code: def test_ubyte_plus(self):
      self._dll.tf_bB.restype = c_ubyte
      self._dll.tf_bB.argtypes = (c_byte, c_ubyte)
      self.assertEqual(self._dll.tf_bB(0, 255), 85)
      self.assertEqual(self.U(), 255)
  
imports: import unittest
  from ctypes import *
  from ctypes.test import need_symbol
  import _ctypes_test
label_desc: Use image node_id 6 for calling the CFunctions obj's underlying member method code with example usage: obj.test_ubyte_plus() without return types