class_docstr: 1 Billion Word Language Model Benchmark dataset.
code: def _split_generators(self, dl_manager):
      lm1b_path = dl_manager.download_and_extract(_DOWNLOAD_URL)
  
      train_files = _train_data_filenames(lm1b_path)
      test_files = _test_data_filenames(lm1b_path)
      return [
          tfds.core.SplitGenerator(
              name=tfds.Split.TRAIN, gen_kwargs={"files": train_files}
          ),
          tfds.core.SplitGenerator(
              name=tfds.Split.TEST, gen_kwargs={"files": test_files}
          ),
      ]
  
file_path: datasets/tensorflow_datasets/datasets/lm1b/lm1b_dataset_builder.py
imports: import os
  from absl import logging
  from etils import epath
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
  import tensorflow_datasets.public_api
label_desc: Use image node_id 2 for calling the Builder obj's underlying member method code with example usage: obj._split_generators(dl_manager) and returns: list