Наследование: AbstractQueryService
 public ForumApplicationService(
     ForumQueryService forumQueryService,
     IForumRepository forumRepository,
     ForumIdentityService forumIdentityService,
     DiscussionQueryService discussionQueryService,
     IDiscussionRepository discussionRepository,
     ICollaboratorService collaboratorService)
 {
     this.forumQueryService = forumQueryService;
     this.forumRepository = forumRepository;
     this.forumIdentityService = forumIdentityService;
     this.discussionQueryService = discussionQueryService;
     this.discussionRepository = discussionRepository;
     this.collaboratorService = collaboratorService;
 }