});
    }

    /**
     * Sets the list of generator names.
     * @param generatorList The list of generator names.
     */
    public void setGeneratorList(final List<String> generatorList) {
        this.generatorList = generatorList;
    }

    @Override
    public String getName() {
        return name;
    }

    /**

    }

    public void setGenerator_Terms(Collection<String> generatorList) {
        setGenerator_Terms(generatorList, null);
    }

    public void setGenerator_Terms(Collection<String> generatorList, ConditionOptionCall<TermsQueryBuilder> opLambda) {
        TermsQueryBuilder builder = regTermsQ("generator", generatorList);
        if (opLambda != null) {
            opLambda.callback(builder);
        }

        assertEquals(1, thumbnailManager.generatorList.size());
    }

    // Test add generator not available
    public void test_add_unavailableGenerator() {
        TestThumbnailGenerator generator = new TestThumbnailGenerator();
        generator.available = false;

        thumbnailManager.add(generator);
        assertEquals(0, thumbnailManager.generatorList.size());
    }

    /**
     * Base directory for storing thumbnail files.
     */
    protected File baseDir;

    /**
     * List of available thumbnail generators.
     */
    protected final List<ThumbnailGenerator> generatorList = new ArrayList<>();

    /**
     * Queue for thumbnail generation tasks containing URL, content, and path tuples.
     */
    protected BlockingQueue<Tuple3<String, String, String>> thumbnailTaskQueue;

    /**