def authenticate(json_path=None):
msg = ('<STR_LIT>'<EOL>'<STR_LIT>')<EOL>warnings.warn(msg, DeprecationWarning)<EOL>parser = get_parser('<STR_LIT>', credentials_path=json_path)<EOL>return parser<EOL>
Gets a Natural Language API parser by authenticating the API.

    **This method is deprecated.** Please use :obj:`budou.get_parser` to obtain a
    parser instead.

    Args:
      json_path (:obj:`str`, optional): The file path to the service account's
          credentials.

    Returns:
      Parser. (:obj:`budou.parser.NLAPIParser`)