code: def test(self):
      self._func()
  
imports: from __future__ import absolute_import, division, print_function
  import six
  import functools
  import inspect
  import os
  import sys
  import shutil
  import warnings
  import unittest
  import matplotlib
  import matplotlib.style
  import matplotlib.units
  import matplotlib.testing
  from matplotlib import cbook
  from matplotlib import ticker
  from matplotlib import pyplot
  from matplotlib import ft2font
  from matplotlib.testing.compare import comparable_formats, compare_images, make_test_filename
  from .None import _copy_metadata, is_called_from_pytest
  from .exceptions import ImageComparisonFailure
label_desc: Use image node_id 3 for calling the CleanupTest obj's underlying member method code with example usage: obj.test() without return types