@Override
    public Double dist(V firstMember, V secondMember, GeoUnit geoUnit) {
        return get(distAsync(firstMember, secondMember, geoUnit));
    }
@Test
    public void testDist() {
        RGeo<String> geo = redisson.getGeo("test");
        geo.add(new GeoEntry(13.361389, 38.115556, "Palermo"), new GeoEntry(15.087269, 37.502669, "Catania"));
        
        assertThat(geo.dist("Palermo", "Catania", GeoUnit.METERS)).isEqualTo(166274.1516D);
    }