src/main/java/org/efaps/ui/wicket/components/menutree/MenuTree.java
@Override
    public void registerListener(final IRemoteUpdateListener _listener)
    {
        final MenuUpdateBehavior behavior = getBehaviors(MenuUpdateBehavior.class).get(0);
        behavior.register(_listener);
    }
@Override
    public void registerListener(final IRemoteUpdateListener _listener)
    {
        final MenuUpdateBehavior behavior = getBehaviors(MenuUpdateBehavior.class).get(0);
        behavior.register(_listener);
    }
{@inheritDoc}