@Override
    public ServiceInfo subscribe(String serviceName, String groupName, String clusters) throws NacosException {
        throw new UnsupportedOperationException("Do not support subscribe service by UDP, please use gRPC replaced.");
    }
@Test
    void testSubscribe() throws Exception {
        assertThrows(UnsupportedOperationException.class, () -> {
            String groupName = "group1";
            String serviceName = "serviceName";
            String clusters = "clusters";
            
            //when
            clientProxy.subscribe(serviceName, groupName, clusters);
        });
    }