def groups_option(f):
    new_func = click.option("-g", "--groups",
                            help="Comma-separated list of requirement groups "
                            "to include.")(f)
    return update_wrapper(new_func, f)
def write(self) -> None:  # type: ignore[override]
        rval: None = super(SubmoduleConfigParser, self).write()
        self.flush_to_index()
        return rval