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(b" ", 4294967295), 1431655765)
      self.assertEqual(self.U(), 4294967295)
  
imports: import _ctypes_test
  import ctypes
  import unittest
  from ctypes import CDLL, c_byte, c_ubyte, c_char, c_short, c_ushort, c_int, c_uint, c_long, c_ulong, c_longlong, c_ulonglong, c_float, c_double, c_longdouble
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