code: def tearDown(self):
      super().tearDown()
      dist.destroy_process_group()
  
file_path: pytorch/test/distributed/_tensor/debug/test_comm_mode.py
imports: import torch
  import torch.distributed
  import torch.distributed._functional_collectives
  import torch.nn
  from torch.distributed._tensor.debug.comm_mode import CommDebugMode
  from torch.testing._internal.common_utils import run_tests, TestCase
  from torch.testing._internal.distributed._tensor.common_dtensor import MLPModule
  from torch.testing._internal.distributed.fake_pg import FakeStore
label_desc: Use image node_id 1 for calling the TestCommMode obj's underlying member method code with example usage: obj.tearDown() without return types