code: def mdata_xy(request, reference_data):
      y = reference_data["Y"][request.param]
      x = reference_data["X"][request.param]
      return x, y
  
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 5 for calling a global function with example usage: mdata_xy(request, reference_data) and returns: x,  y