code: def tearDown(self):
      pass
  
imports: import os
  import sys
  import unittest
  from numpy.testing import assert_allclose
  from numpy.testing import assert_array_equal
  from numpy.testing import assert_equal
  from numpy.testing import assert_raises
  import numpy
  from sklearn.utils import shuffle
  from combo.models.score_comb import aom
  from combo.models.score_comb import moa
  from combo.models.score_comb import average
  from combo.models.score_comb import maximization
  from combo.models.score_comb import median
  from combo.models.score_comb import majority_vote
label_desc: Use image node_id 6 for calling the TestMOA obj's underlying member method code with example usage: obj.tearDown() without return types