code: def test_long(self):
      self.check_type(c_long, 42)
      self.check_type(c_long, -42)
  
imports: import functools
  import unittest
  from ctypes import *
  from ctypes.test import need_symbol
  import _ctypes_test
label_desc: Use image node_id 9 for calling the Callbacks obj's underlying member method code with example usage: obj.test_long() without return types