code: def pad_dataset_with_zeroed_out_examples(ds):
      def _zero_out(x):
          return {k: tf.zeros_like(v) for k, v in x.items()}
  
      return ds.concatenate(ds.map(_zero_out).repeat())
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import collections
  import os
  import gin
  import tensorflow.compat.v1
  import tensorflow_datasets
label_desc: Use image node_id 18 for calling a global function with example usage: pad_dataset_with_zeroed_out_examples(ds) and returns: ds, unknown