code: def tearDown(self):
      sys.version = self.save_version
      sys._git = self.save_git
      sys.platform = self.save_platform
  
imports: import os
  import copy
  import pickle
  import platform
  import subprocess
  import sys
  import unittest
  from unittest import mock
  from test import support
  from test.support import os_helper
label_desc: Use image node_id 12 for calling the PlatformTest obj's underlying member method code with example usage: obj.tearDown() without return types