code: def testEmpty(self):
      model = join(testdata.models_dir, "crepe", "crepe-tiny-1.pb")
      self.assertComputeFails(PitchCREPE(graphFilename=model), [])
  
imports: from essentia_test import *
label_desc: Use image node_id 4 for calling the TestPitchCREPE obj's underlying member method code with example usage: obj.testEmpty() without return types