// Given
        request.setNotifyFlags(0);
        request.setCompletionFilter(0);

        // When - first write
        byte[] buffer1 = new byte[512];
        request.writeBytesWireFormat(buffer1, 0);

        // Update values
        request.setNotifyFlags(Smb2ChangeNotifyRequest.SMB2_WATCH_TREE);
        request.setCompletionFilter(0xFFF);

        // Second write
        byte[] buffer2 = new byte[512];

                    Smb2ChangeNotifyRequest request = new Smb2ChangeNotifyRequest();
                    request.setFileId(handle.directoryFile.getFileId());
                    request.setCompletionFilter(getNotificationFilter());
                    request.setWatchTree(false);  // Non-recursive for now
                    
                    Smb2ChangeNotifyResponse response = (Smb2ChangeNotifyResponse)