namespace System.Security.Cryptography.X509Certificates
{
    public class X509Certificate2 : X509Certificate
    {
        [Obsolete("X509Certificate2.PrivateKey is obsolete. Use the appropriate method to get the private key, such as GetRSAPrivateKey, or use the CopyWithPrivateKey method to create a new instance with a private key.", DiagnosticId = "SYSLIB0028", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")]
        public AsymmetricAlgorithm? PrivateKey { get; set; }
    }
}