code: def fftwdata_size(request, reference_data):
      return reference_data["FFTWDATA_SIZES"][request.param]
  
imports: from os.path import join, dirname
  from typing import Callable, Union
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_equal, assert_allclose
  import pytest
  from pytest import raises
  from scipy.fft._pocketfft.realtransforms import dct, idct, dst, idst, dctn, idctn, dstn, idstn
label_desc: Use image node_id 3 for calling a global function with example usage: fftwdata_size(request, reference_data) and returns: reference_data