public GalaxyController(ISessionManager sessionManager, IGalaxyManager galaxyManager)
        {
            if (sessionManager == null) throw new ArgumentNullException("sessionManager");
            if (galaxyManager == null) throw new ArgumentNullException("galaxyManager");

            _sessionManager = sessionManager;
            _galaxyManager = galaxyManager;
        }
 public RegisterModel(
     UserManager <AppIdentityUser> userManager,
     SignInManager <AppIdentityUser> signInManager,
     ILogger <RegisterModel> logger,
     IEmailSender emailSender,
     IGalaxyManager galaxyManager)
 {
     _userManager   = userManager;
     _signInManager = signInManager;
     _logger        = logger;
     _emailSender   = emailSender;
     _galaxyManager = galaxyManager;
 }