def stopping_metric(self):
        """
        Metric to use for early stopping (AUTO: logloss for classification, deviance for regression). Note that custom
        and custom_increasing can only be used in GBM and DRF with the Python client.

        One of: ``"auto"``, ``"deviance"``, ``"logloss"``, ``"mse"``, ``"rmse"``, ``"mae"``, ``"rmsle"``, ``"auc"``,
        ``"lift_top_group"``, ``"misclassification"``, ``"mean_per_class_error"``, ``"custom"``, ``"custom_increasing"``
        (default: ``"auto"``).
        """
        return self._parms.get("stopping_metric")