Approval.

de/appointment_contributor_roles.php

@@ -1,3 +1,9 @@
 <?PHP
-$appointment_contributor_roles['organizer'] = 'Organisation';
-$appointment_contributor_roles['presenter'] = 'Vortragender';
+declare(strict_types = 1);
+array (
+  'appointment_contributor_roles' => 
+  array (
+    'organizer' => 'Organisation',
+    'presenter' => 'Vortragender',
+  ),
+)