code: def test_multiclass_stress_test(self):
      self._classifier_stress_test()
  
imports: import itertools
  import pytest
  import pandas
  import unittest
  from coremltools._deps import _HAS_SKLEARN, _HAS_XGBOOST
  from coremltools.models.utils import evaluate_classifier, evaluate_classifier_with_probabilities, _macos_version, _is_macos
label_desc: Use image node_id 3 for calling the BoostedTreeMultiClassClassificationBostonHousingXGboostNumericTest obj's underlying member method code with example usage: obj.test_multiclass_stress_test() without return types