code: def test_longlong(self):
      # test some 64-bit values, positive and negative
      self.check_type(c_longlong, 5948291757245277467)
      self.check_type(c_longlong, -5229388909784190580)
      self.check_type(c_longlong, 42)
      self.check_type(c_longlong, -42)
  
imports: import functools
  import unittest
  from ctypes import *
  from ctypes.test import need_symbol
  import _ctypes_test
label_desc: Use image node_id 11 for calling the Callbacks obj's underlying member method code with example usage: obj.test_longlong() without return types