Annotation Interface ScriptCallable
Used to mark public methods on a 
ComponentModelDelegate that should be accessible to users in the script
 system. For example, if you had a method like:
 
   @ScriptCallable
   public void refresh() {
       super.fireEvent("refresh-me", new JsonObject());
   }
 
 Then the user could write a script that invoked your refresh() method on script references to your component.