SNAPSHOT_H_
+#define FIRESTORE_CORE_SRC_API_PIPELINE_SNAPSHOT_H_
+
+#include <functional>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/api/pipeline_result.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class PipelineSnapshot {
+ public:
+  explicit PipelineSnapshot(std::vector<PipelineResult>&& results,
+                            model::SnapshotVersion execution_time)
+      : results_(std::move(results)), execution_time_(execution_time) {
+  }
+
+  const std::vector<PipelineResult>& results() const {
+    return results_;
+  }
+
+  model::SnapshotVersion execution_time() const {
+    return execution_time_;
+  }
+
+  const std::shared_ptr<Firestore> firestore() const {
+    return firestore_;
+  }
+
+  void SetFirestore(std::shared_ptr<Firestore> db) {
+    firestore_ = std::move(db);
+  }
+
+ private:
+  std::vector<PipelineResult> results_;
+  model::SnapshotVersion execution_time_;
+  std::shared_ptr<Firestore> firestore_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_PIPELINE_SNAPSHOT_H_
diff --git a/Firestore/core/src/api/stages.cc b/Firestore/core/src/api/stages.cc
new file mode 100644
index 00000000000..a32dfe6f40e
--- /dev/null
+++ b/Firestore/core/src/api/stages.cc
@@ -0,0 +1,466 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/stages.h"
+
+#include <unordered_map>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/api/pipeline.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using model::DeepClone;
+
+google_firestore_v1_Pipeline_Stage CollectionSource::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+
+  result.name = nanopb::MakeBytesArray("collection");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+  result.args[0].which_value_type =
+      google_firestore_v1_Value_reference_value_tag;
+  result.args[0].reference_value = nanopb::MakeBytesArray(this->path_);
+
+  result.options_count = 0;
+  result.options = nullptr;
+
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage DatabaseSource::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+
+  result.name = nanopb::MakeBytesArray("database");
+  result.args_count = 0;
+  result.args = nullptr;
+  result.options_count = 0;
+  result.options = nullptr;
+
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage CollectionGroupSource::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+
+  result.name = nanopb::MakeBytesArray("collection_group");
+
+  result.args_count = 2;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(2);
+  // First argument is an empty reference value.
+  result.args[0].which_value_type =
+      google_firestore_v1_Value_reference_value_tag;
+  result.args[0].reference_value = nanopb::MakeBytesArray("");
+
+  // Second argument is the collection ID (encoded as a string value).
+  result.args[1].which_value_type = google_firestore_v1_Value_string_value_tag;
+  result.args[1].string_value = nanopb::MakeBytesArray(collection_id_);
+
+  result.options_count = 0;
+  result.options = nullptr;
+
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage DocumentsSource::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+
+  result.name = nanopb::MakeBytesArray("documents");
+
+  result.args_count = static_cast<pb_size_t>(documents_.size());
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(result.args_count);
+
+  for (size_t i = 0; i < documents_.size(); ++i) {
+    result.args[i].which_value_type =
+        google_firestore_v1_Value_reference_value_tag;
+    result.args[i].reference_value = nanopb::MakeBytesArray(documents_[i]);
+  }
+
+  result.options_count = 0;
+  result.options = nullptr;
+
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage AddFields::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("add_fields");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+
+  result.args[0].which_value_type = google_firestore_v1_Value_map_value_tag;
+  nanopb::SetRepeatedField(
+      &result.args[0].map_value.fields, &result.args[0].map_value.fields_count,
+      fields_, [](const std::pair<std::string, std::shared_ptr<Expr>>& entry) {
+        return _google_firestore_v1_MapValue_FieldsEntry{
+            nanopb::MakeBytesArray(entry.first), entry.second->to_proto()};
+      });
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage AggregateStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("aggregate");
+
+  result.args_count = 2;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(2);
+
+  // Encode accumulators map.
+  result.args[0].which_value_type = google_firestore_v1_Value_map_value_tag;
+  nanopb::SetRepeatedField(
+      &result.args[0].map_value.fields, &result.args[0].map_value.fields_count,
+      this->accumulators_,
+      [](const std::pair<std::string, std::shared_ptr<AggregateFunction>>&
+             entry) {
+        return _google_firestore_v1_MapValue_FieldsEntry{
+            nanopb::MakeBytesArray(entry.first), entry.second->to_proto()};
+      });
+
+  // Encode groups map.
+  result.args[1].which_value_type = google_firestore_v1_Value_map_value_tag;
+  nanopb::SetRepeatedField(
+      &result.args[1].map_value.fields, &result.args[1].map_value.fields_count,
+      this->groups_,
+      [](const std::pair<std::string, std::shared_ptr<Expr>>& entry) {
+        return _google_firestore_v1_MapValue_FieldsEntry{
+            nanopb::MakeBytesArray(entry.first), entry.second->to_proto()};
+      });
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage Where::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+
+  result.name = nanopb::MakeBytesArray("where");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+  result.args[0] = this->expr_->to_proto();
+
+  result.options_count = 0;
+  result.options = nullptr;
+
+  return result;
+}
+
+google_firestore_v1_Value FindNearestStage::DistanceMeasure::proto() const {
+  google_firestore_v1_Value result;
+  result.which_value_type = google_firestore_v1_Value_string_value_tag;
+  switch (measure_) {
+    case EUCLIDEAN:
+      result.string_value = nanopb::MakeBytesArray("euclidean");
+      break;
+    case COSINE:
+      result.string_value = nanopb::MakeBytesArray("cosine");
+      break;
+    case DOT_PRODUCT:
+      result.string_value = nanopb::MakeBytesArray("dot_product");
+      break;
+  }
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage FindNearestStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("find_nearest");
+
+  result.args_count = 3;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(3);
+  result.args[0] = property_->to_proto();
+  result.args[1] = *DeepClone(*vector_).release();
+  result.args[2] = distance_measure_.proto();
+
+  nanopb::SetRepeatedField(
+      &result.options, &result.options_count, options_,
+      [](const std::pair<std::string, google_firestore_v1_Value>& entry) {
+        return _google_firestore_v1_Pipeline_Stage_OptionsEntry{
+            nanopb::MakeBytesArray(entry.first), entry.second};
+      });
+
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage LimitStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("limit");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+  result.args[0].which_value_type = google_firestore_v1_Value_integer_value_tag;
+  result.args[0].integer_value = limit_;
