class_docstr: A language model on English Wikipedia.
  
  References removed.  Chopped into segments of 16k tokens.
class_docstr_tok: ["A","language","model","on","English","Wikipedia",".","References","removed",".","Chopped","into","segments","of","16k","tokens","."]
docstr: Length of each example (in tokens).
docstr_tok: ["Length","of","each","example","(","in","tokens",")","."]
code: def sequence_length(self):
      """Length of each example (in tokens)."""
      return 2**14
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import subprocess
  import numpy
  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.utils import registry
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the LanguagemodelWikiNorefV8kL16k obj's underlying member method code with example usage: obj.sequence_length() and returns: unknown