class_docstr: Abstract class for data iterators.
  
  For serialization, any data iterator should inherit from this class
code: def __init__(self, name=None):
      super(NervanaDataIterator, self).__init__(name)
  
file_path: neon/neon/data/dataiterator.py
imports: from builtins import zip
  import numpy
  from neon import NervanaObject
label_desc: Use image node_id 1 to create a new NervanaDataIterator object from inherited base classes: NervanaObject with example: obj = NervanaDataIterator(name)