code: def test_hash(self):
      self.assertRaises(TypeError, hash, self.s)
  
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 22 for calling the TestWeakSet obj's underlying member method code with example usage: obj.test_hash() without return types