@Override
    public boolean removeAll(Collection<?> c) {
        return get(removeAllAsync(c));
    }
@Test
    public void testRemoveAll() {
        RSetCache<Integer> set = redisson.getSetCache("set");
        set.add(1);
        set.add(2, 10, TimeUnit.SECONDS);
        set.add(3);
        
        assertThat(set.removeAll(Arrays.asList(1, 3))).isTrue();
        assertThat(set.removeAll(Arrays.asList(1, 3))).isFalse();
        assertThat(set).containsOnly(2);
        set.destroy();
    }