public AuthorizationController(ISigningSecurityKey signingSecurityKey, AuthenticationContext context)
 {
     this.signingSecurityKey = signingSecurityKey;
     this.context            = context;
 }
 public AuthorizationController(ISigningSecurityKey signingSecurityKey, UserManager <ApplicationUser> userManager)
 {
     this.signingSecurityKey = signingSecurityKey;
     this.userManager        = userManager;
 }