code: def next(self):
      if self._batches < self.batches:
          self._batches += 1
          return self.batch
      else:
          self._batches = 0
          raise StopIteration
  
imports: import os
  import random
  import tarfile
  import logging
  import tarfile
  import mxnet
  from mxnet.test_utils import get_cifar10
  from mxnet.gluon.data.vision import ImageFolderDataset
  from mxnet.gluon.data import DataLoader
  from mxnet.contrib.io import DataLoaderIter
label_desc: Use image node_id 2 for calling the DummyIter obj's underlying member method code with example usage: obj.next() and returns: self