return collator.compare(leftParent, rightParent);
int result= collator.compare(leftParent, rightParent); if (result == 0) return super.compare(viewer, e1, e2); else return result;
	public int compare(Viewer viewer, Object e1, Object e2) {		String leftParent= getParentName(e1);		String rightParent= getParentName(e2);		return collator.compare(leftParent, rightParent);	}