text: # Copyright 2021 The TensorFlow Ranking Authors.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """TensorFlow Ranking library."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  from tensorflow_ranking.python import data
  from tensorflow_ranking.python import estimator
  from tensorflow_ranking.python import feature
  from tensorflow_ranking.python import head
  from tensorflow_ranking.python import keras
  from tensorflow_ranking.python import losses
  from tensorflow_ranking.python import metrics
  from tensorflow_ranking.python import model
  from tensorflow_ranking.python import utils
  
  from tensorflow.python.util.all_util import remove_undocumented  # pylint: disable=g-bad-import-order
  
  # losses_impl and metrics_impl are added here, so that we can still depend on
  # them for tfr.keras.losses and metrics APIs. Note that these two are not
  # exposed via tfr.losses_impl, as there is no such import above.
  _allowed_symbols = [
      'data',
      'feature',
      'estimator',
      'head',
      'keras',
      'losses',
      'metrics',
      'model',
      'utils',
      'losses_impl',
      'metrics_impl'
  ]
  
  remove_undocumented(__name__, _allowed_symbols)
  