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage OffsetStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("offset");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+  result.args[0].which_value_type = google_firestore_v1_Value_integer_value_tag;
+  result.args[0].integer_value = offset_;
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage SelectStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("select");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+
+  result.args[0].which_value_type = google_firestore_v1_Value_map_value_tag;
+  nanopb::SetRepeatedField(
+      &result.args[0].map_value.fields, &result.args[0].map_value.fields_count,
+      fields_, [](const std::pair<std::string, std::shared_ptr<Expr>>& entry) {
+        return _google_firestore_v1_MapValue_FieldsEntry{
+            nanopb::MakeBytesArray(entry.first), entry.second->to_proto()};
+      });
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage SortStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("sort");
+
+  result.args_count = static_cast<pb_size_t>(orders_.size());
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(result.args_count);
+
+  for (size_t i = 0; i < orders_.size(); ++i) {
+    result.args[i] = orders_[i]->to_proto();
+  }
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage DistinctStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("distinct");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+
+  result.args[0].which_value_type = google_firestore_v1_Value_map_value_tag;
+  nanopb::SetRepeatedField(
+      &result.args[0].map_value.fields, &result.args[0].map_value.fields_count,
+      groups_, [](const std::pair<std::string, std::shared_ptr<Expr>>& entry) {
+        return _google_firestore_v1_MapValue_FieldsEntry{
+            nanopb::MakeBytesArray(entry.first), entry.second->to_proto()};
+      });
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage RemoveFieldsStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("remove_fields");
+
+  result.args_count = static_cast<pb_size_t>(fields_.size());
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(result.args_count);
+
+  for (size_t i = 0; i < fields_.size(); ++i) {
+    result.args[i] = fields_[i].to_proto();
+  }
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+google_firestore_v1_Value ReplaceWith::ReplaceMode::to_proto() const {
+  google_firestore_v1_Value result;
+  result.which_value_type = google_firestore_v1_Value_string_value_tag;
+  switch (mode_) {
+    case FULL_REPLACE:
+      result.string_value = nanopb::MakeBytesArray("full_replace");
+      break;
+    case MERGE_PREFER_NEST:
+      result.string_value = nanopb::MakeBytesArray("merge_prefer_nest");
+      break;
+  }
+  return result;
+}
+
+google_firestore_v1_Pipeline_Stage ReplaceWith::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("replace_with");
+
+  result.args_count = 2;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(2);
+  result.args[0] = expr_->to_proto();
+
+  result.args[1] = mode_.to_proto();
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+ReplaceWith::ReplaceWith(std::shared_ptr<Expr> expr, ReplaceMode mode)
+    : expr_(std::move(expr)), mode_(mode) {
+}
+
+google_firestore_v1_Value Sample::SampleMode::to_proto() const {
+  google_firestore_v1_Value result;
+  result.which_value_type = google_firestore_v1_Value_string_value_tag;
+  switch (mode_) {
+    case DOCUMENTS:
+      result.string_value = nanopb::MakeBytesArray("documents");
+      break;
+    case PERCENT:
+      result.string_value = nanopb::MakeBytesArray("percent");
+      break;
+  }
+  return result;
+}
+
+Sample::Sample(SampleMode mode, int64_t count, double percentage)
+    : mode_(mode), count_(count), percentage_(percentage) {
+}
+
+google_firestore_v1_Pipeline_Stage Sample::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("sample");
+
+  result.args_count = 2;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(2);
+
+  switch (mode_.mode()) {
+    case SampleMode::Mode::DOCUMENTS:
+      result.args[0].which_value_type =
+          google_firestore_v1_Value_integer_value_tag;
+      result.args[0].integer_value = count_;
+      break;
+    case SampleMode::Mode::PERCENT:
+      result.args[0].which_value_type =
+          google_firestore_v1_Value_double_value_tag;
+      result.args[0].double_value = percentage_;
+      break;
+  }
+
+  result.args[1] = mode_.to_proto();
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+Union::Union(std::shared_ptr<Pipeline> other) : other_(std::move(other)) {
+}
+
+google_firestore_v1_Pipeline_Stage Union::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("union");
+
+  result.args_count = 1;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(1);
+  result.args[0] = other_->to_proto();
+
+  result.options_count = 0;
+  result.options = nullptr;
+  return result;
+}
+
+Unnest::Unnest(std::shared_ptr<Expr> field,
+               std::shared_ptr<Expr> alias,
+               absl::optional<std::shared_ptr<Expr>> index_field)
+    : field_(std::move(field)),
+      alias_(alias),
+      index_field_(std::move(index_field)) {
+}
+
+google_firestore_v1_Pipeline_Stage Unnest::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray("unnest");
+
+  result.args_count = 2;
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(2);
+  result.args[0] = field_->to_proto();
+  result.args[1] = alias_->to_proto();
+
+  if (index_field_.has_value()) {
+    result.options_count = 1;
+    result.options =
+        nanopb::MakeArray<google_firestore_v1_Pipeline_Stage_OptionsEntry>(1);
+    result.options[0].key = nanopb::MakeBytesArray("index_field");
+    result.options[0].value = index_field_.value()->to_proto();
+  } else {
+    result.options_count = 0;
+    result.options = nullptr;
+  }
+
+  return result;
+}
+
+RawStage::RawStage(
+    std::string name,
+    std::vector<google_firestore_v1_Value> params,
+    std::unordered_map<std::string, std::shared_ptr<Expr>> options)
+    : name_(std::move(name)),
+      params_(std::move(params)),
+      options_(std::move(options)) {
+}
+
+google_firestore_v1_Pipeline_Stage RawStage::to_proto() const {
+  google_firestore_v1_Pipeline_Stage result;
+  result.name = nanopb::MakeBytesArray(name_);
+
+  result.args_count = static_cast<pb_size_t>(params_.size());
+  result.args = nanopb::MakeArray<google_firestore_v1_Value>(result.args_count);
+
+  for (size_t i = 0; i < result.args_count; i++) {
+    result.args[i] = params_[i];
+  }
+
+  nanopb::SetRepeatedField(
+      &result.options, &result.options_count, options_,
+      [](const std::pair<std::string, std::shared_ptr<Expr>>& entry) {
+        return _google_firestore_v1_Pipeline_Stage_OptionsEntry{
+            nanopb::MakeBytesArray(entry.first), entry.second->to_proto()};
+      });
+
+  return result;
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/Firestore/core/src/api/stages.h b/Firestore/core/src/api/stages.h
new file mode 100644
index 00000000000..be0cbf3e68b
--- /dev/null
+++ b/Firestore/core/src/api/stages.h
@@ -0,0 +1,349 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_STAGES_H_
+#define FIRESTORE_CORE_SRC_API_STAGES_H_
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/api/aggregate_expressions.h"
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/api/expressions.h"
+#include "Firestore/core/src/api/ordering.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class Stage {
+ public:
