public YelpController(YelpRepository repository, AcceptableRestaurantsRepository acceptableRestaurantsRepository, SessionsRepository sessionsRepository, UserSessionsRepository userSessionsRepository)
 {
     _repository = repository;
     _acceptableRestaurantsRepository = acceptableRestaurantsRepository;
     _sessionsRepository     = sessionsRepository;
     _userSessionsRepository = userSessionsRepository;
 }
 public UserSessionsController(UserSessionsRepository repository)
 {
     _repository = repository;
 }