code: def setup_module():
      global FILEPATH_DIX
      try:
          FILEPATH_DIX, _, _ = get_fnames("gold_standard_tracks")
      except (HTTPError, URLError) as e:
          FILEPATH_DIX = None
          error_msg = f'"Tests Data failed to download." Reason: {e}'
          pytest.skip(error_msg, allow_module_level=True)
          return
  
imports: import tempfile
  from urllib.error import URLError, HTTPError
  import pytest
  import nibabel
  import numpy
  from numpy.testing import assert_allclose, assert_array_equal, assert_
  import trx.trx_file_memmap
  from dipy.data import get_fnames
  from dipy.io.streamline import load_tractogram
  from dipy.io.utils import create_nifti_header, decfa, decfa_to_float, get_reference_info, is_reference_info_valid, read_img_arr_or_path
  from dipy.testing.decorators import set_random_number_generator
label_desc: Use image node_id 1 for calling a global function with example usage: setup_module() without return types