code: def __call__(self, *args, **kwargs):
      self.called = True
  
file_path: catboost/contrib/tools/python/src/Lib/idlelib/idle_test/test_parenmatch.py
imports: import unittest
  from test.test_support import requires
  from Tkinter import Tk, Text
  from idlelib.ParenMatch import ParenMatch
label_desc: Use image node_id 2 for calling the Mock obj's underlying member method code with example usage: obj.__call__() without return types