code: def test_matches_pytorch_fp64(self):
      self.test_matches_pytorch(
          rtol=1.3e-6,
          atol=1e-5,
          model_dtype=torch.float64,
          optim_dtype=torch.float32,
      )
  
imports: from contextlib import contextmanager
  import io
  from typing import Callable, Optional, Tuple
  import unittest
  import warnings
  import torch
  from torch.testing._internal import common_utils
  from apex.transformer.testing.distributed_test_base import NcclDistributedTestBase
label_desc: Use image node_id 6 for calling the TestDistributedFusedAdam obj's underlying member method code with example usage: obj.test_matches_pytorch_fp64() without return types