code: def test_ulong_plus(self):
      self._dll.tf_bL.restype = c_ulong
      self._dll.tf_bL.argtypes = (c_char, c_ulong)
      self.assertEqual(self._dll.tf_bL(" ", 4294967295), 1431655765)
      self.assertEqual(self.U(), 4294967295)
  
imports: import unittest
  from ctypes import *
  from ctypes.test import need_symbol
  import _ctypes_test
label_desc: Use image node_id 18 for calling the CFunctions obj's underlying member method code with example usage: obj.test_ulong_plus() without return types