code: def tearDown(self):
      super().tearDown()
      os.environ["TORCH_DIST_INIT_BARRIER"] = "0"
  
imports: import os
  import sys
  import torch
  import torch.distributed
  from torch._C._distributed_c10d import ReduceOp
  from unittest import skip, SkipTest
  import operator
  from functools import reduce
  import threading
  import torch.autograd
  from torch.testing._internal.common_distributed import spawn_threads_and_init_comms, MultiThreadedTestCase, skip_if_lt_x_gpu
  from torch.testing._internal.common_utils import TestCase, run_tests, IS_SANDCASTLE
label_desc: Use image node_id 3 for calling the TestCollectivesWithBaseClass obj's underlying member method code with example usage: obj.tearDown() without return types