code: def __init__(self):
      pipeline.Pipeline.__init__(
          self, {"0": Type4, "1": Type3, "2": Type4}, Type5
      )
  
imports: import collections
  from absl.testing import absltest
  from magenta.pipelines import dag_pipeline
  from magenta.pipelines import pipeline
  from magenta.pipelines import statistics
label_desc: Use image node_id 1 to create a new UnitD object from inherited base classes: pipeline with example: obj = UnitD()