TASK: Adjust to API changes from Neos

The onAfterHandle was introduced in the CommandHandlerInterface with neos/neos-development-collection#5468 and will be released with Neos 9 beta 19

Author: mficzel

Classes/CommandHook/UniqueIdentifierCommandHook.php

@@ -4,6 +4,8 @@
 
 use Neos\ContentRepository\Core\CommandHandler\CommandHookInterface;
 use Neos\ContentRepository\Core\CommandHandler\CommandInterface;
+use Neos\ContentRepository\Core\CommandHandler\Commands;
+use Neos\ContentRepository\Core\EventStore\PublishedEvents;
 use Neos\ContentRepository\Core\Feature\NodeCreation\Command\CreateNodeAggregateWithNode;
 use Neos\ContentRepository\Core\Feature\NodeModification\Command\SetNodeProperties;
 use Neos\ContentRepository\Core\NodeType\NodeTypeManager;
@@ -39,6 +41,11 @@ public function onBeforeHandle(CommandInterface $command): CommandInterface
         };
     }
 
+    public function onAfterHandle(CommandInterface $command, PublishedEvents $events): Commands
+    {
+        return Commands::createEmpty();
+    }
+
     private function handleSetNodeProperties(SetNodeProperties $command): CommandInterface
     {
         if (isset($command->propertyValues->values['identifier'])) {