old_contents: #
  # Copyright (C) 2021 Satoru SATOH <satoru.satoh@gmail.com>
  # SPDX-License-Identifier: MIT
  #
  """Some common constants, utility functions and so on.
  """
  import typing
  
  
  DataT = typing.Dict[str, typing.Any]
  ResultT = typing.Tuple[bool, typing.Union[str, typing.List[str]]]
  
  MaybeDataT = typing.Union[DataT, bool, int, float, str, None]
  
  # vim:sw=4:ts=4:et:
  
new_contents: #
  # Copyright (C) 2021 Satoru SATOH <satoru.satoh@gmail.com>
  # SPDX-License-Identifier: MIT
  #
  """Some common constants, utility functions and so on.
  """
  import typing
  
  
  DataT = typing.Mapping[str, typing.Any]
  ResultT = typing.Tuple[bool, typing.Union[str, typing.List[str]]]
  
  MaybeDataT = typing.Union[DataT, bool, int, float, str, None]
  
  # vim:sw=4:ts=4:et:
  
subject: allow broader type as DataT