code: def load_class_hierarchy(filepath):
      with tf.io.gfile.GFile(filepath, "r") as jsonfile:
          return json.load(jsonfile)
  
imports: import collections
  import csv
  import io
  import json
  import os
  from absl import logging
  import numpy
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
  import tensorflow_datasets.public_api
label_desc: Use image node_id 3 for calling a global function with example usage: load_class_hierarchy(filepath) and returns: json