swagger.restapi：

def restapi(url, **kwargs):    """REST API endpoint decorator."""    def _real_decorator(cls):        cls.rest_api = True        cls.tagged_api_comps = []        members = inspect.getmembers(cls, is_rest_api_method)        for name, member in members:            doc = inspect.getdoc(member)            if not doc:                continue            path_spec = docparser.parse_from_docstring(str(doc))            if path_spec:                setattr(member, 'path_spec', path_spec)                 cls.tagged_api_comps.append(name)        settings.add_api_handler(cls)        settings.add_route(url, cls, **kwargs)        return cls    return _real_decorator