public String getResponseFieldSitePath() {
                return "site_path";
            }

            @Override
            public String getResponseFieldUrlLink() {
                return "url_link";
            }

            @Override
            public BigDecimal getQueryBoostImportantContentLangAsDecimal() {
                return new BigDecimal("-1.0");
            }

            @Override

            public String getResponseFieldSitePath() {
                return "site_path";
            }

            @Override
            public String getResponseFieldUrlLink() {
                return "url_link";
            }

            @Override
            public String getIndexFieldExpires() {
                return "expires";
            }

            @Override

      rawSource.use {
        val source = rawSource.buffer()
        val urlLine = source.readUtf8LineStrict()
        // Choice here is between failing with a correct RuntimeException
        // or mostly silently with an IOException
        url = urlLine.toHttpUrlOrNull() ?: throw IOException("Cache corruption for $urlLine").also {
          Platform.get().log("cache corruption", WARN, it)
        }

            }
            if (size >= 0) {
                return site;
            }
        }
        final Object urlLink = docMap.get(fessConfig.getResponseFieldUrlLink());
        if (urlLink != null) {
            final String returnUrl;
            final String url = urlLink.toString();
            if (LOCAL_PATH_PATTERN.matcher(url).find() || SHARED_FOLDER_PATTERN.matcher(url).find()) {