notification-portlet-webapp/src/main/java/org/jasig/portlet/notice/service/event/PortletEventNotificationService.java
@Override
    public NotificationResponse fetch(HttpServletRequest request) {
        logger.trace("{} invoked for user '{}', but there is nothing to do",
                getClass().getSimpleName(), usernameFinder.findUsername(request));
        return NotificationResponse.EMPTY_RESPONSE;
    }
@Override
    public NotificationResponse fetch(HttpServletRequest request) {
        logger.trace("{} invoked for user '{}', but there is nothing to do",
                getClass().getSimpleName(), usernameFinder.findUsername(request));
        return NotificationResponse.EMPTY_RESPONSE;
    }
This {@link INotificationService} is fundamentally about Java Portlets, and there is nothing
it can offer to this overload of <code>fetch</code>.

@since 4.0