def min_train_series_length(self) -> int:
        """
        Class property defining the minimum required length for the training series;
        overriding the default value of 3 of ForecastingModel
        """
        return (
            self.input_chunk_length + self.output_chunk_length + self.output_chunk_shift
        )

        Class property defining the minimum required length for the training series;
        overriding the default value of 3 of ForecastingModel
        
darts/models/forecasting/torch_forecasting_model.py