static Geometry reassemblePoints(List<List<CoordinateSequence>> result) {
    List<Point> points = new ArrayList<>();
    for (List<CoordinateSequence> inner : result) {
      for (CoordinateSequence coordinateSequence : inner) {
        if (coordinateSequence.size() == 1) {
          points.add(GeoUtils.JTS_FACTORY.createPoint(coordinateSequence));
        }
      }
    }
    return GeoUtils.combinePoints(points);
  }
Returns a {@link Polygon} built from all outer/inner rings in {@code group}, reversing all inner rings.
planetiler-core/src/main/java/com/onthegomap/planetiler/render/GeometryCoordinateSequences.java