def _fit_scorers(
        self, list_series: Sequence[TimeSeries], list_pred: Sequence[TimeSeries]
    ):
        """Train the fittable scorers using model forecasts"""
        for scorer in self.scorers:
            if scorer.is_trainable:
                scorer.fit_from_prediction(list_series, list_pred)
Train the fittable scorers using model forecasts
darts/ad/anomaly_model/anomaly_model.py