langchain/tools/scenexplain/tool.py/SceneXplainTool/_arun
class SceneXplainTool:    async def _arun(
        self, query: str, run_manager: Optional[AsyncCallbackManagerForToolRun] = None
    ) -> str:
        """Use the tool asynchronously."""
        raise NotImplementedError("SceneXplainTool does not support async")