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 __init__(self, *args, **kwargs):
        BaseConverter.__init__(self, *args, **kwargs)
        self.type_ = "string"
        self.regex = '[^(/;)]+'