// update pager
            BeanUtil.copyBeanToBean(kuromojiList, kuromojiPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
            kuromojiList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
            kuromojiPager.setPageNumberList(kuromojiList.createPageNumberList());

            return (List<KuromojiItem>) kuromojiList;

            // update pager
            BeanUtil.copyBeanToBean(protwordsList, protwordsPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
            protwordsList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
            protwordsPager.setPageNumberList(protwordsList.createPageNumberList());

            return (List<ProtwordsItem>) protwordsList;

            // update pager
            BeanUtil.copyBeanToBean(stopwordsList, stopwordsPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
            stopwordsList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
            stopwordsPager.setPageNumberList(stopwordsList.createPageNumberList());

            return (List<StopwordsItem>) stopwordsList;

            // update pager
            BeanUtil.copyBeanToBean(synonymList, synonymPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
            synonymList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
            synonymPager.setPageNumberList(synonymList.createPageNumberList());

            return (List<SynonymItem>) synonymList;
        }).orElse(Collections.emptyList());

            // update pager
            BeanUtil.copyBeanToBean(stemmerOvberrideList, stemmerOvberridePager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
            stemmerOvberrideList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
            stemmerOvberridePager.setPageNumberList(stemmerOvberrideList.createPageNumberList());

            return (List<StemmerOverrideItem>) stemmerOvberrideList;

            // update pager
            BeanUtil.copyBeanToBean(charMappingList, charMappingPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
            charMappingList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
            charMappingPager.setPageNumberList(charMappingList.createPageNumberList());

            return (List<CharMappingItem>) charMappingList;

        }

        /**
         * Sets the page range size for navigation.
         *
         * @param pageRangeSize the page range size to set
         */
        public void setPageRangeSize(final int pageRangeSize) {
            this.pageRangeSize = pageRangeSize;
        }

        /**
         * Creates a list of page numbers for navigation.
         *