code: def __init__(self, return_values):
      self.args = []
      self.iterator = iter(return_values)
  
imports: import unittest
  import numpy
  import chainer
  from chainer import backend
  from chainer.backends import _cpu
  from chainer import dataset
  from chainer import iterators
  from chainer import testing
  from chainer.training import extensions
label_desc: Use image node_id 1 to create a new DummyConverter object from inherited base classes: object with example: obj = DummyConverter(return_values)