code: def bdf_curry_ref():
      """Return a view of the reference bdf used to create the curry files."""
      raw = read_raw_bdf(bdf_file, preload=True).drop_channels(
          ["Status"]
      )
      return raw
  
imports: from datetime import datetime, timezone
  from pathlib import Path
  from shutil import copyfile
  import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_array_equal
  from mne._fiff.constants import FIFF
  from mne._fiff.tag import _loc_to_coil_trans
  from mne.annotations import events_from_annotations, read_annotations
  from mne.bem import _fit_sphere
  from mne.datasets import testing
  from mne.event import find_events
  from mne.io.bti import read_raw_bti
  from mne.io.curry import read_raw_curry
  from mne.io.curry.curry import FILE_EXTENSIONS, _get_curry_file_structure, _get_curry_version, _read_events_curry
  from mne.io.edf import read_raw_bdf
  from mne.io.tests.test_raw import _test_raw_reader
  from mne.utils import catch_logging
label_desc: Use image node_id 1 for calling a global function with example usage: bdf_curry_ref() and returns: raw