code: def object_hook(self, obj):
      self.recursive_iter(obj)
      return obj
  
file_path: catalyst/catalyst/exchange/utils/serialization_utils.py
imports: import json
  import re
  from json import JSONEncoder
  import pandas
  from catalyst.constants import DATE_TIME_FORMAT
  from six import string_types
label_desc: Use image node_id 3 for calling the ExchangeJSONDecoder obj's underlying member method code with example usage: obj.object_hook(obj) and returns: obj