assertEquals("User 2", messages.get(0).getContent());
        assertEquals(ChatMessage.ROLE_ASSISTANT, messages.get(1).getRole());
        assertEquals("Assistant 2", messages.get(1).getContent());
        assertEquals(ChatMessage.ROLE_USER, messages.get(2).getRole());
        assertEquals("User 3", messages.get(2).getContent());
        assertEquals(ChatMessage.ROLE_ASSISTANT, messages.get(3).getRole());

        assertEquals("", documentHelper.getContent(null, responseData, "", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, " ", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, "  ", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, "\t", dataMap));

        assertEquals("Q1", history.get(0).getContent());
        assertEquals("assistant", history.get(1).getRole());
        assertEquals("A1", history.get(1).getContent());
        assertEquals("user", history.get(2).getRole());
        assertEquals("Q2", history.get(2).getContent());
        assertEquals("assistant", history.get(3).getRole());
        assertEquals("A2", history.get(3).getContent());
    }

    @Test

                        result.getMessage().getContent() != null ? result.getMessage().getContent().length() : 0);
            }

            writeJsonResponse(response, HttpServletResponse.SC_OK,
                    createSuccessResponse(result.getSessionId(), result.getMessage().getContent(), result.getMessage().getSources()));

        } catch (final Exception e) {

     */
    public void setRole(final String role) {
        this.role = role;
    }

    /**
     * Gets the message content.
     *
     * @return the message content
     */
    public String getContent() {
        return content;
    }

    /**
     * Sets the message content.
     *
     * @param content the message content
     */
    public void setContent(final String content) {

    //                                       ---------------
    protected final Map<String, PropertyGateway> _epgMap = newHashMap();
    {
        setupEpg(_epgMap, et -> ((RelatedContent) et).getContent(), (et, vl) -> ((RelatedContent) et).setContent(DfTypeUtil.toString(vl)),
                "content");
        setupEpg(_epgMap, et -> ((RelatedContent) et).getCreatedBy(),

        try (final InputStream in = responseData.getResponseBody()) {
            final ExtractData extractData = getExtractData(extractor, in, createExtractParams(responseData, crawlingConfig));
            content = extractData.getContent();
            if (fessConfig.isCrawlerDocumentFileIgnoreEmptyContent() && StringUtil.isBlank(content)) {
                return null;
            }
            if (getLogger().isDebugEnabled()) {

            for (final LlmMessage msg : request.getMessages()) {
                logger.debug("[LLM] message: role={}, content={}", msg.getRole(), msg.getContent());
            }
        }
        try {
            final LlmClient client = getAvailableClient();
            if (logger.isDebugEnabled()) {

     * @param content the raw content text to process
     * @param dataMap additional data map
     * @return the normalized content, or empty string if content is null
     */
    public String getContent(final CrawlingConfig crawlingConfig, final ResponseData responseData, final String content,
            final Map<String, Object> dataMap) {
        if (content == null) {
            return StringUtil.EMPTY; // empty