class_docstr: Base class for translation problems.
class_docstr_tok: ["Base","class","for","translation","problems","."]
docstr: Files to be passed to compile_data.
docstr_tok: ["Files","to","be","passed","to","compile_data","."]
code: def source_data_files(self, dataset_split):
      """Files to be passed to compile_data."""
      raise NotImplementedError()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import gzip
  import os
  import tarfile
  import zipfile
  from tensor2tensor.data_generators import cleaner_en_xx
  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 bleu_hook
  from tensor2tensor.utils import contrib
  from tensor2tensor.utils import mlperf_log
  import tensorflow.compat.v1
label_desc: Use image node_id 4 for calling the TranslateProblem obj's underlying member method code with example usage: obj.source_data_files(dataset_split) without return types