public RssItemActionService(
     ISessionProvider sessionProvider,
     IRssActionRepository rssItemActionRepository)
 {
     this.sessionProvider         = sessionProvider;
     this.rssItemActionRepository = rssItemActionRepository;
 }
 public RssItemActionService(IRssActionRepository rssItemActionRepository,
     IUserAuthentication authentication)
 {
     this.rssItemActionRepository = rssItemActionRepository;
     this.authentication = authentication;
 }