def METHOD_NAME(
    self,
    fh=None,
    X=None,
):
    """Predict forecast.
    Parameters
    ----------
    fh : int, list or np.array, optional (default=None)
        The forecasters horizon with the steps ahead to to predict.
    X : pd.DataFrame, optional (default=None)
        Exogenous variables are ignored.
    Returns
    -------
    forecast : pd.series
        Predicted forecasts.
    """
    len_fh = len(self.fh)
    f = self._f
    # Predicting future forecasts:to_numpy()
    y_pred = np.full(len_fh, f[-1])
    index = self.fh.to_absolute_index(self.cutoff)
    return pd.Series(y_pred, index=index, name=self._y.name)