@Override
    public Collection<V> valueRange(int startIndex, int endIndex) {
        return get(valueRangeAsync(startIndex, endIndex));
    }
@Test
    public void testValueRange() {
        RScoredSortedSet<Integer> set = redisson.getScoredSortedSet("simple");
        set.add(0, 1);
        set.add(1, 2);
        set.add(2, 3);
        set.add(3, 4);
        set.add(4, 5);
        set.add(4, 5);

        Collection<Integer> vals = set.valueRange(0, -1);
        assertThat(vals).containsExactly(1, 2, 3, 4, 5);
    }