protected int numOfThreads = 1;

    protected boolean cleanup = false;

    public GenerateThumbnailJob numOfThreads(final int numOfThreads) {
        this.numOfThreads = numOfThreads;
        return this;
    }

    public GenerateThumbnailJob cleanup() {
        this.cleanup = true;
        return this;
    }

    @Override
    public String execute() {

            if (Constants.TRUE.equalsIgnoreCase(configParamMap.get(Config.CLEANUP_ALL))) {
                deleteCrawlData(sid);
            } else if (Constants.TRUE.equalsIgnoreCase(configParamMap.get(Config.CLEANUP_URL_FILTERS))) {
                final EsUrlFilterService urlFilterService = ComponentUtil.getComponent(EsUrlFilterService.class);
                try {

    }

    default void setDayForCleanup(final int value) {
        setSystemPropertyAsInt(Constants.DAY_FOR_CLEANUP_PROPERTY, value);
    }

    default int getDayForCleanup() {
        return getSystemPropertyAsInt(Constants.DAY_FOR_CLEANUP_PROPERTY, Constants.DEFAULT_DAY_FOR_CLEANUP);
    }

    default void setCrawlingThreadCount(final int value) {

labels.web_crawling_button_create_job=Create new job
labels.crawler_configuration=General Configuration
labels.crawler_title_edit=General Configuration
labels.schedule=Schedule
labels.enabled=Enabled
labels.day_for_cleanup=Remove Documents Before
labels.day=Day(s)
labels.crawl_button_update=Update
labels.none=None
labels.crawling_thread_count=Simultaneous Crawler Config
labels.incremental_crawling=Check Last Modified

labels.web_crawling_button_create_job=Create new job
labels.crawler_configuration=General Configuration
labels.crawler_title_edit=General Configuration
labels.schedule=Schedule
labels.enabled=Enabled
labels.day_for_cleanup=Remove Documents Before
labels.day=Day(s)
labels.crawl_button_update=Update
labels.none=None
labels.crawling_thread_count=Simultaneous Crawler Config
labels.incremental_crawling=Check Last Modified

labels.web_crawling_button_create = 작성
labels.web_crawling_button_create_job = 새 작업 만들기
labels.crawler_configuration = 일반 설정
labels.crawler_title_edit = 일반 설정
labels.schedule = 스케줄
labels.enabled = 사용
labels.day_for_cleanup = 이전 문서를 삭제
labels.day = 일
labels.crawl_button_update = 업데이트
labels.none = 없음
labels.crawling_thread_count = 동시 크롤러 설정
labels.incremental_crawling = 마지막 수정일 확인
labels.search_log_enabled = 검색 로그