code: def _runInstance(self, input, method="degara"):
      return RhythmExtractor2013(method=method)(input)
  
imports: from essentia_test import *
  from essentia.standard import MonoLoader, RhythmExtractor2013
  from math import fabs
  from math import floor
label_desc: Use image node_id 3 for calling the TestRhythmExtractor2013 obj's underlying member method code with example usage: obj._runInstance(input, method) and returns: RhythmExtractor2013