@Override
    public Geometry worldGeometry() throws GeometryException {
      return worldGeom != null ? worldGeom : (worldGeom = computeWorldGeometry());
    }
A source feature generated from OSM elements. Inferring the geometry can be expensive, so each subclass is
constructed with the inputs necessary to create the geometry, but the geometry is constructed lazily on read.
planetiler-core/src/main/java/com/onthegomap/planetiler/reader/osm/OsmReader.java