code: def __iter__(self):
      for choice in self.choices:
          yield choice
  
file_path: lm-evaluation-harness/scripts/main_eval.py
imports: import os
  import argparse
  import json
  import logging
  import fnmatch
  from lm_eval import tasks, evaluator
label_desc: Use image node_id 3 for calling the MultiChoice obj's underlying member method code with example usage: obj.__iter__() without return types