protected Collection getClasses(TopicIF instance) {
Set types = new CompactHashSet();
Iterator it = instance.getTypes().iterator();
while (it.hasNext()) types.addAll(getSupertypes((TopicIF) it.next()));
return types;
}
protected Collection getClasses(TopicIF instance) {
Set types = new CompactHashSet();
Iterator it = instance.getTypes().iterator();
while (it.hasNext()) types.addAll(getSupertypes((TopicIF) it.next()));
return types;
}