def model_dump(self, *args, **kwargs) -> dict[str, Any]:
        """Override model_dump to convert size to string."""
        data = super().model_dump(*args, **kwargs)
        if data.get("size") is not None:
            data["size"] = str(data["size"])
        return data
Override model_dump to convert size to string.
backend/airweave/platform/entities/google_drive.py