text: # copyright (c) 2020  paddlepaddle authors. all rights reserved.
  #
  # 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.
  
  PLACEHOLDER
  