code: def tearDown(self):
      sys.path[:] = self.sys_path
      self._cleanup_testfn()
      if self.uname is not None:
          os.uname = self.uname
      else:
          del os.uname
      os.name = self.name
      sys.platform = self.platform
      sys.version = self.version
      sys._framework = self._framework
      os.sep = self.sep
      os.path.join = self.join
      os.path.isabs = self.isabs
      os.path.splitdrive = self.splitdrive
      sysconfig._CONFIG_VARS = self._config_vars[0]
      sysconfig._CONFIG_VARS.clear()
      sysconfig._CONFIG_VARS.update(self._config_vars[1])
      for var, value in self._changed_envvars:
          os.environ[var] = value
      for var in self._added_envvars:
          os.environ.pop(var, None)
  
      super(TestSysConfig, self).tearDown()
  
imports: import unittest
  import sys
  import os
  import subprocess
  import shutil
  from copy import copy
  from test.support import captured_stdout, PythonSymlink, requires_subprocess, is_wasi
  from test.support.import_helper import import_module
  from test.support.os_helper import TESTFN, unlink, skip_unless_symlink, change_cwd
  import sysconfig
  from sysconfig import get_paths, get_platform, get_config_vars, get_path, get_path_names, _INSTALL_SCHEMES, get_default_scheme, get_scheme_names, get_config_var, _expand_vars, _get_preferred_schemes
  from sysconfig.__main__ import _main, _parse_makefile
  import _imp
  import _osx_support
  import _sysconfig
label_desc: Use image node_id 2 for calling the TestSysConfig obj's underlying member method code with example usage: obj.tearDown() without return types