}
/** expand this forest into a set of trees */
public HashSet<Tree<T>> expand(boolean toss) {
final HashSetTreeConsumer<T> ret = new HashSetTreeConsumer<T>();
visit(new TreeMaker2<T>(toss, ret), null, null);
}
/** expand this forest into a set of trees */
public HashSet<Tree<T>> expand(boolean toss) {
final HashSetTreeConsumer<T> ret = new HashSetTreeConsumer<T>();
visit(new TreeMaker2<T>(toss, ret), null, null);