.param("size", ComponentUtil.getFessConfig().getPageDictionaryMaxFetchSize())
                .execute()) {
            final Map<String, Object> contentMap = response.getContent(OpenSearchCurl.jsonParser());
            @SuppressWarnings("unchecked")
            final List<Map<String, Object>> fileList = (List<Map<String, Object>>) contentMap.get("file");
            return fileList.stream().map(fileMap -> {

                .header("Accept", "application/json")
                .execute()) {
            final Map<String, Object> contentMap = response.getContent(OpenSearchCurl.jsonParser());
            if (logger.isDebugEnabled()) {
                logger.debug("response: {}", contentMap);
            }
            if (contentMap.containsKey("value")) {
                @SuppressWarnings("unchecked")