private static void CheckPrinciple(SimpleWebToken swt)
        {
            IClaimsPrincipal principle = swt.ToPrinciple(nameClaimType: ClaimTypes.NameIdentifier);
            Assert.IsNotNull(principle);

            IClaimsIdentity identity = principle.Identity as IClaimsIdentity;
            Assert.IsNotNull(identity);

            if (identity != null)
            {
                foreach (var claim in identity.Claims)
                {
                    System.Console.WriteLine(string.Format("Claim Type: {0}, Claim Value: {1}", claim.ClaimType, claim.Value));
                }
            }
        }