code: def test_nirx_aurora_2021_9_6():
      """Test reading NIRX files."""
      raw = read_raw_nirx(nirsport2_2021_9_6, preload=True)
      assert len(raw.annotations) == 3
      assert raw.annotations.description[0] == "1.0"
      assert raw.annotations.description[2] == "3.0"
  
imports: import datetime
  import os
  import shutil
  import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_array_equal
  from mne import pick_types
  from mne._fiff.constants import FIFF
  from mne.datasets.testing import data_path, requires_testing_data
  from mne.io import read_raw_nirx
  from mne.io.tests.test_raw import _test_raw_reader
  from mne.preprocessing import annotate_nan
  from mne.preprocessing.nirs import _reorder_nirx, short_channels, source_detector_distances
  from mne.transforms import _get_trans, apply_trans
label_desc: Use image node_id 14 for calling a global function with example usage: test_nirx_aurora_2021_9_6() without return types