code: def test_abc(self):
      self.assertIsInstance(self.s, Set)
      self.assertIsInstance(self.s, MutableSet)
  
imports: import unittest
  from weakref import WeakSet
  import copy
  import string
  from collections import UserString
  from collections.abc import Set, MutableSet
  import gc
  import contextlib
  from test import support
label_desc: Use image node_id 46 for calling the TestWeakSet obj's underlying member method code with example usage: obj.test_abc() without return types