}

    // Additional tests for parseQuery edge cases
    @Test
    public void testParseQueryWithExactly5Terms() {
        // Test query with exactly MAX_QUERY_TERM_NUM (5) terms - should succeed
        String query = "one two three four five";
        String field = "content";
        String[] keywords = SuggestUtil.parseQuery(query, field);
        assertNotNull(keywords);

        });
        refresh();
    }

    /**
     * Indexes suggest data from documents.
     *
     * @param success A callback for successful indexing.
     * @param error   A callback for indexing errors.
     */
    public void indexFromDocuments(final Consumer<Boolean> success, final Consumer<Throwable> error) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

    }

    /**
     * Starts a scheduled job by ID.
     *
     * @param id the ID of the scheduled job to start
     * @return JSON response indicating success or failure
     */
    // PUT /api/admin/scheduler/{id}/start
    @Execute(urlPattern = "{}/@word")
    public JsonResponse<ApiResult> put$start(final String id) {

    }

    /**
     * Deletes a user setting by ID.
     *
     * @param id the ID of the user setting to delete
     * @return JSON response indicating success or failure
     */
    // DELETE /api/admin/user/setting/{id}
    @Execute
    public JsonResponse<ApiResult> delete$setting(final String id) {
        final User entity = userService.getUser(id).orElseGet(() -> {

    }

    /**
     * Retrieves an extractor for the specified key.
     * If multiple extractors are associated with the key, returns a composite extractor
     * that tries each extractor in order until one succeeds.
     *
     * @param key the key to look up
     * @return the extractor for the key, or null if not found
     */
    public Extractor getExtractor(final String key) {

            final CountDownLatch latch = new CountDownLatch(1);

            logger.info("Parsing words from indexed documents.");
            suggestHelper.indexFromDocuments(ret -> {
                logger.info("Success indexing from documents.");
                latch.countDown();
            }, t -> {
                logger.error("Failed to update suggest index.", t);
                exitCode.set(1);
                latch.countDown();

suggester.removeDisableIndices();       // Cleanup old indices
```

**Async Operations:**
```java
suggester.suggest()
    .setQuery("search")
    .execute()
    .done(response -> { /* handle success */ })
    .error(throwable -> { /* handle error */ });
```

---

## Important Notes

### Thread Safety
- **Suggester**: Thread-safe for queries
- **SuggestIndexer**: Thread-safe for indexing

     * and cleanup operations.
     *
     * @param options parsed command-line options containing crawling configuration
     * @return exit code (Constants.EXIT_OK for success, Constants.EXIT_FAIL for failure)
     */
    private static int process(final Options options) {
        final Crawler crawler = ComponentUtil.getComponent(Crawler.class);

        <section class="content">
            <la:form action="/admin/general/">
                <div class="row">
                    <div class="col-md-12">
                        <div class="card card-outline card-success">
                            <div class="card-body">
                                <div>
                                    <la:info id="msg" message="true">

        }

        /**
         * Executes the crawling thread.
         * Sets the running flag, processes the data store, and ensures
         * proper cleanup regardless of success or failure.
         */
        @Override
        public void run() {
            running = true;
            try {
                process();
            } finally {
                running = false;