code: def setUpClass(cls):
      requires("gui")
      cls.root = Tk()
      cls.root.withdraw()
      _initializeTkVariantTests(cls.root)
  
file_path: catboost/contrib/tools/python/src/Lib/idlelib/idle_test/test_configdialog.py
imports: import unittest
  from test.test_support import requires
  from Tkinter import Tk
  from idlelib.configDialog import ConfigDialog
  from idlelib.macosxSupport import _initializeTkVariantTests
label_desc: Use image node_id 1 for calling the ConfigDialogTest obj's underlying member method code with example usage: obj.setUpClass(cls) without return types