class_docstr: JSON object field.
code: def _serialize(self, value, attr, obj, **kwargs):
      if not value:
          return {}
      return json.loads(value) if isinstance(value, str) else value
  
imports: from __future__ import annotations
  import datetime
  import inspect
  import json
  import typing
  import marshmallow
  from dateutil import relativedelta
  from marshmallow import Schema, fields, validate
  from marshmallow_oneofschema import OneOfSchema
  from airflow.models.mappedoperator import MappedOperator
  from airflow.serialization.serialized_objects import SerializedBaseOperator
  from airflow.utils.weight_rule import WeightRule
label_desc: Use image node_id 1 for calling the JsonObjectField obj's underlying member method code with example usage: obj._serialize(value, attr, obj) and returns: unknown, dict