+  Stage() = default;
+  virtual ~Stage() = default;
+
+  virtual google_firestore_v1_Pipeline_Stage to_proto() const = 0;
+};
+
+class CollectionSource : public Stage {
+ public:
+  explicit CollectionSource(std::string path) : path_(std::move(path)) {
+  }
+  ~CollectionSource() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::string path_;
+};
+
+class DatabaseSource : public Stage {
+ public:
+  DatabaseSource() = default;
+  ~DatabaseSource() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+};
+
+class CollectionGroupSource : public Stage {
+ public:
+  explicit CollectionGroupSource(std::string collection_id)
+      : collection_id_(std::move(collection_id)) {
+  }
+  ~CollectionGroupSource() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::string collection_id_;
+};
+
+class DocumentsSource : public Stage {
+ public:
+  explicit DocumentsSource(std::vector<std::string> documents)
+      : documents_(std::move(documents)) {
+  }
+  ~DocumentsSource() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::vector<std::string> documents_;
+};
+
+class AddFields : public Stage {
+ public:
+  explicit AddFields(
+      std::unordered_map<std::string, std::shared_ptr<Expr>> fields)
+      : fields_(std::move(fields)) {
+  }
+  ~AddFields() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::unordered_map<std::string, std::shared_ptr<Expr>> fields_;
+};
+
+class AggregateStage : public Stage {
+ public:
+  AggregateStage(
+      std::unordered_map<std::string, std::shared_ptr<AggregateFunction>>
+          accumulators,
+      std::unordered_map<std::string, std::shared_ptr<Expr>> groups)
+      : accumulators_(std::move(accumulators)), groups_(std::move(groups)) {
+  }
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::unordered_map<std::string, std::shared_ptr<AggregateFunction>>
+      accumulators_;
+  std::unordered_map<std::string, std::shared_ptr<Expr>> groups_;
+};
+
+class Where : public Stage {
+ public:
+  explicit Where(std::shared_ptr<Expr> expr) : expr_(expr) {
+  }
+  ~Where() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::shared_ptr<Expr> expr_;
+};
+
+class FindNearestStage : public Stage {
+ public:
+  class DistanceMeasure {
+   public:
+    enum Measure { EUCLIDEAN, COSINE, DOT_PRODUCT };
+
+    explicit DistanceMeasure(Measure measure) : measure_(measure) {
+    }
+    google_firestore_v1_Value proto() const;
+
+   private:
+    Measure measure_;
+  };
+
+  FindNearestStage(
+      std::shared_ptr<Expr> property,
+      nanopb::SharedMessage<google_firestore_v1_Value> vector,
+      DistanceMeasure distance_measure,
+      std::unordered_map<std::string, google_firestore_v1_Value> options)
+      : property_(std::move(property)),
+        vector_(std::move(vector)),
+        distance_measure_(distance_measure),
+        options_(std::move(options)) {
+  }
+
+  ~FindNearestStage() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::shared_ptr<Expr> property_;
+  nanopb::SharedMessage<google_firestore_v1_Value> vector_;
+  DistanceMeasure distance_measure_;
+  std::unordered_map<std::string, google_firestore_v1_Value> options_;
+};
+
+class LimitStage : public Stage {
+ public:
+  explicit LimitStage(int32_t limit) : limit_(limit) {
+  }
+  ~LimitStage() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  int32_t limit_;
+};
+
+class OffsetStage : public Stage {
+ public:
+  explicit OffsetStage(int64_t offset) : offset_(offset) {
+  }
+  ~OffsetStage() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  int64_t offset_;
+};
+
+class SelectStage : public Stage {
+ public:
+  explicit SelectStage(
+      std::unordered_map<std::string, std::shared_ptr<Expr>> fields)
+      : fields_(std::move(fields)) {
+  }
+  ~SelectStage() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::unordered_map<std::string, std::shared_ptr<Expr>> fields_;
+};
+
+class SortStage : public Stage {
+ public:
+  explicit SortStage(std::vector<std::shared_ptr<Ordering>> orders)
+      : orders_(std::move(orders)) {
+  }
+  ~SortStage() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::vector<std::shared_ptr<Ordering>> orders_;
+};
+
+class DistinctStage : public Stage {
+ public:
+  explicit DistinctStage(
+      std::unordered_map<std::string, std::shared_ptr<Expr>> groups)
+      : groups_(std::move(groups)) {
+  }
+  ~DistinctStage() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::unordered_map<std::string, std::shared_ptr<Expr>> groups_;
+};
+
+class RemoveFieldsStage : public Stage {
+ public:
+  explicit RemoveFieldsStage(std::vector<Field> fields)
+      : fields_(std::move(fields)) {
+  }
+  ~RemoveFieldsStage() override = default;
+
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::vector<Field> fields_;
+};
+
+class ReplaceWith : public Stage {
+ public:
+  class ReplaceMode {
+   public:
+    enum Mode {
+      FULL_REPLACE,
+      MERGE_PREFER_NEST,
+      MERGE_PREFER_PARENT = FULL_REPLACE
+    };
+
+    explicit ReplaceMode(Mode mode) : mode_(mode) {
+    }
+    google_firestore_v1_Value to_proto() const;
+
+   private:
+    Mode mode_;
+  };
+
+  explicit ReplaceWith(
+      std::shared_ptr<Expr> expr,
+      ReplaceMode mode = ReplaceMode(ReplaceMode::Mode::FULL_REPLACE));
+  ~ReplaceWith() override = default;
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::shared_ptr<Expr> expr_;
+  ReplaceMode mode_;
+};
+
+class Sample : public Stage {
+ public:
+  class SampleMode {
+   public:
+    enum Mode { DOCUMENTS = 0, PERCENT };
+
+    explicit SampleMode(Mode mode) : mode_(mode) {
+    }
+
+    Mode mode() const {
+      return mode_;
+    }
+
+    google_firestore_v1_Value to_proto() const;
+
+   private:
+    Mode mode_;
+  };
+
+  Sample(SampleMode mode, int64_t count, double percentage);
+  ~Sample() override = default;
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  SampleMode mode_;
+  int64_t count_;
+  double percentage_;
+};
+
+class Union : public Stage {
+ public:
+  explicit Union(std::shared_ptr<Pipeline> other);
+  ~Union() override = default;
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::shared_ptr<Pipeline> other_;
+};
+
+class Unnest : public Stage {
+ public:
+  Unnest(std::shared_ptr<Expr> field,
+         std::shared_ptr<Expr> alias,
+         absl::optional<std::shared_ptr<Expr>> index_field);
+  ~Unnest() override = default;
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::shared_ptr<Expr> field_;
+  std::shared_ptr<Expr> alias_;
+  absl::optional<std::shared_ptr<Expr>> index_field_;
+};
+
+class RawStage : public Stage {
+ public:
+  RawStage(std::string name,
+           std::vector<google_firestore_v1_Value> params,
+           std::unordered_map<std::string, std::shared_ptr<Expr>> options);
+  ~RawStage() override = default;
+  google_firestore_v1_Pipeline_Stage to_proto() const override;
+
+ private:
+  std::string name_;
+  std::vector<google_firestore_v1_Value> params_;
+  std::unordered_map<std::string, std::shared_ptr<Expr>> options_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_STAGES_H_
diff --git a/Firestore/core/src/core/firestore_client.cc b/Firestore/core/src/core/firestore_client.cc
index c6dd50634c1..0c6ac315dea 100644
--- a/Firestore/core/src/core/firestore_client.cc
+++ b/Firestore/core/src/core/firestore_client.cc
@@ -575,6 +575,25 @@ void FirestoreClient::RunAggregateQuery(
   });
 }
 
