public List<T> getIntersecting(Geometry geom) {
    build();
    List<?> items = index.query(geom.getEnvelopeInternal());
    return postFilterIntersecting(geom, items);
  }
Returns the data associated with all polygons intersecting {@code geom}.
planetiler-core/src/main/java/com/onthegomap/planetiler/geo/PolygonIndex.java