function _wdfb_initialize()
{
    if (apply_filters('wdfb-core-is_admin', WDFB_CORE_IS_ADMIN)) {
        require_once WDFB_PLUGIN_BASE_DIR . '/lib/class_wdfb_admin_help.php';
        require_once WDFB_PLUGIN_BASE_DIR . '/lib/class_wdfb_admin_form_renderer.php';
        require_once WDFB_PLUGIN_BASE_DIR . '/lib/class_wdfb_admin_pages.php';
        require_once WDFB_PLUGIN_BASE_DIR . '/lib/class_wdfb_tutorial.php';
        Wdfb_Tutorial::serve();
        Wdfb_AdminPages::serve();
    } else {
        require_once WDFB_PLUGIN_BASE_DIR . '/lib/class_wdfb_public_pages.php';
        Wdfb_PublicPages::serve();
    }
    require_once WDFB_PLUGIN_BASE_DIR . '/lib/class_wdfb_universal_worker.php';
    Wdfb_UniversalWorker::serve();
}
 public static function serve()
 {
     $me = new Wdfb_Tutorial();
     $me->_add_hooks();
 }