code: def prepare(self, data, batches, device):
      iterator = DummyIterator(data)
      converter = DummyConverter(batches)
      target = DummyModelTwoArgs(self)
      evaluator = extensions.Evaluator(
          iterator, target, converter=converter, device=device
      )
      return iterator, converter, target, evaluator
  
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 2 for calling the TestEvaluatorTupleData obj's underlying member method code with example usage: obj.prepare(data, batches, device) and returns: iterator,  converter,  target,  evaluator