code: def cleanup_testfn(self):
      path = test.test_support.TESTFN
      if os.path.isfile(path):
          os.remove(path)
      elif os.path.isdir(path):
          shutil.rmtree(path)
  
imports: import StringIO
  import distutils.core
  import os
  import shutil
  import sys
  import test.test_support
  from test.test_support import captured_stdout, run_unittest
  import unittest
  from distutils.tests import support
  from distutils import log
label_desc: Use image node_id 3 for calling the CoreTestCase obj's underlying member method code with example usage: obj.cleanup_testfn() without return types