code: def test_values(self):
      from tests.test_evaluation_notes import ANNOTATIONS
  
      header = "MIDI notes for the stereo_sample.[flac|wav] file"
      write_notes(
          ANNOTATIONS,
          pj(ANNOTATIONS_PATH, "stereo_sample.notes"),
          header=header,
      )
  
imports: from __future__ import absolute_import, division, print_function
  import unittest
  from os.path import join, join
  from madmom.io import *
  from madmom.io import load_beats, load_key, load_notes, load_onsets, load_tempo
  from tests import ANNOTATIONS_PATH, DETECTIONS_PATH
  from .None import DATA_PATH
label_desc: Use image node_id 1 for calling the TestWriteNotesFunction obj's underlying member method code with example usage: obj.test_values() without return types