code: def add_cmdline_args(
      cls, parser: ParlaiParser, partial_opt: Optional[Opt] = None
  ) -> ParlaiParser:
      super().add_cmdline_args(parser, partial_opt)
      parser = parser.add_argument_group("LIGHT Interactive World")
      parser.add_argument(
          "--add-task-string",
          type="bool",
          default=False,
          help="Add _task_speech to text input to model or not",
      )
      return parser
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.worlds import create_task
  from parlai.tasks.self_chat.worlds import SelfChatWorld
  from parlai.tasks.interactive.worlds import InteractiveWorld
  from parlai.agents.repeat_label.repeat_label import RepeatLabelAgent
  import random
  import pickle
  import os
label_desc: Use image node_id 1 for calling the InteractiveSimpleWorld obj's underlying member method code with example usage: obj.add_cmdline_args(cls, parser, partial_opt) and returns: parser