    @Test
    public void testBoundariesAndMultiPolygons() {

        assertEquals(Optional.of(ZoneId.of("Europe/Amsterdam")), engine.query(51.4457, 4.9248));
        assertEquals(Optional.of(ZoneId.of("Europe/Brussels")), engine.query(51.4457, 4.9250));
        assertEquals(Optional.of(ZoneId.of("Europe/Brussels")), engine.query(51.4437,4.9186));
        assertEquals(Optional.of(ZoneId.of("Europe/Amsterdam")), engine.query(51.4438,4.9181));
    }