@Override
    public boolean addIfExists(double score, V object) {
        return get(addIfExistsAsync(score, object));
    }
@Test
    public void testAddIfExists() {
        RScoredSortedSet<String> set = redisson.getScoredSortedSet("simple");

        assertThat(set.addIfExists(123.81, "1980")).isFalse();
        assertThat(set.getScore("1980")).isNull();
        set.add(111, "1980");
        assertThat(set.addIfExists(32, "1980")).isTrue();
        assertThat(set.getScore("1980")).isEqualTo(32);
    }