BREAKING CHANGE: Remove get_data and validate_structured_result from StreamedRunResult (#2445)

Author: Kludex

docs/changelog.md

@@ -18,6 +18,9 @@ See [#2440](https://github.com/pydantic/pydantic-ai/pull/2440) - The `next` meth
 
 See [#2443](https://github.com/pydantic/pydantic-ai/pull/2443) - The `data` property was removed from the `FinalResult` class. Use `output` instead.
 
+See [#2445](https://github.com/pydantic/pydantic-ai/pull/2445) - The `get_data` and `validate_structured_result` methods were removed from the
+`StreamedRunResult` class. Use `get_output` and `validate_structured_output` instead.
+
 ### v0.5.0 (2025-08-04)
 
 See [#2388](https://github.com/pydantic/pydantic-ai/pull/2388) - The `source` field of an `EvaluationResult` is now of type `EvaluatorSpec` rather than the actual source `Evaluator` instance, to help with serialization/deserialization.

pydantic_ai_slim/pydantic_ai/result.py

@@ -460,10 +460,6 @@ async def get_output(self) -> OutputDataT:
         await self._marked_completed(self._stream_response.get())
         return output
 
-    @deprecated('`get_data` is deprecated, use `get_output` instead.')
-    async def get_data(self) -> OutputDataT:
-        return await self.get_output()
-
     def usage(self) -> Usage:
         """Return the usage of the whole run.
 
@@ -476,12 +472,6 @@ def timestamp(self) -> datetime:
         """Get the timestamp of the response."""
         return self._stream_response.timestamp()
 
-    @deprecated('`validate_structured_result` is deprecated, use `validate_structured_output` instead.')
-    async def validate_structured_result(
-        self, message: _messages.ModelResponse, *, allow_partial: bool = False
-    ) -> OutputDataT:
-        return await self.validate_structured_output(message, allow_partial=allow_partial)
-
     async def validate_structured_output(
         self, message: _messages.ModelResponse, *, allow_partial: bool = False
     ) -> OutputDataT: