Models cannot be final because of NullModels

Models/Calendar.php

@@ -24,7 +24,7 @@ use phpOMS\Stdlib\Base\SmartDateTime;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class Calendar
+class Calendar
 {
 
     /**

Models/Event.php

@@ -26,7 +26,7 @@ use phpOMS\Stdlib\Base\Location;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class Event
+class Event
 {
 
     /**

Models/EventTemplate.php

@@ -22,7 +22,7 @@ namespace Modules\Calendar\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class EventTemplate extends Event
+class EventTemplate extends Event
 {
     /**
      * Type.

Models/NullCalendar.php

@@ -22,7 +22,7 @@ namespace Modules\Calendar\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class NullCalendar extends Calendar
+class NullCalendar extends Calendar
 {
 
 }

Models/NullEvent.php

@@ -22,7 +22,7 @@ namespace Modules\Calendar\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class NullEvent extends Event
+class NullEvent extends Event
 {
 
 }

Models/NullSchedule.php

@@ -22,6 +22,6 @@ namespace Modules\Calendar\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class NullSchedule extends Schedule
+class NullSchedule extends Schedule
 {
 }

Models/Schedule.php

@@ -24,7 +24,7 @@ use phpOMS\Stdlib\Base\Exception\InvalidEnumValue;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class Schedule
+class Schedule
 {
     /**
      * Schedule ID.