langchain/tools/sql_database/tool.py/ListSQLDatabaseTool/_arun
class ListSQLDatabaseTool:    async def _arun(
        self,
        tool_input: str = "",
        run_manager: Optional[AsyncCallbackManagerForToolRun] = None,
    ) -> str:
        raise NotImplementedError("ListTablesSqlDbTool does not support async")