langchain/callbacks/mlflow_callback.py/MlflowLogger/jsonf
class MlflowLogger:    def jsonf(self, data: Dict[str, Any], filename: str) -> None:
        """To log the input data as json file artifact."""
        with self.mlflow.start_run(
            run_id=self.run.info.run_id, experiment_id=self.mlf_expid
        ):
            self.mlflow.log_dict(data, f"{filename}.json")