namespace System.Security.Cryptography.X509Certificates
{
    public class X509Certificate : IDisposable, IDeserializationCallback, ISerializable
    {
        [CLSCompliant(false)]
        [Obsolete("X509Certificate and X509Certificate2 are immutable. Use X509CertificateLoader to create a new certificate.", DiagnosticId = "SYSLIB0026", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")]
        public virtual void Import(string! fileName, SecureString? password, X509KeyStorageFlags keyStorageFlags);
    }
}