text: # Copyright 2021 Zilliz. 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.
  
  
  def arg_type_check():
      # TODO(fzliu): should we use this or a library such as `mypy`?
      raise NotImplementedError
  
  
  def pipeline_compiler(target='local'):
      """
      The Pipeline compiler factory
      """
      raise NotImplementedError
  
  
  def at_compile_phase() -> bool:
      """
      Test whether we are at compile phase
      """
      raise NotImplementedError
  