code: def setUp(self):
      super().setUp()
      self.sequence = note_seq.NoteSequence()
      self.sequence.ticks_per_quarter = 220
      self.sequence.tempos.add().qpm = 120.0
  
file_path: magenta/magenta/models/music_vae/data_hierarchical_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import copy
  from magenta.models.music_vae import data_hierarchical
  import note_seq
  from note_seq import testing_lib
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the MultiInstrumentPerformanceConverterTest obj's underlying member method code with example usage: obj.setUp() without return types