*/
public class ThumbnailManager {
    private static final String NOIMAGE_FILE_SUFFIX = ".txt";

    /**
     * Default directory name for thumbnails.
     */
    protected static final String THUMBNAILS_DIR_NAME = "thumbnails";

    /**
     * Logger instance for this class.
     */
    protected static final Logger logger = LogManager.getLogger(ThumbnailManager.class);

    /**

        thumbnailManager = new TestThumbnailManager();
        thumbnailManager.baseDir = tempDir;
        thumbnailManager.thumbnailTaskQueue = new LinkedBlockingQueue<>(100);
        thumbnailManager.generating = false;
    }

    // Test implementation of ThumbnailManager to avoid container dependencies
    private class TestThumbnailManager extends ThumbnailManager {
        @Override

                    return 60;
                }
            };
            ComponentUtil.register(mockConfig, "fessConfig");

            // Register mock ThumbnailManager
            ThumbnailManager mockThumbnailManager = new ThumbnailManager() {
                private int callCount = 0;

                @Override
                public int generate(ExecutorService executorService, boolean cleanup) {

        super.setUp(testInfo);
        purgeThumbnailJob = new PurgeThumbnailJob();

        // Create a mock ThumbnailManager
        thumbnailManager = new MockThumbnailManager();

        ComponentUtil.register(thumbnailManager, "thumbnailManager");
    }

    @Override
    protected void tearDown(TestInfo testInfo) throws Exception {
        super.tearDown(testInfo);
    }

    private static final String RATE_LIMIT_HELPER = "rateLimitHelper";

    private static final String AUTHENTICATION_MANAGER = "authenticationManager";

    private static final String THUMBNAIL_MANAGER = "thumbnailManager";

    private static final String SSO_MANAGER = "ssoManager";

    private static final String PERMISSION_HELPER = "permissionHelper";

    private static final String QUERY_PARSER = "queryParser";

    @Resource
    protected SearchHelper searchHelper;

    /** Manager for handling thumbnail generation and display. */
    @Resource
    protected ThumbnailManager thumbnailManager;

    /** Helper for managing label types and label-based filtering. */
    @Resource
    protected LabelTypeHelper labelTypeHelper;

    /** Helper for query processing and transformation. */

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components>
	<component name="thumbnailManager" class="org.codelibs.fess.thumbnail.ThumbnailManager">
	</component>
	<component name="htmlThumbnailGenerator" class="org.codelibs.fess.thumbnail.impl.HtmlTagBasedGenerator">
		<property name="name">"htmlThumbnailGenerator"</property>
		<postConstruct name="addCondition">

        }
        try {
            if (fessConfig.isThumbnailCrawlerEnabled()) {
                final ThumbnailManager thumbnailManager = ComponentUtil.getThumbnailManager();
                final String thumbnailField = fessConfig.getIndexFieldThumbnail();
                docList.stream().forEach(doc -> {
                    if (!thumbnailManager.offer(doc)) {
                        if (logger.isDebugEnabled()) {

        indexingHelper.setDefaultRowSize(100);
        indexingHelper.setRequestInterval(500);
        ComponentUtil.register(indexingHelper, "indexingHelper");
        ComponentUtil.register(new ThumbnailManager(), "thumbnailManager");
        final CrawlingConfigHelper crawlingConfigHelper = new CrawlingConfigHelper();
        crawlingConfigHelper.init();
        ComponentUtil.register(crawlingConfigHelper, "crawlingConfigHelper");