public static void shutdownAll() {
            throw new RuntimeException("Simulated exception during shutdown");
        }
    }

    // Test to verify the logger field is properly initialized
    public void test_loggerFieldInitialization() throws Exception {
        // Use reflection to access the private logger field
        Field loggerField = FessCurtainFinallyHook.class.getDeclaredField("logger");

            }
        };
        // Should not throw exception
        invokerAssistant.toBeDisposable(process);
    }

    // Test static constants are properly initialized
    public void test_staticConstants() {
        // Test DEFAULT_CLIENT_INVOKE_NAMES
        String[] clientNames = ImplementedInvokerAssistant.DEFAULT_CLIENT_INVOKE_NAMES;
        assertNotNull(clientNames);

    }

    @Test
    @DisplayName("getOffset before any read - should return zero")
    void testOffsetInitiallyZero() {
        assertEquals(0L, response.getOffset(), "Offset should be initialized to 0");
    }

    /* ------------------------------------------------------------------ */
    /* 2. Parameter word reading - happy path & edge cases                */

    private IngestFactory ingestFactory;

    @Override
    public void setUp() throws Exception {
        super.setUp();

        // Initialize IndexUpdater
        indexUpdater = new IndexUpdater();

        // Initialize mocks/test doubles
        systemHelper = new TestSystemHelper();
        indexingHelper = new TestIndexingHelper();
        intervalControlHelper = new TestIntervalControlHelper();

        } catch (JobProcessingException e) {
            assertTrue(e.getMessage().contains("Thumbnail Process terminated."));
        } catch (NullPointerException e) {
            // May occur if ServletContext is not fully initialized
            // This is acceptable in test environment
        }
    }

    // Test executeThumbnailGenerator with timeout
    public void test_executeThumbnailGenerator_withTimeout() {

   * its runtime check.
   *
   * <p>An example use case for this method is in implementing an {@code Iterator<T>} whose {@code
   * next} field is lazily initialized. The type of that field would be {@code @Nullable T}, and the
   * code would be responsible for populating a "real" {@code T} (which might still be the value

    /** Cache for storing statistics objects keyed by crawler object identifiers. */
    protected LoadingCache<String, StatsObject> statsCache;

    /**
     * Initializes the crawler statistics helper.
     * Sets up the statistics logger and creates the cache for storing
     * statistics objects with the configured size and expiration settings.
     */
    @PostConstruct

     */
    protected final List<DataCrawlingThread> dataCrawlingThreadList = Collections.synchronizedList(new ArrayList<>());

    /**
     * Creates a new instance of DataIndexHelper.
     * This constructor initializes the helper for managing data crawling operations,
     * including thread pool management and session-based crawling coordination.
     */
    public DataIndexHelper() {

        if (clazz != null) {
            return clazz;
        }
        return forName(className);
    }

    /**
     * Creates and initializes a new instance of the class using its default constructor.
     *
     * @param <T>
     *            The class represented by the {@link Class} object
     * @param clazz

                    break;
                }
            }
            ri += len;
        }

        return null;
    }

    /**
     * Initializes the security context with the given token.
     * @param token the input token bytes
     * @param offset offset into the token array
     * @param len length of token data
     * @return the output token bytes