public synchronized void lazyLoadChilderenIfNeeded(Object obj) {
internal_lazyLoadChilderenIfNeeded(obj);
if (obj instanceof UserNode) {
UserNode un = (UserNode) obj;
if (un.getChildCount() > 0) {
DefaultMutableTreeNode child = (DefaultMutableTreeNode) un.children().nextElement();
if (child instanceof UserNode) addListenerToFoundSet(((UserNode) child).getFoundSet());
}
} else if (obj instanceof RelationNode) {
RelationNode rn = (RelationNode) obj;
if (rn.getChildCount() > 0)
addListenerToFoundSet(((UserNode) rn.children().nextElement()).getFoundSet());
}
}
