feature: add a link to create a notification to the referrer

src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php

@@ -978,6 +978,11 @@ class AccompanyingPeriod implements
         return null !== $this->userPrevious;
     }
 
+    public function hasUser(): bool
+    {
+        return null !== $this->user;
+    }
+
     public function isChangedUser(): bool
     {
         return $this->userIsChanged && $this->user !== $this->userPrevious;