Add stub test to support trailing slashes

Author: mderriey

test/Microsoft.OpenApi.Tests/Services/OpenApiUrlTreeNodeTests.cs

@@ -466,5 +466,23 @@ public async Task VerifyDiagramFromSampleOpenAPI()
 
             await Verifier.Verify(diagram);
         }
+
+        [Fact]
+        public void SupportsTrailingSlashesInPath()
+        {
+            var openApiDocument = new OpenApiDocument
+            {
+                Paths = new()
+                {
+                    ["/cars/{car-id}/build/"] = new()
+                }
+            };
+
+            var label1 = "trailing-slash";
+            var rootNode = OpenApiUrlTreeNode.Create(openApiDocument, label1);
+            var buildNode = rootNode.Children["cars"].Children["{car-id}"].Children["build"];
+
+            // Should buildNode have a path of "build/" or should it have a child with an empty string key?
+        }
     }
 }