code: def test_flip_byte_order(self, dtype, actual_hex, expected_hex):
      def to_tensor(hex):
          return torch.frombuffer(bytes.fromhex(hex), dtype=dtype)
  
      assert_equal(
          utils._flip_byte_order(to_tensor(actual_hex)),
          to_tensor(expected_hex),
      )
  
imports: import contextlib
  import gzip
  import os
  import pathlib
  import re
  import tarfile
  import zipfile
  import pytest
  import torch
  import torchvision.datasets.utils
  from common_utils import assert_equal
  from torch._utils_internal import get_file_path_2
  from torchvision.datasets.folder import make_dataset
  from torchvision.datasets.utils import _COMPRESSED_FILE_OPENERS
label_desc: Use image node_id 16 for calling the TestDatasetsUtils obj's underlying member method code with example usage: obj.test_flip_byte_order(dtype, actual_hex, expected_hex) and returns: torch