Improved typing of properties

src/Entity/Base/AbstractPartsContainingDBElement.php

@@ -22,6 +22,7 @@ declare(strict_types=1);
 
 namespace App\Entity\Base;
 
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 use Symfony\Component\Serializer\Annotation\Groups;
 
@@ -33,5 +34,5 @@ use Symfony\Component\Serializer\Annotation\Groups;
 abstract class AbstractPartsContainingDBElement extends AbstractStructuralDBElement
 {
     /** @Groups({"full"}) */
-    protected $parameters;
+    protected Collection $parameters;
 }