$menu = new Menu;
$menu->add('Home', '');
$menu_user = $menu->add('Users', '');
$about = $menu->add('About', 'about');
$about->link->append(' <span class="caret"></span>');
$about->link->attributes(array('class' => 'link-item', 'target' => '_blank'));
$about->attributes('data-model', 'nice');
$about->add('Who we are?', array('url' => 'who-we-are', 'class' => 'navbar-item whoweare','display' => false));
$about->add('What we do?', array('url' => 'what-we-do', 'class' => 'navbar-item whatwedo'));
$menu->add('Portfolio', 'portfolio');
$menu->add('Contact', 'contact');
$hooks->do_action_ref_array( 'menuusers', array( &$menu ) );
$hooks->add_action('menuusers','showusernmenu');
function showusernmenu($menu) {
var_dump($menu);
echo $menu->asUl( array('class' => 'awesome-ul') );
}