code: def setUp(self):
      super().setUp()
      self.previous_hub_dir = torch.hub.get_dir()
      self.tmpdir = tempfile.TemporaryDirectory("hub_dir")
      torch.hub.set_dir(self.tmpdir.name)
      self.trusted_list_path = os.path.join(
          torch.hub.get_dir(), "trusted_list"
      )
  
imports: import unittest
  from unittest.mock import patch
  import os
  import tempfile
  import warnings
  import torch
  import torch.hub
  from torch.testing._internal.common_utils import retry, IS_SANDCASTLE, TestCase
label_desc: Use image node_id 1 for calling the TestHub obj's underlying member method code with example usage: obj.setUp() without return types