public static void EnforceInvariants(this BearerAccessToken token)
{
if (token.Expires == null)
{
throw new InvalidOperationException("Expires must not be null. Call SetExpires() to set");
}
}
public static DateTime SetExpires(this BearerAccessToken token, DateTime now)
{
token.Expires = now.ToUniversalTime().AddSeconds(token.ExpiresIn);
return(token.Expires.Value);
}
