public set DeepCopy(set FirstSet, set SecondSet, int choice) {
        if (choice == 1) {
            for (int i = 0; i < FirstSet.stuff.size(); i++) {
                int item = FirstSet.stuff.get(i);
                SecondSet.stuff.add(item);
            }
            return SecondSet;
        } else if (choice == 2) {
            for (int i = 0; i < SecondSet.stuff.size(); i++) {
                int item = SecondSet.stuff.get(i);
                FirstSet.stuff.add(item);
            }
            return FirstSet;
        }
        //Can I geet rid of this one?
        return FirstSet;
    }