value = stream((String[]) value).get(stream -> stream.collect(Collectors.joining("\n")));
                } else if (value instanceof List) {
                    @SuppressWarnings("unchecked")
                    final List<String> list = (List<String>) value;
                    value = list.stream().collect(Collectors.joining("\n"));
                }

        return request;
    }

    /**
     * Adds conversation history to the request, truncating from oldest to fit within the character budget.
     *
     * @param request the LLM chat request
     * @param history the conversation history (oldest first)
     * @param budgetChars the maximum total characters for history messages
     */

        if (highlightedQuerySet != null) {
            assertEquals(highlightedQuerySet.stream().sorted().collect(Collectors.joining("\n")),
                    set.stream().sorted().collect(Collectors.joining("\n")));
        }
        set.clear();
    }

    private void assertFieldLogs(Map<String, List<String>> fieldLogMap) {
        @SuppressWarnings("unchecked")

            servletContext.setSessionTrackingModes(
                    fessConfig.getSessionTrackingModesAsSet().stream().map(SessionTrackingMode::valueOf).collect(Collectors.toSet()));
        } catch (final Throwable t) {
            logger.warn("Failed to set SessionTrackingMode.", t);
        }

            states.entrySet()
                    .stream()
                    .filter(e -> (now - e.getValue().getExpiration()) / 1000L > getStateTtl())
                    .map(Map.Entry::getKey)
                    .collect(Collectors.toList())
                    .forEach(s -> {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Removing old state: {}", s);
                        }

        // (member:1.2.840.113556.1.4.1941:=%s)
        if (subRoleSet.isEmpty()) {
            return;
        }
        String filter = subRoleSet.stream().map(s -> String.format(groupFilter, s)).collect(Collectors.joining());
        if (subRoleSet.size() > 1) {
            filter = "(|" + filter + ")";
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Group filter: {}", filter);

                return Map.of();
            }
        }.getChildUrlRules(null, null).map(v -> v.getFirst() + ":" + v.getSecond()).collect(Collectors.joining(",")));
        assertEquals("//A:href", new FessXpathTransformer() {
            protected Map<String, String> getConfigPrameterMap(final ResponseData responseData, final ConfigName config) {

                    final List<String> docIds = urlResults.stream()
                            .map(doc -> (String) doc.get("doc_id"))
                            .filter(id -> id != null)
                            .collect(Collectors.toList());
                    final List<Map<String, Object>> fullDocs = fetchFullContent(docIds);
                    callback.onPhaseComplete(ChatPhaseCallback.PHASE_FETCH);
                    sources = fullDocs;

        // virtualHosts
        putResultDataBody(dataMap, fessConfig.getIndexFieldVirtualHost(),
                stream(crawlingConfig.getVirtualHosts()).get(stream -> stream.filter(StringUtil::isNotBlank).collect(Collectors.toList())));
        // id
        putResultDataBody(dataMap, fessConfig.getIndexFieldId(), crawlingInfoHelper.generateId(dataMap));
        // parentId
        String parentUrl = responseData.getParentUrl();