code: def _get_iterator(self, return_type="auto"):
      if return_type in ("np", "auto"):
          # enable prefetching when using numpy_iterator
          return self._prefetch_numpy_iterator(
              super()._get_iterator("np")
          )
      return super()._get_iterator(return_type)
  
imports: import collections
  import itertools
  from functools import partial
  import jax
  import numpy
  import tree
  from keras import backend
  from keras import callbacks
  from keras import ops
  from keras import optimizers
  from keras.backend import distribution_lib
  from keras.distribution import distribution_lib
  from keras.trainers import trainer
  from keras.trainers.data_adapters import data_adapter_utils
  from keras.trainers.epoch_iterator import EpochIterator
  from keras.utils import traceback_utils
label_desc: Use image node_id 1 for calling the JAXEpochIterator obj's underlying member method code with example usage: obj._get_iterator(return_type) and returns: super, self