// Verify cause's stack trace is also preserved
        assertNotNull(exception.getCause().getStackTrace());
        assertTrue(exception.getCause().getStackTrace().length > 0);
    }

    public void test_multiLevelCause() {
        // Test with nested exceptions
        Throwable rootCause = new IllegalStateException("Root problem");
        Throwable intermediateCause = new RuntimeException("Intermediate problem", rootCause);