class_docstr: model configuration
code: def to_json_string(self) -> str:
      config_dict = self.to_dict()
      return json.dumps(config_dict, indent=2, sort_keys=True) + "\n"
  
file_path: DeepKE/example/llm/CPM-Bee/src/cpm_live/utils/config.py
imports: import json
  import os
  import copy
  from typing import Any, Dict, Union
  from .log import logger
label_desc: Use image node_id 5 for calling the Config obj's underlying member method code with example usage: obj.to_json_string() and returns: unknown