MAINT: Fix pydantic serialization warning (#824)

src/fmu/dataio/_model/schema.py

@@ -129,10 +129,6 @@ def _deprecation_warning(self) -> InternalUnsetData:
         return self
 
 
-class InternalAnyData(data.AnyData):
-    root: InternalUnsetData  # type: ignore
-
-
 class InternalFMU(fields.FMU):
     # This class is identical to the one used in the schema
     # exept for more fmu context values beeing allowed internally
@@ -156,7 +152,7 @@ class InternalObjectMetadata(JsonSchemaMetadata):
     fmu: Optional[InternalFMU]
     masterdata: Optional[fields.Masterdata]
     access: Optional[fields.SsdlAccess]
-    data: Union[data.AnyData, InternalAnyData]
+    data: Union[InternalUnsetData, data.AnyData]  # keep InternalUnsetData first here
     file: fields.File
     display: fields.Display
     tracklog: fields.Tracklog

src/fmu/dataio/providers/objectdata/_base.py

@@ -19,7 +19,7 @@
     GlobalConfiguration,
     StratigraphyElement,
 )
-from fmu.dataio._model.schema import AllowedContent, InternalAnyData
+from fmu.dataio._model.schema import AllowedContent, InternalUnsetData
 from fmu.dataio._utils import generate_description
 from fmu.dataio.providers._base import Provider
 
@@ -56,7 +56,7 @@ class ObjectDataProvider(Provider):
     # result properties; the most important is metadata which IS the 'data' part in
     # the resulting metadata. But other variables needed later are also given
     # as instance properties in addition (for simplicity in other classes/functions)
-    _metadata: AnyData | InternalAnyData | None = field(default=None)
+    _metadata: AnyData | InternalUnsetData | None = field(default=None)
     name: str = field(default="")
     time0: datetime | None = field(default=None)
     time1: datetime | None = field(default=None)
@@ -109,7 +109,7 @@ def __post_init__(self) -> None:
         metadata["description"] = generate_description(self.dataio.description)
 
         self._metadata = (
-            InternalAnyData.model_validate(metadata)
+            InternalUnsetData.model_validate(metadata)
             if metadata["content"] == "unset"
             else AnyData.model_validate(metadata)
         )
@@ -157,7 +157,7 @@ def get_bbox(self) -> BoundingBox2D | BoundingBox3D | None:
     def get_spec(self) -> AnySpecification | None:
         raise NotImplementedError
 
-    def get_metadata(self) -> AnyData | InternalAnyData:
+    def get_metadata(self) -> AnyData | InternalUnsetData:
         assert self._metadata is not None
         return self._metadata