@Override
    public Map<V, GeoPosition> pos(V... members) {
        return get(posAsync(members));
    }
@Test
    public void testPosEmpty() {
        RGeo<String> geo = redisson.getGeo("test");
        
        assertThat(geo.pos("test2", "Palermo", "test3", "Catania", "test1")).isEmpty();
    }