class_docstr: Lambada as language modeling task.
class_docstr_tok: ["Lambada","as","language","modeling","task","."]
code: def vocab_size(self):
      # Similar to the setup of the main paper
      return 60000
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import csv
  import os
  import tarfile
  from tensor2tensor.data_generators import generator_utils
  from tensor2tensor.data_generators import problem
  from tensor2tensor.data_generators import text_encoder
  from tensor2tensor.data_generators import text_problems
  from tensor2tensor.layers import modalities
  from tensor2tensor.utils import registry
  import tensorflow.compat.v1
label_desc: Use image node_id 4 for calling the LambadaLm obj's underlying member method code with example usage: obj.vocab_size() and returns: int