code: def _fnirs_check_bads(info):
      _validate_nirs_info(info)
  
imports: import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_array_almost_equal, assert_array_equal
  from mne import create_info
  from mne._fiff.constants import FIFF
  from mne._fiff.pick import _picks_to_idx
  from mne.datasets import testing
  from mne.datasets.testing import data_path
  from mne.io import RawArray, read_raw_nirx
  from mne.preprocessing.nirs import _channel_chromophore, _channel_frequencies, _check_channels_ordered, _fnirs_optode_names, _fnirs_spread_bads, _optode_position, _validate_nirs_info, beer_lambert_law, optical_density, scalp_coupling_index, tddr
label_desc: Use image node_id 2 for calling a global function with example usage: _fnirs_check_bads(info) without return types