bb.addPoint(12, 12, hole);
bb.addPoint(15, 12, hole);
bb.addPoint(15, 15, hole);
bb.addPoint(12, 12, hole);
PrimitiveShape hole2 = polygon.newHole();
bb.addPoint(15, 12, hole2);
bb.addPoint(19, 19, hole2);
bb.addPoint(15, 19, hole2);
bb.addPoint(15, 12, hole2);