/** The key of the configuration. e.g. 262144000 */
    String HTTP_FILEUPLOAD_MAX_SIZE = "http.fileupload.max.size";

    /** The key of the configuration. e.g. 262144 */
    String HTTP_FILEUPLOAD_THRESHOLD_SIZE = "http.fileupload.threshold.size";

    /** The key of the configuration. e.g. groovy */
    String CRAWLER_DEFAULT_SCRIPT = "crawler.default.script";

    /** The key of the configuration. e.g. 0 */