+void FirestoreClient::RunPipeline(
+    const api::Pipeline& pipeline,
+    util::StatusOrCallback<api::PipelineSnapshot> callback) {
+  VerifyNotTerminated();
+
+  // Dispatch the result back onto the user dispatch queue.
+  auto async_callback =
+      [this, callback](const StatusOr<api::PipelineSnapshot>& status) {
+        if (callback) {
+          user_executor_->Execute([=] { callback(std::move(status)); });
+        }
+      };
+
+  worker_queue_->Enqueue(
+      [this, pipeline, async_callback = std::move(async_callback)] {
+        remote_store_->RunPipeline(pipeline, async_callback);
+      });
+}
+
 void FirestoreClient::AddSnapshotsInSyncListener(
     const std::shared_ptr<EventListener<Empty>>& user_listener) {
   worker_queue_->Enqueue([this, user_listener] {
diff --git a/Firestore/core/src/core/firestore_client.h b/Firestore/core/src/core/firestore_client.h
index d752deff66a..24c0e8c396a 100644
--- a/Firestore/core/src/core/firestore_client.h
+++ b/Firestore/core/src/core/firestore_client.h
@@ -23,6 +23,7 @@
 
 #include "Firestore/core/src/api/api_fwd.h"
 #include "Firestore/core/src/api/load_bundle_task.h"
+#include "Firestore/core/src/api/pipeline.h"
 #include "Firestore/core/src/bundle/bundle_serializer.h"
 #include "Firestore/core/src/core/core_fwd.h"
 #include "Firestore/core/src/core/database_info.h"
@@ -159,6 +160,9 @@ class FirestoreClient : public std::enable_shared_from_this<FirestoreClient> {
                          const std::vector<model::AggregateField>& aggregates,
                          api::AggregateQueryCallback&& result_callback);
 
