code: def __getstate__(self):
      state = self.__dict__.copy()
      return state
  
imports: from tqdm import tqdm
  from typing import Tuple
  from random import shuffle
  import pickle
  import random
  import numpy
  from pathlib import Path
  from pytorch_pretrained_bert.tokenization import BertTokenizer
label_desc: Use image node_id 3 for calling the PretrainingDataCreator obj's underlying member method code with example usage: obj.__getstate__() and returns: state