langchain/tools/powerbi/tool.py/InfoPowerBITool/_run
class InfoPowerBITool:    def _run(
        self,
        tool_input: str,
        run_manager: Optional[CallbackManagerForToolRun] = None,
    ) -> str:
        """Get the schema for tables in a comma-separated list."""
        return self.powerbi.get_table_info(tool_input.split(", "))