def save_dir(self) -> Optional[str]:
        """The root file directory in which MLflow experiments are saved.

        Return:
            Local path to the root experiment directory if the tracking uri is local.
            Otherwise returns `None`.

        """
        if self._tracking_uri.startswith(LOCAL_FILE_URI_PREFIX):
            return self._tracking_uri[len(LOCAL_FILE_URI_PREFIX) :]
        return None
The root file directory in which MLflow experiments are saved.

        Return:
            Local path to the root experiment directory if the tracking uri is local.
            Otherwise returns `None`.

        
src/lightning/pytorch/loggers/mlflow.py