@Override
    public Object getNegotiatedProperty(String propName) {
        assertComplete();

        switch (propName) {
            case Sasl.QOP:
                return selectedQop.getName();
            case Sasl.MAX_BUFFER:
                return Integer.toString(actualMaxReceiveBuffer != 0 ? actualMaxReceiveBuffer : configuredMaxReceiveBuffer);
            case Sasl.RAW_SEND_SIZE:
                return Integer.toString(maxBuffer);
        }

        return null;
    }