public void test_toBeDisposable_validProcess() {
        InvokerAssistant.DisposableProcess process = new InvokerAssistant.DisposableProcess() {
            @Override
            public void dispose() {
                // Empty implementation for test
            }
        };
        // Should not throw exception
        invokerAssistant.toBeDisposable(process);
    }

                ImageIO.write(thumbnail, fessConfig.getThumbnailHtmlImageFormat(), outputFile);
                image.flush();
                return Result.OK;
            } finally {
                reader.dispose();
            }
        }
        return Result.FAILED;
    }

    /**
     * Enumeration representing the possible results of thumbnail image processing.
     */
    protected enum Result {