protected AddWatchResult execute(AddWatchAction action, OWLAPIProject project, ExecutionContext executionContext) {
final EventManager<ProjectEvent<?>> eventManager = project.getEventManager();
EventTag startTag = eventManager.getCurrentTag();
WatchManager watchManager = project.getWatchManager();
watchManager.addWatch(action.getWatch(), action.getUserId());
return new AddWatchResult(eventManager.getEventsFromTag(startTag));
}