+  void RunPipeline(const api::Pipeline& pipeline,
+                   util::StatusOrCallback<api::PipelineSnapshot> callback);
+
   /**
    * Adds a listener to be called when a snapshots-in-sync event fires.
    */
diff --git a/Firestore/core/src/nanopb/fields_array.h b/Firestore/core/src/nanopb/fields_array.h
index 3b89b2ecd06..29fdc1c66dd 100644
--- a/Firestore/core/src/nanopb/fields_array.h
+++ b/Firestore/core/src/nanopb/fields_array.h
@@ -227,6 +227,18 @@ inline const pb_field_t* FieldsArray<
   return google_firestore_v1_StructuredAggregationQuery_Aggregation_Count_fields;
 }
 
+template <>
+inline const pb_field_t*
+FieldsArray<google_firestore_v1_ExecutePipelineRequest>() {
+  return google_firestore_v1_ExecutePipelineRequest_fields;
+}
+
+template <>
+inline const pb_field_t*
+FieldsArray<google_firestore_v1_ExecutePipelineResponse>() {
+  return google_firestore_v1_ExecutePipelineResponse_fields;
+}
+
 template <>
 inline const pb_field_t* FieldsArray<google_firestore_v1_ExistenceFilter>() {
   return google_firestore_v1_ExistenceFilter_fields;
diff --git a/Firestore/core/src/remote/datastore.cc b/Firestore/core/src/remote/datastore.cc
index 47a8fb716b5..504beadbd99 100644
--- a/Firestore/core/src/remote/datastore.cc
+++ b/Firestore/core/src/remote/datastore.cc
@@ -63,6 +63,8 @@ const auto kRpcNameCommit = "/google.firestore.v1.Firestore/Commit";
 const auto kRpcNameLookup = "/google.firestore.v1.Firestore/BatchGetDocuments";
 const auto kRpcNameRunAggregationQuery =
     "/google.firestore.v1.Firestore/RunAggregationQuery";
+const auto kRpcNameExecutePipeline =
+    "/google.firestore.v1.Firestore/ExecutePipeline";
 
