break;
        case UNSUPPORTED_URL_AT_CRAWLING_STARTED:
            processUnsupportedUrlAtCrawlingStarted(objs);
            break;
        case CHECK_LAST_MODIFIED:
            processCheckLastModified(objs);
            break;
        case NOT_MODIFIED:
            processNotModified(objs);
            break;
        case GET_CONTENT:
            processGetContent(objs);
            break;