code: def testResetStandard(self):
      audiofile = join(testdata.audio_dir, "recorded", "musicbox.wav")
      loader = MonoLoader(filename=audiofile)
      audio1 = loader()
      audio2 = loader()
      loader.reset()
      audio3 = loader()
      self.assertAlmostEqualVector(audio3, audio1)
      self.assertEqualVector(audio2, audio1)
  
imports: from essentia_test import *
  from numpy import fabs
label_desc: Use image node_id 20 for calling the TestMonoLoader obj's underlying member method code with example usage: obj.testResetStandard() without return types