Yii::setAlias('@views', '/var/www/myapp/views');
$this->render('@views/myview.php');
Yii::setAlias('@mylib', '/var/www/mylib/libraries/mylib');
use mylib\models\Book;In these examples, it's difficult to determine what package library is being used, as they are just fictional directories. However, in a real-world scenario, the package library could be a third-party library, and the alias could be used to simplify the process of importing classes from that library.