class_docstr: Same as ReverseSequence but with smaller sequences.
    
class_docstr_tok: ["Same","as","ReverseSequence","but","with","smaller","sequences","."]
code: def min_sequence_length(self, dataset_split):
      return {
          problem.DatasetSplit.TRAIN: 4,
          problem.DatasetSplit.EVAL: 17,
          problem.DatasetSplit.TEST: 17,
      }[dataset_split]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import random
  from six.moves import range
  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 2 for calling the ReverseSequenceSmall obj's underlying member method code with example usage: obj.min_sequence_length(dataset_split) and returns: dict