 std::unique_ptr<Executor> CreateExecutor() {
   return Executor::CreateSerial("com.google.firebase.firestore.rpc");
@@ -308,6 +310,54 @@ void Datastore::RunAggregateQueryWithCredentials(
   });
 }
 
+void Datastore::RunPipeline(
+    const api::Pipeline& pipeline,
+    util::StatusOrCallback<api::PipelineSnapshot>&& result_callback) {
+  ResumeRpcWithCredentials(
+      [this, pipeline, result_callback = std::move(result_callback)](
+          const StatusOr<AuthToken>& auth_token,
+          const std::string& app_check_token) mutable {
+        if (!auth_token.ok()) {
+          // result_callback(auth_token.status());
+          return;
+        }
+        RunPipelineWithCredentials(auth_token.ValueOrDie(), app_check_token,
+                                   pipeline, std::move(result_callback));
+      });
+}
+
+void Datastore::RunPipelineWithCredentials(
+    const credentials::AuthToken& auth_token,
+    const std::string& app_check_token,
+    const api::Pipeline& pipeline,
+    util::StatusOrCallback<api::PipelineSnapshot>&& callback) {
+  auto request = datastore_serializer_.EncodeExecutePipelineRequest(pipeline);
+  LOG_DEBUG("Run Pipeline: %s", request.ToString());
+
+  grpc::ByteBuffer message = MakeByteBuffer(request);
+  std::unique_ptr<GrpcUnaryCall> call_owning = grpc_connection_.CreateUnaryCall(
+      kRpcNameExecutePipeline, auth_token, app_check_token, std::move(message));
+  GrpcUnaryCall* call = call_owning.get();
+  active_calls_.push_back(std::move(call_owning));
+
+  call->Start(
+      [this, db = pipeline.firestore(), call, callback = std::move(callback)](
+          const StatusOr<grpc::ByteBuffer>& result) {
+        LogGrpcCallFinished("ExecutePipeline", call, result.status());
+        HandleCallStatus(result.status());
+
+        if (result.ok()) {
+          auto response = datastore_serializer_.DecodeExecutePipelineResponse(
+              result.ValueOrDie(), std::move(db));
+          callback(response);
+        } else {
+          callback(result.status());
+        }
+
+        RemoveGrpcCall(call);
+      });
+}
+
 void Datastore::ResumeRpcWithCredentials(const OnCredentials& on_credentials) {
   // Auth/AppCheck may outlive Firestore
   std::weak_ptr<Datastore> weak_this{shared_from_this()};
diff --git a/Firestore/core/src/remote/datastore.h b/Firestore/core/src/remote/datastore.h
index 7de64663d11..df912159eef 100644
--- a/Firestore/core/src/remote/datastore.h
+++ b/Firestore/core/src/remote/datastore.h
@@ -23,6 +23,7 @@
 #include <vector>
 
 #include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/api/pipeline.h"
 #include "Firestore/core/src/core/core_fwd.h"
 #include "Firestore/core/src/credentials/auth_token.h"
 #include "Firestore/core/src/credentials/credentials_fwd.h"
@@ -112,6 +113,10 @@ class Datastore : public std::enable_shared_from_this<Datastore> {
                          const std::vector<model::AggregateField>& aggregates,
                          api::AggregateQueryCallback&& result_callback);
 
+  void RunPipeline(
+      const api::Pipeline& pipeline,
+      util::StatusOrCallback<api::PipelineSnapshot>&& result_callback);
+
   /** Returns true if the given error is a gRPC ABORTED error. */
   static bool IsAbortedError(const util::Status& error);
 
@@ -195,6 +200,12 @@ class Datastore : public std::enable_shared_from_this<Datastore> {
       const std::vector<model::AggregateField>& aggregates,
       api::AggregateQueryCallback&& callback);
 
