private int getLastRollMaxResult() {
        Iterator<Roll> it = historical.iterator();
        int total = 0;
        Collection results = it.next().getRollResult();
        while (it.hasNext()) {
            results = it.next().getRollResult();
        }
        Iterator<Integer> it2 = results.iterator();
        while (it2.hasNext()) {
            total = Math.max(it2.next(), total);
        }
        return total;
    }