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