(et, vl) -> ((ThumbnailQueue) et).setCreatedTime(DfTypeUtil.toLong(vl)), "createdTime");
        setupEpg(_epgMap, et -> ((ThumbnailQueue) et).getGenerator(),
                (et, vl) -> ((ThumbnailQueue) et).setGenerator(DfTypeUtil.toString(vl)), "generator");
        setupEpg(_epgMap, et -> ((ThumbnailQueue) et).getPath(), (et, vl) -> ((ThumbnailQueue) et).setPath(DfTypeUtil.toString(vl)),
                "path");

        systemHelper.calibrateCpuLoad();

        if (logger.isDebugEnabled()) {
            logger.debug("Processing thumbnail: {}", entity);
        }
        final String generatorName = entity.getGenerator();
        try {
            final File outputFile = new File(baseDir, entity.getPath());
            final File noImageFile = new File(outputFile.getAbsolutePath() + NOIMAGE_FILE_SUFFIX);