class_docstr: The conf field.
class_docstr_tok: ["The","conf","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 json
  from typing import NamedTuple
  from marshmallow import fields, post_dump, pre_load, validate
  from marshmallow.schema import Schema
  from marshmallow.validate import Range
  from marshmallow_sqlalchemy import SQLAlchemySchema, auto_field
  from pendulum.parsing import ParserError
  from airflow.api_connexion.exceptions import BadRequest
  from airflow.api_connexion.parameters import validate_istimezone
  from airflow.api_connexion.schemas.enum_schemas import DagStateField
  from airflow.models.dagrun import DagRun
  from airflow.utils import timezone
  from airflow.utils.state import DagRunState
  from airflow.utils.types import DagRunType
label_desc: Use image node_id 1 for calling the ConfObject obj's underlying member method code with example usage: obj._serialize(value, attr, obj) and returns: unknown, dict