@Override
    public <K> Iterable<K> findIds(Class<?> entityClass) {
        return findIds(entityClass, 10);
    }
@Test
    public void testFindIds() {
        RLiveObjectService s = redisson.getLiveObjectService();
        TestIndexed1 t1 = new TestIndexed1();
        t1.setId("1");
        t1.setKeywords(Collections.singletonList("132323"));
        TestIndexed1 t2 = new TestIndexed1();
        t2.setId("2");
        t2.setKeywords(Collections.singletonList("fjdklj"));
        s.persist(t1, t2);

        Iterable<String> ids = s.findIds(TestIndexed1.class);
        assertThat(ids).containsExactlyInAnyOrder("1", "2");
    }