loadComponent('Flash'); } public function beforeFilter(\Cake\Event\EventInterface $event) { $this->Authentication->addUnauthenticatedActions(['add', 'index', 'view']); } }In this example, the AppController extends the CakePHP Controller class and adds a `Flash` component to it. The `initialize()` method is called when the controller is created and sets up any components or other properties that should be available to all actions. The `beforeFilter()` method is called before each action and adds some actions to the list of those that can be accessed by unauthenticated users. The package library for this example is likely CakePHP, a popular PHP web framework.