class_docstr: Fashion MNIST.
code: def train_shards(self):
      return 10
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import gzip
  import os
  import random
  import numpy
  from tensor2tensor.data_generators import generator_utils
  from tensor2tensor.data_generators import image_utils
  from tensor2tensor.utils import registry
  import tensorflow.compat.v1
label_desc: Use image node_id 5 for calling the ImageFashionMnist obj's underlying member method code with example usage: obj.train_shards() and returns: int