code: def test_invalid_method_get_spec(self):
      class C:
          def m2(**kwargs):
              pass
  
      class Test:
          def __call__(*, a):
              pass
  
      mtip = calltip._invalid_method
      self.assertEqual(get_spec(C().m2), mtip)
      self.assertEqual(get_spec(Test()), mtip)
  
imports: from idlelib import calltip
  import unittest
  from unittest.mock import Mock
  import textwrap
  import types
  import re
  from idlelib.idle_test.mock_tk import Text
  from test.support import MISSING_C_DOCSTRINGS
label_desc: Use image node_id 11 for calling the Get_argspecTest obj's underlying member method code with example usage: obj.test_invalid_method_get_spec() without return types