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