WordPress: wp_get_nav_menu_object()

<?php
$menu = wp_get_nav_menu_object( 'Test' );
$menu_items = wp_get_nav_menu_items( $menu->term_id );

foreach ( $menu_items as $item ) {
    if( $item->menu_item_parent != 0 )
    $current_items[] = $item;
}

$output = walk_nav_menu_tree( $current_items, 0, array() );
echo '<ul>'.$output.'</ul>';


?>