code: def test_super(self):
      sentinel = object()
  
      class A:
          def method(self):
              return sentinel
  
      class C(A):
          def method(self, /):
              return super().method()
  
      self.assertEqual(C().method(), sentinel)
  
imports: import dis
  import pickle
  import unittest
  from test.support import check_syntax_error
label_desc: Use image node_id 28 for calling the PositionalOnlyTestCase obj's underlying member method code with example usage: obj.test_super() and returns: sentinel, super