* @return the decoded notification message
     * @throws NdrException if decoding fails
     */
    private WitnessNotificationMessage decodeNotificationMessage(NdrBuffer buf) throws NdrException {
        WitnessNotificationMessage message = new WitnessNotificationMessage();

        // Message type
        int messageType = buf.dec_ndr_long();
        message.setType(messageType);

        switch (messageType) {
        case WitnessAsyncNotifyMessage.WitnessNotificationMessage.WITNESS_RESOURCE_CHANGE:
            return WitnessEventType.RESOURCE_CHANGE;
        case WitnessAsyncNotifyMessage.WitnessNotificationMessage.WITNESS_CLIENT_MOVE:
            return WitnessEventType.CLIENT_MOVE;
        case WitnessAsyncNotifyMessage.WitnessNotificationMessage.WITNESS_SHARE_MOVE:
            return WitnessEventType.SHARE_MOVE;