*/
    public static String sdh(final String input) {
        if (StringUtil.isBlank(input)) {
            return input;
        }
        return ComponentUtil.getDocumentHelper().encodeSimilarDocHash(input);
    }

    /**
     * Joins array or list elements into a single space-separated string.
     *
     * @param input the input object (String[], List, or String)

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final FileTypeHelper fileTypeHelper = ComponentUtil.getFileTypeHelper();
        final DocumentHelper documentHelper = ComponentUtil.getDocumentHelper();
        String url = responseData.getUrl();
        final String indexingTarget = crawlingConfig.getIndexingTarget(url);
        url = pathMappingHelper.replaceUrl(sessionId, url);

        final Object titleObj = dataMap.get(fessConfig.getIndexFieldTitle());
        if (titleObj != null) {
            dataMap.put(fessConfig.getIndexFieldTitle(),
                    ComponentUtil.getDocumentHelper().getTitle(responseData, titleObj.toString(), dataMap));
        }
    }

    /**
     * Processes robots meta tags in the HTML document.
     * Handles noindex, nofollow, and none directives.
     *

                    context.skipRoleQuery();
                } else if (similarDocHash != null) {
                    final DocumentHelper documentHelper = ComponentUtil.getDocumentHelper();
                    context.addQuery(boolQuery -> {
                        boolQuery.filter(QueryBuilders.termQuery(fessConfig.getIndexFieldContentMinhashBits(),