/// <summary>
/// Gets the standard subject claims.
/// </summary>
/// <param name="subject">The subject.</param>
/// <returns>A list of standard claims</returns>
protected virtual IEnumerable<Claim> GetStandardSubjectClaims(ClaimsPrincipal subject)
{
var claims = new List<Claim>
{
new Claim(JwtClaimTypes.Subject, subject.GetSubjectId()),
new Claim(JwtClaimTypes.AuthenticationTime, subject.GetAuthenticationTimeEpoch().ToString(), ClaimValueTypes.Integer),
new Claim(JwtClaimTypes.IdentityProvider, subject.GetIdentityProvider()),
};
claims.AddRange(subject.GetAuthenticationMethods());
return claims;
}