+  void RunPipelineWithCredentials(
+      const credentials::AuthToken& auth_token,
+      const std::string& app_check_token,
+      const api::Pipeline& pipeline,
+      util::StatusOrCallback<api::PipelineSnapshot>&& result_callback);
+
   using OnCredentials = std::function<void(
       const util::StatusOr<credentials::AuthToken>&, const std::string&)>;
   void ResumeRpcWithCredentials(const OnCredentials& on_credentials);
diff --git a/Firestore/core/src/remote/remote_objc_bridge.cc b/Firestore/core/src/remote/remote_objc_bridge.cc
index ae7fcb246ea..6cc675d4f7f 100644
--- a/Firestore/core/src/remote/remote_objc_bridge.cc
+++ b/Firestore/core/src/remote/remote_objc_bridge.cc
@@ -33,6 +33,7 @@
 #include "Firestore/core/src/remote/grpc_util.h"
 #include "Firestore/core/src/remote/watch_change.h"
 #include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
 #include "Firestore/core/src/util/status.h"
 #include "Firestore/core/src/util/statusor.h"
 #include "grpcpp/support/status.h"
@@ -383,6 +384,41 @@ util::StatusOr<ObjectValue> DatastoreSerializer::DecodeAggregateQueryResponse(
       aliasMap);
 }
 
+Message<google_firestore_v1_ExecutePipelineRequest>
+DatastoreSerializer::EncodeExecutePipelineRequest(
+    const firebase::firestore::api::Pipeline& pipeline) const {
+  Message<google_firestore_v1_ExecutePipelineRequest> result;
+  result->database = serializer_.EncodeDatabaseName();
+  result->which_pipeline_type =
+      google_firestore_v1_ExecutePipelineRequest_structured_pipeline_tag;
+  result->pipeline_type.structured_pipeline =
+      serializer_.EncodePipeline(pipeline);
+
+  return result;
+}
+
+util::StatusOr<api::PipelineSnapshot>
+DatastoreSerializer::DecodeExecutePipelineResponse(
+    const grpc::ByteBuffer& response,
+    std::shared_ptr<api::Firestore> db) const {
+  ByteBufferReader reader{response};
+  auto message =
+      Message<google_firestore_v1_ExecutePipelineResponse>::TryParse(&reader);
+  if (!reader.ok()) {
+    return reader.status();
+  }
+
+  LOG_DEBUG("Pipeline Response: %s", message.ToString());
+
+  auto snapshot = serializer_.DecodePipelineResponse(reader.context(), message);
+  if (!reader.ok()) {
+    return reader.status();
+  }
+
+  snapshot.SetFirestore(std::move(db));
+  return snapshot;
+}
+
 }  // namespace remote
 }  // namespace firestore
 }  // namespace firebase
diff --git a/Firestore/core/src/remote/remote_objc_bridge.h b/Firestore/core/src/remote/remote_objc_bridge.h
index 0aa2b93f988..96329c1ae25 100644
--- a/Firestore/core/src/remote/remote_objc_bridge.h
+++ b/Firestore/core/src/remote/remote_objc_bridge.h
@@ -32,6 +32,7 @@
 #include "Firestore/core/src/util/status_fwd.h"
 #include "grpcpp/support/byte_buffer.h"
 
+#include "Firestore/core/src/api/pipeline.h"
 #include "absl/container/flat_hash_map.h"
 
 namespace firebase {
@@ -150,6 +151,14 @@ class DatastoreSerializer {
     return serializer_;
   }
 
+  nanopb::Message<google_firestore_v1_ExecutePipelineRequest>
+  EncodeExecutePipelineRequest(
+      const firebase::firestore::api::Pipeline& pipeline) const;
+
+  util::StatusOr<api::PipelineSnapshot> DecodeExecutePipelineResponse(
+      const grpc::ByteBuffer& response,
+      std::shared_ptr<api::Firestore> db) const;
+
  private:
   Serializer serializer_;
 };
diff --git a/Firestore/core/src/remote/remote_store.cc b/Firestore/core/src/remote/remote_store.cc
index 86455fcd15e..1bf4370240b 100644
--- a/Firestore/core/src/remote/remote_store.cc
+++ b/Firestore/core/src/remote/remote_store.cc
@@ -390,6 +390,17 @@ void RemoteStore::RunAggregateQuery(
   }
 }
 
+void RemoteStore::RunPipeline(
+    const api::Pipeline& pipeline,
+    util::StatusOrCallback<api::PipelineSnapshot> result_callback) {
+  if (CanUseNetwork()) {
+    datastore_->RunPipeline(pipeline, std::move(result_callback));
+  } else {
+    result_callback(Status::FromErrno(Error::kErrorUnavailable,
+                                      "Failed to get result from server."));
+  }
+}
+
 // Write Stream
 
 void RemoteStore::FillWritePipeline() {
diff --git a/Firestore/core/src/remote/remote_store.h b/Firestore/core/src/remote/remote_store.h
index ae6bd7023bc..cd0d7b8e7ca 100644
--- a/Firestore/core/src/remote/remote_store.h
+++ b/Firestore/core/src/remote/remote_store.h
@@ -21,6 +21,7 @@
 #include <unordered_map>
 #include <vector>
 
