final OpenSearchAccessResult accessResult2 = dataService.getAccessResult("id1", "http://www.id1.com/");
        assertNotNull(accessResult2);

        accessResult2.setMimeType("text/html");
        dataService.update(accessResult2);

        final AccessResult accessResult3 = dataService.getAccessResult("id1", "http://www.id1.com/");
        assertNotNull(accessResult3);
        assertEquals("text/html", accessResult3.getMimeType());

        final AccessResult accessResult2 = dataService.getAccessResult("id1", "http://www.id1.com/");
        assertNotNull(accessResult2);

        accessResult2.setMimeType("text/html");
        dataService.update(accessResult2);

        final AccessResult accessResult3 = dataService.getAccessResult("id1", "http://www.id1.com/");
        assertNotNull(accessResult3);
        assertEquals("text/html", accessResult3.getMimeType());

 *   <li>{@link #createIndexIfNothing()}: Creates a new index if no index exists.</li>
 *   <li>{@link #createNextIndex()}: Creates a new index and replaces the current update alias with the new index.</li>
 *   <li>{@link #switchIndex()}: Switches the search alias to the current update index.</li>
 *   <li>{@link #removeDisableIndices()}: Removes disabled indices.</li>
 *   <li>{@link #indexer()}: Creates a new SuggestIndexer for indexing suggestions.</li>

        // nothing
    }

    @Override
    public SuggestWriterResult write(final Client client, final SuggestSettings settings, final String index, final SuggestItem[] items,
            final boolean update) {
        throw new UnsupportedOperationException("not yet.");
    }

    @Override
    public SuggestWriterResult delete(final Client client, final SuggestSettings settings, final String index, final String id) {

        existingSource.put(FieldNames.TAGS, Arrays.asList("existing"));

        Map<String, Object> updated = item.getUpdatedSource(existingSource);

        assertNotNull(updated);
        assertEquals("test", updated.get(FieldNames.TEXT));
        assertEquals(25L, updated.get(FieldNames.QUERY_FREQ)); // 20 + 5
        assertEquals(20L, updated.get(FieldNames.DOC_FREQ)); // 10 + 10

        @SuppressWarnings("unchecked")

 * indicates the last time the Sitemap file was modified.  The {@code lastmod} attribute is used by crawlers
 * to incrementally fetch sitemaps that have been updated since a certain date.
 * </p>
 *
 * <p>
 * This class also provides implementations for {@code equals}, {@code hashCode}, and {@code toString} methods
 * to facilitate object comparison and representation.
 * </p>
 *

        // nothing
    }

    @Override
    public SuggestWriterResult write(final Client client, final SuggestSettings settings, final String index, final SuggestItem[] items,
            final boolean update) {
        final BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();

        final SuggestItem[] mergedItems = mergeItems(items);
        if (mergedItems.length == 0) {
            return new SuggestWriterResult();

        return client.prepareIndex();
    }

    @Override
    public ActionFuture<UpdateResponse> update(final UpdateRequest request) {
        return client.update(request);
    }

    @Override
    public void update(final UpdateRequest request, final ActionListener<UpdateResponse> listener) {
        client.update(request, listener);
    }

    @Override
    public UpdateRequestBuilder prepareUpdate() {

        }
        if (badWord.contains(" ") || badWord.contains("  ")) {
            return "badWord contains space.";
        }
        return null;
    }

    /**
     * Update default bad words.
     */
    protected static void updateDefaultBadwords() {
        if (defaultWords != null) {
            return;
        }

        final List<String> list = new ArrayList<>();

# Build specific module
mvn clean install -pl fess-crawler

# Generate test coverage report
mvn jacoco:report
```

### Code Quality

```bash
# Format code
mvn formatter:format

# Update license headers
mvn license:format

# Run static analysis
mvn spotbugs:check
```

### Running Tests

```bash
# Run all tests
mvn test

# Run specific test class