langchain/callbacks/mlflow_callback.py/MlflowLogger/text
class MlflowLogger:    def text(self, text: str, filename: str) -> None:
        """To log the input text as text file artifact."""
        with self.mlflow.start_run(
            run_id=self.run.info.run_id, experiment_id=self.mlf_expid
        ):
            self.mlflow.log_text(text, f"{filename}.txt")