event annotation should be accessible on runtime

scm-core/src/main/java/sonia/scm/event/Event.java

@@ -31,12 +31,27 @@
 
 package sonia.scm.event;
 
+//~--- non-JDK imports --------------------------------------------------------
+
+import sonia.scm.plugin.PluginAnnotation;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
 /**
  * This annotation marks classes which are receivable over the event bus of
- * scm-manager. This Event annotation is only for documentation and is not
- * accessible at runtime.
+ * scm-manager.
  *
  * @author Sebastian Sdorra
  * @since 1.33
  */
+@Documented
+@Target(ElementType.TYPE)
+@PluginAnnotation("event")
+@Retention(RetentionPolicy.RUNTIME)
 public @interface Event {}