@Override
    public boolean add(V e) {
        return get(addAsync(e));
    }
@Test
    public void testClusteredIterator() {
        testInCluster(redisson -> {
            int size = 10000;
            RSet<String> set = redisson.getSet("{test");
            for (int i = 0; i < size; i++) {
                set.add("" + i);
            }

            Set<String> keys = new HashSet<>();
            for (String key : set) {
                keys.add(key);
            }

            assertThat(keys).hasSize(size);
        });
    }