public IndexModel(ILogger <IndexModel> logger, AuthChecker auth)
 {
     _auth   = auth;
     _logger = logger;
 }
 public static void SetDelegate(AuthChecker del)
 {
     _del = del;
 }
 public ReserveModel(ILogger <ReserveModel> logger, AuthChecker auth)
 {
     _auth   = auth;
     _logger = logger;
 }
 public EditModel(ILogger <EditModel> logger, AuthChecker auth)
 {
     _logger = logger;
     _auth   = auth;
 }
 public DisplayModel(ILogger <DisplayModel> logger, AuthChecker auth)
 {
     _logger = logger;
     _auth   = auth;
 }
 public CreateModel(ILogger <CreateModel> logger, AuthChecker auth)
 {
     _auth   = auth;
     _logger = logger;
 }