code: def _check_init(self):
      if self.experiment is None:
          raise ValueError("experiment config is not setup yet!")
  
imports: import logging
  import os
  import traceback
  from abc import ABCMeta, abstractmethod
  from pathlib import Path
  from typing import Any, Callable, Dict, List, Mapping, Type, Union
  import toml
  import yaml
label_desc: Use image node_id 3 for calling the ExperimentConfig obj's underlying member method code with example usage: obj._check_init() without return types