class_docstr: Hugging Face DialoGPT Model.
class_docstr_tok: ["Hugging","Face","DialoGPT","Model","."]
code: def _get_special_tokens(self, opt, dict):
      # keep it consistent between DialoGPTModel and DialoGPTDecoder on start_idx, end_idx, null_idx
      return DialoGPTDecoder._get_special_tokens(opt, dict)
  
file_path: ParlAI/parlai/agents/hugging_face/dialogpt.py
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.agents.hugging_face.dict import DialoGPTDictionaryAgent
  from parlai.agents.hugging_face.gpt2 import Gpt2Agent, GPT2Decoder, HFGPT2Model
  from parlai.utils.misc import warn_once
label_desc: Use image node_id 1 for calling the DialoGPTModel obj's underlying member method code with example usage: obj._get_special_tokens(opt, dict) and returns: DialoGPTDecoder