public static VectorGeometryMerger newMerger(GeometryType geometryType) {
    return new VectorGeometryMerger(geometryType);
  }
Returns a new {@link VectorGeometryMerger} that combines encoded geometries of the same type into a merged
multipoint, multilinestring, or multipolygon.
planetiler-core/src/main/java/com/onthegomap/planetiler/VectorTile.java