code: def test_copy(self):
      dup = self.s.copy()
      self.assertEqual(self.s, dup)
      self.assertNotEqual(id(self.s), id(dup))
  
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 24 for calling the TestWeakSet obj's underlying member method code with example usage: obj.test_copy() without return types