public ChatSession(final String userId) {
        this();
        this.userId = userId;
    }

    /**
     * Gets the session ID.
     *
     * @return the session ID
     */
    public String getSessionId() {
        return sessionId;
    }

    /**
     * Sets the session ID.
     *
     * @param sessionId the session ID
     */
    public void setSessionId(final String sessionId) {

    @Test
    public void test_sessionIdIsUnique() {
        final ChatSession session1 = new ChatSession();
        final ChatSession session2 = new ChatSession();
        assertFalse(session1.getSessionId().equals(session2.getSessionId()));
    }

            // Initialize test access result
        }

        @Override
        public String getId() {
            return "test_id";
        }

        @Override
        public String getSessionId() {
            return "test_session";
        }

        @Override
        public String getRuleId() {
            return "test_rule";
        }

        @Override

                "expiredTime");
        setupEpg(_epgMap, et -> ((CrawlingInfo) et).getName(), (et, vl) -> ((CrawlingInfo) et).setName(DfTypeUtil.toString(vl)), "name");
        setupEpg(_epgMap, et -> ((CrawlingInfo) et).getSessionId(), (et, vl) -> ((CrawlingInfo) et).setSessionId(DfTypeUtil.toString(vl)),
                "sessionId");
    }

    @Override
    public PropertyGateway findPropertyGateway(final String prop) {

            return null;
        }

        @Override
        public Long getLastModified() {
            return null;
        }

        @Override
        public String getSessionId() {
            return null;
        }

        @Override
        public Long getCreateTime() {
            return null;
        }

        @Override

                        crawlerList.get(i).awaitTermination();
                        crawlerStatusList.set(i, Constants.DONE);
                        final String sid = crawlerList.get(i).getCrawlerContext().getSessionId();
                        indexUpdater.addFinishedSessionId(sid);
                        activeCrawlerNum--;
                    }
                }
                ThreadUtil.sleep(crawlingExecutionInterval);

                session.addMessage(assistantMessage);
                logger.info("[RAG] Chat completed (unclear). sessionId={}, elapsedTime={}ms", session.getSessionId(),
                        System.currentTimeMillis() - startTime);
                return new ChatResult(session.getSessionId(), assistantMessage, Collections.emptyList());
            }

            // For SUMMARY intent, search by URL; for SEARCH/FAQ, search with query

    }

    @Test
    public void test_crawlingInfo_entity() {
        final CrawlingInfo info = new CrawlingInfo();
        assertNull(info.getId());
        assertNull(info.getSessionId());
        assertNull(info.getName());
        assertNull(info.getExpiredTime());
        assertNull(info.getCreatedTime());

        info.setId("info-id");
        info.setSessionId("session-123");

            final String url = urlQueue.getUrl();
            ResponseData responseData = null;
            try {
                final CrawlingConfig crawlingConfig = crawlingConfigHelper.get(crawlerContext.getSessionId());
                final Map<String, Object> dataMap = new HashMap<>();
                dataMap.put(fessConfig.getIndexFieldUrl(), url);
                final List<String> roleTypeList = new ArrayList<>();

                logger.debug("Chat request completed. sessionId={}, responseLength={}", result.getSessionId(),
                        result.getMessage().getContent() != null ? result.getMessage().getContent().length() : 0);
            }

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