return myCurrentDelta;
return SVNFileUtil.DUMMY_OUT;
    public OutputStream textDeltaChunk(String path, SVNDiffWindow diffWindow) throws SVNException {        // save window, create temp file.        try {            if (myCurrentDelta == null) {                myDeltaFile = SVNFileUtil.createTempFile(".jasvsvn.", ".tmp");                myCurrentDelta = SVNFileUtil.openFileForWriting(myDeltaFile);            }            diffWindow.writeTo(myCurrentDelta, myIsFirstWindow);            myIsFirstWindow = false;            return myCurrentDelta;        } catch (IOException e) {            SVNFileUtil.closeFile(myCurrentDelta);            SVNFileUtil.deleteFile(myDeltaFile);            myDeltaFile = null;            SVNErrorMessage err = SVNErrorMessage.create(SVNErrorCode.IO_ERROR, e.getMessage());            SVNErrorManager.error(err, e);            return null;        }    }