def METHOD_NAME(cls):
    cls.classes = {'rb': BareFileReader,
                   'wb': BareFileWriter,
                   'rs': BareStreamReader,
                   'ws': BareStreamWriter}
    cls.header_class = BareHeader
    cls.file_opener = FileOpener('Bare', classes=cls.classes,
                                 header_class=cls.header_class)
    cls.open = staticmethod(FileOpener.create(globals(), doc='extra'))