code: def test_ulonglong(self):
      # test some 64-bit values, with and without msb set.
      self.check_type(c_ulonglong, 10955412242170339782)
      self.check_type(c_ulonglong, 3665885499841167458)
      self.check_type(c_ulonglong, 42)
  
imports: import functools
  import unittest
  from ctypes import *
  from ctypes.test import need_symbol
  import _ctypes_test
label_desc: Use image node_id 12 for calling the Callbacks obj's underlying member method code with example usage: obj.test_ulonglong() without return types