@Override
    public void unsubscribe(String serviceName, String groupName, String clusters) throws NacosException {
    }
@Test
    void testUnsubscribe() throws Exception {
        String groupName = "group1";
        String serviceName = "serviceName";
        String clusters = "clusters";
        
        //when
        clientProxy.unsubscribe(serviceName, groupName, clusters);
        // do nothing
    }