zone.add(new Dot(2, 2, 2, 2, 2));
zone.add(new Dot(4, 4, 4, 4, 3));
zone.add(new Dot(5, 5, 5, 5, 4));
zone.add(new Dot(6, 6, 6, 6, 5));
zone.add(new User("testuser"));
zone.fixAllZIndicesForAllOtherShapesAbove(3, new Dot(3, 3, 3, 3, 3));
for (RPObject object : zone) {
assertEquals(object.get("x"), object.get("z"));