assertNull(pathMappingHelper.getPathMappingList(sessionId));
        assertNull(pathMappingHelper.getPathMappingList(sessionId + "1"));
        pathMappingHelper.setPathMappingList(sessionId, pathMappingList);
        assertNotNull(pathMappingHelper.getPathMappingList(sessionId));
        assertNull(pathMappingHelper.getPathMappingList(sessionId + "1"));
        pathMappingHelper.removePathMappingList(sessionId);

    /**
     * Gets the path mapping list with paging.
     *
     * @param pathMappingPager the path mapping pager
     * @return the path mapping list
     */
    public List<PathMapping> getPathMappingList(final PathMapPager pathMappingPager) {

        final PagingResultBean<PathMapping> pathMappingList = pathMappingBhv.selectPage(cb -> {

    }

    /**
     * Gets the path mapping list for a session.
     *
     * @param sessionId the session ID
     * @return the path mapping list
     */
    public List<PathMapping> getPathMappingList(final String sessionId) {
        if (sessionId == null) {
            return null;
        }
        return pathMappingMap.get(sessionId);
    }

    /**
     * Replaces URL for crawling.

     */
    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "pathMappingItems", pathMappingService.getPathMappingList(pathMapPager)); // page navi

        // restore from pager
        copyBeanToBean(pathMapPager, form, op -> op.include("regex", "replacement"));
    }

        validateApi(body, messages -> {});
        final PathMapPager pager = copyBeanToNewBean(body, PathMapPager.class);
        final List<PathMapping> list = pathMappingService.getPathMappingList(pager);
        return asJson(
                new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))

        crawler.dataIndexHelper = dataIndexHelper;

        pathMappingService = new PathMappingService() {
            @Override
            public List<org.codelibs.fess.opensearch.config.exentity.PathMapping> getPathMappingList(java.util.Collection<String> ptList) {
                return new ArrayList<>();
            }
        };
        crawler.pathMappingService = pathMappingService;

            ptList.add(Constants.PROCESS_TYPE_CRAWLING);
            ptList.add(Constants.PROCESS_TYPE_BOTH);
            pathMappingHelper.setPathMappingList(options.sessionId, pathMappingService.getPathMappingList(ptList));

            // duplicate host
            try {
                final DuplicateHostHelper duplicateHostHelper = ComponentUtil.getDuplicateHostHelper();
                duplicateHostHelper.init();