* @param responseType
     * @return decoded data
     * @throws SmbException
     */
    @SuppressWarnings ( "unchecked" )
    public <T extends Decodable> T getOutputData ( Class<T> responseType ) throws SmbException {

        Decodable out = getOutputData();

        if ( out == null ) {
            throw new SmbException("Failed to decode output data");
        }

                resumeReq.setFlags(Smb2IoctlRequest.SMB2_O_IOCTL_IS_FSCTL);
                Smb2IoctlResponse resumeResp = sh.send(resumeReq);
                SrvRequestResumeKeyResponse rkresp = resumeResp.getOutputData(SrvRequestResumeKeyResponse.class);
                size = sfd.getInitialSize();
                resumeKey = rkresp.getResumeKey();

                req.setFlags(Smb2IoctlRequest.SMB2_O_IOCTL_IS_FSCTL);
                Smb2IoctlResponse resp = th.send(req, RequestParam.NO_RETRY);
                return ((SrvPipePeekResponse)resp.getOutputData()).getReadDataAvailable();
            }
            TransPeekNamedPipe req = new TransPeekNamedPipe(th.getConfig(), this.handle.getUncPath(), fd.getFid());

            }

            // other errors are treated as success
            return;
        }
        ValidateNegotiateInfoResponse out = resp.getOutputData(ValidateNegotiateInfoResponse.class);

        if ( nego.getSecurityMode() != out.getSecurityMode() || nego.getCapabilities() != out.getCapabilities()

                req.setFlags(Smb2IoctlRequest.SMB2_O_IOCTL_IS_FSCTL);
                req.setInputData(dfsReq);
                dfsResp = ipc.send(req).getOutputData(DfsReferralResponseBuffer.class);
            }
            else {
                Trans2GetDfsReferralResponse resp = new Trans2GetDfsReferralResponse(ctx.getConfig());