public CKR C_EX_SignInvisibleInit(NativeULong session, ref CK_MECHANISM mechanism, NativeULong key) { if (_disposed) { throw new ObjectDisposedException(GetType().FullName); } NativeULong rv = _rutokenDelegates.C_EX_SignInvisibleInit(session, ref mechanism, key); return((CKR)rv); }