@Override
    public <T> boolean isLiveObject(T instance) {
        return instance instanceof RLiveObject;
    }
@Test
    public void testIsLiveObject() {
        RLiveObjectService service = redisson.getLiveObjectService();
        TestClass ts = new TestClass(new ObjectId(100));
        assertFalse(service.isLiveObject(ts));
        TestClass persisted = service.persist(ts);
        assertFalse(service.isLiveObject(ts));
        assertTrue(service.isLiveObject(persisted));
    }