+#include "Firestore/core/src/api/pipeline.h"
 #include "Firestore/core/src/core/transaction.h"
 #include "Firestore/core/src/local/target_data.h"
 #include "Firestore/core/src/model/model_fwd.h"
@@ -203,6 +204,9 @@ class RemoteStore : public TargetMetadataProvider,
                          const std::vector<model::AggregateField>& aggregates,
                          api::AggregateQueryCallback&& result_callback);
 
+  void RunPipeline(const api::Pipeline& pipeline,
+                   util::StatusOrCallback<api::PipelineSnapshot> callback);
+
   void OnWatchStreamOpen() override;
   void OnWatchStreamChange(
       const WatchChange& change,
diff --git a/Firestore/core/src/remote/serializer.cc b/Firestore/core/src/remote/serializer.cc
index f301a65e37f..889767b84ee 100644
--- a/Firestore/core/src/remote/serializer.cc
+++ b/Firestore/core/src/remote/serializer.cc
@@ -175,6 +175,15 @@ FieldPath InvalidFieldPath() {
   return FieldPath::EmptyPath();
 }
 
+absl::optional<SnapshotVersion> NotNoneVersionOrNullOpt(
+    const SnapshotVersion& version) {
+  if (version == SnapshotVersion::None()) {
+    return absl::nullopt;
+  } else {
+    return version;
+  }
+}
+
 }  // namespace
 
 Serializer::Serializer(DatabaseId database_id)
@@ -1197,6 +1206,18 @@ Serializer::DecodeCursorValue(google_firestore_v1_Cursor& cursor) const {
   return index_components;
 }
 
+google_firestore_v1_StructuredPipeline Serializer::EncodePipeline(
+    const api::Pipeline& pipeline) const {
+  google_firestore_v1_StructuredPipeline result;
+
+  result.pipeline = pipeline.to_proto().pipeline_value;
+
+  result.options_count = 0;
+  result.options = nullptr;
+
+  return result;
+}
+
 /* static */
 pb_bytes_array_t* Serializer::EncodeFieldPath(const FieldPath& field_path) {
   return EncodeString(field_path.CanonicalString());
@@ -1479,6 +1500,36 @@ bool Serializer::IsLocalDocumentKey(absl::string_view path) const {
          DocumentKey::IsDocumentKey(resource.PopFirst(5));
 }
 
+api::PipelineSnapshot Serializer::DecodePipelineResponse(
+    util::ReadContext* context,
+    const nanopb::Message<google_firestore_v1_ExecutePipelineResponse>& message)
+    const {
+  auto execution_time = DecodeVersion(context, message->execution_time);
+
+  std::vector<api::PipelineResult> results;
+  results.reserve(message->results_count);
+
+  for (pb_size_t i = 0; i < message->results_count; ++i) {
+    absl::optional<DocumentKey> key;
+    if (message->results[i].name != nullptr) {
+      key = DecodeKey(context, message->results[i].name);
+    }
+
+    auto create_time = DecodeVersion(context, message->results[i].create_time);
+    auto update_time = DecodeVersion(context, message->results[i].update_time);
+
+    auto value = ObjectValue::FromFieldsEntry(message->results[i].fields,
+                                              message->results[i].fields_count);
+    results.push_back({std::move(key),
+                       std::make_shared<ObjectValue>(std::move(value)),
+                       NotNoneVersionOrNullOpt(create_time),
+                       NotNoneVersionOrNullOpt(update_time),
+                       NotNoneVersionOrNullOpt(execution_time)});
+  }
+
+  return api::PipelineSnapshot(std::move(results), execution_time);
+}
+
 }  // namespace remote
 }  // namespace firestore
 }  // namespace firebase
diff --git a/Firestore/core/src/remote/serializer.h b/Firestore/core/src/remote/serializer.h
index c42c6c3ac1b..2105b7eb754 100644
--- a/Firestore/core/src/remote/serializer.h
+++ b/Firestore/core/src/remote/serializer.h
@@ -28,6 +28,7 @@
 #include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
 #include "Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h"
 #include "Firestore/Protos/nanopb/google/type/latlng.nanopb.h"
+#include "Firestore/core/src/api/pipeline.h"
 #include "Firestore/core/src/core/composite_filter.h"
 #include "Firestore/core/src/core/core_fwd.h"
 #include "Firestore/core/src/core/field_filter.h"
@@ -204,6 +205,9 @@ class Serializer {
       pb_bytes_array_t* parent,
       google_firestore_v1_StructuredQuery& query) const;
 
+  google_firestore_v1_StructuredPipeline EncodePipeline(
+      const api::Pipeline& pipeline) const;
+
   /**
    * Decodes the watch change. Modifies the provided proto to release
    * ownership of any Value messages.
@@ -241,6 +245,11 @@ class Serializer {
     return database_id_;
   }
 
+  api::PipelineSnapshot DecodePipelineResponse(
+      util::ReadContext* context,
+      const nanopb::Message<google_firestore_v1_ExecutePipelineResponse>&
+          message) const;
+
  private:
   friend class SerializerTest;