code: def test_all_gather_object(self):
      output = [None] * dist.get_world_size()
      dist.all_gather_object(object_list=output, obj=self.rank)
  
      for i, v in enumerate(output):
          self.assertEqual(i, v, f"rank: {self.rank}")
  
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 7 for calling the TestObjectCollectives obj's underlying member method code with example usage: obj.test_all_gather_object() without return types