* @throws PACDecodingException if the sequence cannot be decoded
     */
    public KerberosApRequest(ASN1Sequence seq, KerberosKey[] keys) throws PACDecodingException {
        Enumeration<?> fields = seq.getObjects();
        while (fields.hasMoreElements()) {
            ASN1TaggedObject tagged = ASN1Util.as(ASN1TaggedObject.class, fields.nextElement());
            switch (tagged.getTagNo()) {
            case 0:

            putValue(data, "Sender", message.getSender());
            putValue(data, "Sent-Date", message.getSentDate());
            putValue(data, "Size", message.getSize());
            putValue(data, "Subject", message.getSubject());
            putValue(data, "Receipients", message.getAllRecipients());
            putValue(data, "To", message.getRecipients(Message.RecipientType.TO));

            ASN1TaggedObject tagged = (ASN1TaggedObject) der.readObject();
            final ASN1Sequence sequence = ASN1Sequence.getInstance(tagged, true);
            final Enumeration<?> fields = sequence.getObjects();
            while (fields.hasMoreElements()) {
                tagged = (ASN1TaggedObject) fields.nextElement();
                switch (tagged.getTagNo()) {
                case 0:

                throws SmbException {
            // Not used within these tests
            throw new SmbException("not used in tests");
        }

        @Override
        public Subject getSubject() {
            return null; // not relevant for renew() behavior
        }

        @Override
        public void refresh() throws CIFSException {
            // no-op for tests
        }

        @Override

            log.debug("Initial session preauth hash " + Hexdump.toHexString(this.preauthIntegrityHash));
        }

        while (true) {
            Subject s = this.credentials.getSubject();
            if (ctx == null) {
                ctx = createContext(trans, tdomain, negoResp, !anonymous, s);
            }
            token = createToken(ctx, token, s);

            if (token != null) {

        if (t.isAssignableFrom(this.getClass())) {
            return (T) this;
        }
        return null;
    }

    @Override
    public Subject getSubject() {
        return null;
    }

    @Override
    public void refresh() throws CIFSException {
    }

    /**
     *
     * {@inheritDoc}
     *