// All invocations should complete successfully
        assertTrue(true);
    }

    // Test with null assistant director (edge case)
    @Test
    public void test_hook_withNullAssistantDirector() {
        // Hook should handle null parameter gracefully
        curtainFinallyHook.hook(null);

        // Verify no NullPointerException is thrown
        assertTrue(true);
    }

        // Just verify it's not null and contains some meaningful info
        assertTrue("toString should not be empty", toString.length() > 0);
    }

    @Test
    public void test_hook_withNullAssistantDirector() {
        // When & Then - Should not throw exception
        try {
            curtainBeforeHook.hook(null);
        } catch (Exception e) {