class_docstr: Test model.
code: def _build_graph_for_generation(self):
      pass
  
file_path: magenta/magenta/models/shared/sequence_generator_test.py
imports: from magenta.models.shared import model
  from magenta.models.shared import sequence_generator
  from note_seq.protobuf import generator_pb2
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the Model obj's underlying member method code with example usage: obj._build_graph_for_generation() without return types