if ((ret = (Tile)itr.next()) != null) { break; }
ret = (Tile)itr.next(); break;
    public Tile getFirstTile() {        Tile ret = null;        Iterator itr = tiles.iterator();        while (itr.hasNext()) {            if ((ret = (Tile)itr.next()) != null) {                break;            }        }        return ret;    }