code: def _adversarial_dialogue_datapath(opt: Opt) -> str:
      """
      Return the filepath for the specified datatype of the specified adversarial dialogue
      task.
      """
      build_dialogue_datasets(opt)
      # Build the data if it doesn't exist.
      dt = opt["datatype"].split(":")[0]
      data_path = os.path.join(
          get_adversarial_dialogue_folder(opt["datapath"]),
          "bot_adversarial_dialogue_datasets_with_persona",
          dt + ".txt",
      )
      return data_path
  
imports: from typing import Optional, List
  from parlai.core.params import ParlaiParser
  import os
  from parlai.core.opt import Opt
  from parlai.core.teachers import ParlAIDialogTeacher
  from parlai.core.mutators import register_mutator, ManyEpisodeMutator
  from parlai.tasks.bot_adversarial_dialogue.build import build_dialogue_datasets, build_human_safety_eval_dataset, build_human_nonadv_safety_eval_dataset, get_adversarial_dialogue_folder, get_human_safety_eval_folder, get_human_nonadv_safety_eval_folder
  import parlai.utils.logging
  from parlai.utils.io import PathManager
  from parlai.utils.misc import str_to_msg
  from parlai.tasks.dialogue_safety.agents import OK_CLASS, NOT_OK_CLASS
  from parlai.core.message import Message
  from parlai.utils.misc import warn_once
label_desc: Use image node_id 1 for calling a global function with example usage: _adversarial_dialogue_datapath(opt) and returns: data_path