DX: type-hing oneToMany and ManyToMany properties as collection

src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialIssue.php

@@ -28,9 +28,10 @@ use Symfony\Component\Serializer\Annotation\Groups;
 class SocialIssue
 {
     /**
+     * @var Collection<SocialIssue>
      * @ORM\OneToMany(targetEntity=SocialIssue::class, mappedBy="parent")
      */
-    private $children;
+    private Collection $children;
 
     /**
      * @ORM\Column(type="datetime", nullable=true)
@@ -55,9 +56,10 @@ class SocialIssue
     private $parent;
 
     /**
+     * @var Collection<SocialAction>
      * @ORM\OneToMany(targetEntity=SocialAction::class, mappedBy="issue")
      */
-    private $socialActions;
+    private Collection $socialActions;
 
     /**
      * @ORM\Column(type="json")