code: def mdata_xy(request):
      ref = get_reference_data()
      y = ref["Y"][request.param]
      x = ref["X"][request.param]
      return x, y
  
imports: from os.path import join, dirname
  from typing import Callable, Dict, Tuple, Union, Type
  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) and returns: x,  y