code: def series_with_dt_index(n):
      """Helper fn to create a monotonic series with Datetime index"""
      time_column = []
      date = datetime.date(2022, 1, 1)
  
      for i in range(n):
          time_column.append(date + datetime.timedelta(days=i))
  
      return pd.Series(range(n), index=time_column)
  
imports: import numpy
  import pandas
  from pmdarima.arima import ARIMA, auto_arima, AutoARIMA, ARMAtoMA
  from pmdarima.arima import _validation
  from pmdarima.compat.pytest import pytest_error_str
  from pmdarima.datasets import load_lynx, load_wineind, load_heartrate
  from numpy.random import RandomState
  from numpy.testing import assert_array_almost_equal, assert_almost_equal, assert_allclose
  from statsmodels import api
  from sklearn.metrics import mean_squared_error
  import datetime
  import joblib
  import os
  import pickle
  import pytest
  import tempfile
  import time
label_desc: Use image node_id 1 for calling a global function with example usage: series_with_dt_index(n) and returns: pd