code: def not_consecutive_group_numbers():
      return np.array([0, 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 2, 2, 2, 2])
  
imports: import numpy
  import pytest
  from sklearn.dummy import DummyClassifier
  from sklearn.model_selection import cross_val_score
  from mlxtend.evaluate import GroupTimeSeriesSplit
label_desc: Use image node_id 5 for calling a global function with example usage: not_consecutive_group_numbers() and returns: np