public List<T> getContaining(Point point) {
    build();
    // first pre-filter polygons with envelope that overlaps this point
    List<?> items = index.query(point.getEnvelopeInternal());
    // then post-filter to only polygons that actually contain the point
    return postFilterContaining(point, items);
  }
Returns the data associated with all polygons containing {@code point}.
planetiler-core/src/main/java/com/onthegomap/planetiler/geo/PolygonIndex.java