def serialize_output_entity_definition_ids(
        self, output_entity_definition_ids: Optional[List[UUID]]
    ) -> Optional[List[str]]:
        """Convert UUID list to string list during serialization."""
        if output_entity_definition_ids is None:
            return None
        return [str(uuid) for uuid in output_entity_definition_ids]
Convert UUID list to string list during serialization.
backend/airweave/schemas/source.py