public function coreMenu()
 {
     return array_merge(['admin' => ['label' => 'Администрирование', 'roles' => UserRole::ADMIN, 'items' => array_merge(ArticleAdminController::coreMenuItem(), [PageAdminController::coreMenuItem(), TextSectionAdminController::coreMenuItem()])], PageController::coreMenuItem()], ArticleController::coreMenuItem(), Page::getMenuItems());
 }