class_docstr: Abstract base class representing a dataset.
code: def to_tensorflow(self):
      raise NotImplementedError()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import array
  import functools
  import gzip
  import operator
  import os
  import struct
  import tempfile
  import sys
  import warnings
  import numpy
  import tensorflow
  from cleverhans import utils
label_desc: Use image node_id 4 for calling the Dataset obj's underlying member method code with example usage: obj.to_tensorflow() without return types