taskList.clear();
        if (logger.isDebugEnabled()) {
            logger.debug("Storing {} thumbnail tasks.", list.size());
        }
        final ThumbnailQueueBhv thumbnailQueueBhv = ComponentUtil.getComponent(ThumbnailQueueBhv.class);
        thumbnailQueueBhv.batchInsert(list);
    }

    public int generate(final ExecutorService executorService, final boolean cleanup) {