Bug 115099 Adapt Package explore tor new working set API isSelfUpdating
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/workingsets/WorkingSetConfigurationDialog.java
updateButtonAvailability();
	}
	private List moveUp(List elements, List move) {
		int nElements= elements.size();
		List res= new ArrayList(nElements);
		Object floating= null;
		for (int i= 0; i < nElements; i++) {
			Object curr= elements.get(i);
			if (move.contains(curr)) {
				res.add(curr);
			} else {
				if (floating != null) {
					res.add(floating);
				}
				floating= curr;
			}
		}
		if (floating != null) {
			res.add(floating);
		}
		return res;
	}
	private List reverse(List p) {
		List reverse= new ArrayList(p.size());
		for (int i= p.size() - 1; i >= 0; i--) {
			reverse.add(p.get(i));
		}
		return reverse;
	}
	private boolean canMoveUp() {