code: def test_uuid1_bogus_return_value(self):
      with self.mock_generate_time_safe(3):
          u = self.uuid.uuid1()
          self.assertEqual(u.is_safe, self.uuid.SafeUUID.unknown)
  
imports: import unittest
  from test import support
  from test.support import import_helper
  import builtins
  import contextlib
  import copy
  import enum
  import io
  import os
  import pickle
  import sys
  import weakref
  from unittest import mock
label_desc: Use image node_id 14 for calling the BaseTestUUID obj's underlying member method code with example usage: obj.test_uuid1_bogus_return_value() without return types