@Override
    public List<Instance> getAllInstances(String serviceName) throws NacosException {
        return getAllInstances(serviceName, new ArrayList<>());
    }
@Test
    void testGetAllInstances3() throws NacosException {
        //given
        String serviceName = "service1";
        //when
        client.getAllInstances(serviceName, false);
        //then
        verify(proxy, times(1)).queryInstancesOfService(serviceName, Constants.DEFAULT_GROUP, "", false);
    }