code: def test_second_stop_call(self):
      stopping_criterion = ClassificationChange(2)
  
      first_predictions = np.array([0, 1, 1, 0])
      second_predictions = np.array([0, 1, 1, 1])
  
      stopping_criterion.stop(predictions=first_predictions)
      stop = stopping_criterion.stop(predictions=second_predictions)
      self.assertFalse(stop)
  
      assert_array_equal(
          second_predictions, stopping_criterion.last_predictions
      )
  
imports: import unittest
  import numpy
  from numpy.testing import assert_array_equal
  from small_text.stopping_criteria.change import ClassificationChange
  from small_text.utils.labels import list_to_csr
  from tests.utils.testing import assert_csr_matrix_equal
label_desc: Use image node_id 2 for calling the ClassificationChangeSingleLabelStopTest obj's underlying member method code with example usage: obj.test_second_stop_call() without return types