code: def id2word(self, wid):
      return self.id2word[wid]
  
imports: import argparse
  from collections import Counter
  from itertools import chain
  import torch
  from util import read_corpus
label_desc: Use image node_id 7 for calling the VocabEntry obj's underlying member method code with example usage: obj.id2word(wid) and returns: self