router.routes.append(Route(url='^{prefix}/arguments/(?P<thing>[^/]+)$',
    name='{basename}-arguments', mapping={'get': 'arguments'}, initkwargs={}))
router.register('extraroute', ExtraRouteViewset, base_name='extraroute')
urlpatterns = router.urls
реверс на @list_route с настраиваемым url_path