return null;
        }
        int start = entryDn.toLowerCase(Locale.ROOT).indexOf("cn=");
        if (start == -1) {
            return null;
        }
        start += 3;

        final int end = entryDn.indexOf(',', start);
        final String value = end == -1 ? entryDn.substring(start) : entryDn.substring(start, end);
        if (fessConfig.isLdapGroupNameWithUnderscores()) {

                return startPosition;
            }

            final String start = request.getParameter("start");
            if (StringUtil.isBlank(start)) {
                startPosition = fessConfig.getPagingSearchPageStartAsInteger();
            } else {
                try {
                    startPosition = Integer.parseInt(start);
                } catch (final NumberFormatException e) {

        protected final SearchRequestBuilder searchRequestBuilder;
        protected String query;
        protected String[] responseFields;
        protected int offset = Constants.DEFAULT_START_COUNT;
        protected int size = Constants.DEFAULT_PAGE_SIZE;
        protected GeoInfo geoInfo;
        protected FacetInfo facetInfo;
        protected HighlightInfo highlightInfo;