class_docstr: Utility class for 1B word benchmark dataset.
  
  The current implementation reads the data from the tokenized text
  files.
class_docstr_tok: ["Utility","class","for","1B","word","benchmark","dataset",".","The","current","implementation","reads","the","data","from","the","tokenized","text","files","."]
code: def vocab(self):
      return self._vocab
  
imports: import random
  import numpy
  from textattack.shared.utils import LazyLoader
label_desc: Use image node_id 6 for calling the LM1BDataset obj's underlying member method code with example usage: obj.vocab() and returns: self