docs: private I_CmsWorkplaceAction getAction(VaadinRequest request) throws Exception {
  
          String dialogId = getDialogId(request);
          @SuppressWarnings("unchecked")
          Class<I_CmsWorkplaceAction> actionClass = (Class<I_CmsWorkplaceAction>)getClass().getClassLoader().loadClass(
              dialogId);
          return actionClass.newInstance();
      }