System.Security.Cryptography.X509Certificates.X509Certificate.GetNotAfter C# (CSharp) Method

        internal DateTime GetNotAfter()
        {
            ThrowIfInvalid();

            DateTime notAfter = _lazyNotAfter;
            if (notAfter == DateTime.MinValue)
                notAfter = _lazyNotAfter = Pal.NotAfter;
            return notAfter;
        }