class_docstr: Stand-in for HuggingFace if we do not have access to tokenizers.
  
  Only EVER used for a model used in interactive mode that was previously trained with
  HF BPE.
class_docstr_tok: ["Stand-in","for","HuggingFace","if","we","do","not","have","access","to","tokenizers",".","Only","EVER","used","for","a","model","used","in","interactive","mode","that","was","previously","trained","with","HF","BPE","."]
docstr: Basically a combination of syncing HF dict with the GPT2 standard.
  
  It's kinda reversed.
  
  :param dict_agent:
      Dictionary Agent
docstr_tok: ["Basically","a","combination","of","syncing","HF","dict","with","the","GPT2","standard",".","It","'s","kinda","reversed",".",":","param","dict_agent",":","Dictionary","Agent"]
code: def sync_with_dict(self, dict_agent):
      """
      Basically a combination of syncing HF dict with the GPT2 standard.
  
      It's kinda reversed.
  
      :param dict_agent:
          Dictionary Agent
      """
      special_tokens = [
          dict_agent.null_token,
          dict_agent.start_token,
          dict_agent.end_token,
          dict_agent.unk_token,
      ]
      dict_agent.tok2ind = {
          tok: i
          for tok, i in zip(special_tokens, range(len(special_tokens)))
      }
      dict_agent.ind2tok = {v: k for k, v in dict_agent.tok2ind.items()}
      for each_token in self.encoder.values():
          dict_agent.add_token(each_token)
          dict_agent.freq[each_token] = 1
  
imports: from parlai.core.params import ParlaiParser
  from abc import ABC, abstractmethod
  from functools import lru_cache
  import json
  import os
  import random
  import re
  from typing import Dict, List, Optional, Set, Tuple
  from typing_extensions import final
  from parlai.core.build_data import download, make_dir
  from parlai.core.opt import Opt
  from parlai.utils.misc import warn_once
  from parlai.utils.typing import TShared
  from parlai.utils.io import PathManager
  import parlai.utils.logging
label_desc: Use image node_id 2 for calling the SlowBytelevelBPE obj's underlying member method code with example usage: obj.sync_with_dict(dict_agent) without return types