namespace Org.BouncyCastle.X509 { public abstract class X509ExtensionBase : IX509Extension { protected abstract X509Extensions GetX509Extensions(); protected virtual ISet<string> GetExtensionOids(bool critical); public virtual ISet<string> GetNonCriticalExtensionOids(); public virtual ISet<string> GetCriticalExtensionOids(); public virtual Asn1OctetString GetExtensionValue(DerObjectIdentifier oid); protected X509ExtensionBase(); } }