@Override
    public void updateInstance(String serviceName, String groupName, Instance instance) throws NacosException {
    
    }
@Test
    void testUpdateInstance() {
        String serviceName = "service1";
        String groupName = "group1";
        Instance instance = new Instance();
        Assertions.assertDoesNotThrow(() -> {
            delegate.updateInstance(serviceName, groupName, instance);
        });
    }