manual mapping (#14422)

libs/core/langchain_core/outputs/chat_generation.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import Any, Dict, Literal
+from typing import Any, Dict, List, Literal
 
 from langchain_core.messages import BaseMessage, BaseMessageChunk
 from langchain_core.outputs.generation import Generation
@@ -27,6 +27,11 @@ class ChatGeneration(Generation):
             raise ValueError("Error while initializing ChatGeneration") from e
         return values
 
+    @classmethod
+    def get_lc_namespace(cls) -> List[str]:
+        """Get the namespace of the langchain object."""
+        return ["langchain", "schema", "output"]
+
 
 class ChatGenerationChunk(ChatGeneration):
     """A ChatGeneration chunk, which can be concatenated with other
@@ -41,6 +46,11 @@ class ChatGenerationChunk(ChatGeneration):
     type: Literal["ChatGenerationChunk"] = "ChatGenerationChunk"  # type: ignore[assignment] # noqa: E501
     """Type is used exclusively for serialization purposes."""
 
+    @classmethod
+    def get_lc_namespace(cls) -> List[str]:
+        """Get the namespace of the langchain object."""
+        return ["langchain", "schema", "output"]
+
     def __add__(self, other: ChatGenerationChunk) -> ChatGenerationChunk:
         if isinstance(other, ChatGenerationChunk):
             generation_info = (

libs/core/langchain_core/outputs/generation.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import Any, Dict, Literal, Optional
+from typing import Any, Dict, List, Literal, Optional
 
 from langchain_core.load import Serializable
 
@@ -24,10 +24,20 @@ class Generation(Serializable):
         """Return whether this class is serializable."""
         return True
 
+    @classmethod
+    def get_lc_namespace(cls) -> List[str]:
+        """Get the namespace of the langchain object."""
+        return ["langchain", "schema", "output"]
+
 
 class GenerationChunk(Generation):
     """A Generation chunk, which can be concatenated with other Generation chunks."""
 
+    @classmethod
+    def get_lc_namespace(cls) -> List[str]:
+        """Get the namespace of the langchain object."""
+        return ["langchain", "schema", "output"]
+
     def __add__(self, other: GenerationChunk) -> GenerationChunk:
         if isinstance(other, GenerationChunk):
             generation_info = (