options.numOfThreads = 4;
        options.cleanup = false;

        // Setup mock components with counter
        final AtomicInteger generateCallCount = new AtomicInteger(0);
        setupMockComponentsWithCounter(generateCallCount);

        Method processMethod = ThumbnailGenerator.class.getDeclaredMethod("process", ThumbnailGenerator.Options.class);
        processMethod.setAccessible(true);

        try {