code: def destroy_comms(self):
      # Wait for all ranks to reach here before starting shutdown.
      dist.barrier()
      dist.destroy_process_group()
  
imports: import os
  import sys
  from functools import wraps, partial
  import torch
  import torch.distributed
  from torch.testing._internal.common_distributed import MultiProcessTestCase, TEST_SKIPS
  from torch.testing._internal.common_utils import run_tests, TEST_WITH_DEV_DBG_ASAN
label_desc: Use image node_id 5 for calling the TestObjectCollectives obj's underlying member method code with example usage: obj.destroy_comms() without return types