// Register your menus to the admin toolbar.
function wpturbo_register_my_custom_admin_menu() {
global $wp_admin_bar;
$args = array(
'id' => 'wpturbo-custom-menu',
'title' => __( 'My Menu', 'wpturbo' ),
'meta' => array(
),
);
$wp_admin_bar->add_menu($args);
}
add_action( 'wp_before_admin_bar_render', 'wpturbo_register_my_custom_admin_menu', 999 );