code: def min_train_series_length(self) -> int:
      return 30
  
file_path: darts/darts/models/forecasting/arima.py
imports: from typing import Optional, Tuple
  import numpy
  from statsmodels import __version_tuple__
  from statsmodels.tsa.arima.model import ARIMA
  from darts.logging import get_logger
  from darts.models.forecasting.forecasting_model import TransferableFutureCovariatesLocalForecastingModel
  from darts.timeseries import TimeSeries
label_desc: Use image node_id 6 for calling the ARIMA obj's underlying member method code with example usage: obj.min_train_series_length() and returns: int