@Override
    public boolean tryAdd(double longitude, double latitude, V member) {
        return get(tryAddAsync(longitude, latitude, member));
    }
@Test
    public void testTryAdd() {
        RGeo<String> geo = redisson.getGeo("test");
        assertThat(geo.add(2.51, 3.12, "city1")).isEqualTo(1);
        assertThat(geo.tryAdd(2.5, 3.1, "city1")).isFalse();
        assertThat(geo.tryAdd(2.12, 3.5, "city2")).isTrue();
    }