code: def _validate_error(
      self, exception, op_type, rank, tensor, verify_diff=True
  ):
      err = str(exception)
      self.assertTrue(
          op_type in err,
          f"Got {err} but expected {op_type} to be in error.",
      )
      # User doesn't call barrier with tensor.
      if op_type != "BARRIER":
          self.assertTrue(
              f"{list(tensor.shape)}" in err,
              f"Did not find shapes {list(tensor.shape)} in error {err}",
          )
          # For CUDA, only assert on device type, not index
          if "cuda" in str(tensor.device):
              self.assertTrue(
                  "cuda" in err,
                  f"Did not find cuda device in error {err}",
              )
          else:
              self.assertTrue(
                  str(tensor.device) in err,
                  f"Did not find tensor device {str(tensor.device)} in error {err}",
              )
          # C++ and python type strings are not exactly the same.
          if "float" in str(tensor.dtype):
              self.assertTrue("Float" in err, "Expected Float type")
          elif "int" in str(tensor.dtype):
              self.assertTrue("Long" in err, "Expected Long type")
          else:
              self.fail(
                  f"Unexpected dtype {str(tensor.dtype)} for error {err}"
              )
  
          # Ensure sequence number is logged in error
          self.assertTrue("SequenceNumber" in err)
          # Ensure info about how collectives diff is in the error.
          if verify_diff:
              self.assertTrue(
                  "Collectives differ in the following" in err,
                  f"Got error {err}",
              )
  
imports: import os
  import sys
  from datetime import timedelta
  import torch
  import torch.distributed
  from test_c10d_common import LOOPBACK
  from torch.testing._internal.common_distributed import create_device, MultiProcessTestCase, requires_gloo, requires_nccl, skip_if_lt_x_gpu, with_dist_debug_levels
  from torch.testing._internal.common_utils import run_tests, TEST_WITH_DEV_DBG_ASAN
label_desc: Use image node_id 2 for calling the AbstractProcessGroupWrapperTest obj's underlying member method code with example usage: obj._validate_error(exception, op_type, rank, tensor, verify_diff) without return types