namespace Rapsys\AirBundle\Entity;
 
+use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\Event\PreUpdateEventArgs;
 
  */
 class Country {
        /**
-        * @var integer
+        * Primary key
         */
-       private $id;
+       private ?int $id = null;
 
        /**
-        * @var string
+        * Create datetime
         */
-       protected $code;
+       private \DateTime $created;
 
        /**
-        * @var string
+        * Update datetime
         */
-       protected $alpha;
+       private \DateTime $updated;
 
        /**
-        * @var string
+        * Users collection
         */
-       protected $title;
-
-       /**
-        * @var \DateTime
-        */
-       protected $created;
-
-       /**
-        * @var \DateTime
-        */
-       protected $updated;
-
-       /**
-        * @var ArrayCollection
-        */
-       protected $users;
+       private Collection $users;
 
        /**
         * Constructor
         * @param string $alpha The country alpha
         * @param string $title The country title
         */
-       public function __construct(string $code, string $alpha, string $title) {
+       public function __construct(private string $code, private string $alpha, private string $title) {
                //Set defaults
-               $this->code = $code;
-               $this->alpha = $alpha;
-               $this->title = $title;
                $this->created = new \DateTime('now');
                $this->updated = new \DateTime('now');
 
         *
         * @return integer
         */
-       public function getId(): int {
+       public function getId(): ?int {
                return $this->id;
        }