public ListIterator childrenUnfolded() {
return children != null ? children.listIterator() : Collections.EMPTY_LIST.listIterator();
}
public ListIterator childrenFolded() {
if (isFolded()) {
return Collections.EMPTY_LIST.listIterator();
}
return childrenUnfolded();
}
/**
* return a list iterator over the list
*
* @param index
* @return an instance of ListIterator
*/
public ListIterator listIterator(int index) {
if (this.collection != null) return ((List) this.collection).listIterator(index);
return Collections.EMPTY_LIST.listIterator(index);
}
