@Override
    public void updateInstance(String serviceName, Instance instance) throws NacosException {
        updateInstance(serviceName, Constants.DEFAULT_GROUP, instance);
    }
@Test
    void testUpdateInstance1() throws NacosException {
        //given
        String serviceName = "service1";
        String groupName = "group1";
        Instance instance = new Instance();
        //when
        nacosNamingMaintainService.updateInstance(serviceName, groupName, instance);
        //then
        verify(serverProxy, times(1)).updateInstance(serviceName, groupName, instance);
    }