assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_stackTracePresent() {
        // Test that stack trace is captured properly
        ScheduledJobException exception = new ScheduledJobException("Stack trace test");

        assertNotNull(exception.getStackTrace());

        // CommandExecutionException extends RuntimeException, not Error
        assertTrue(exception instanceof RuntimeException);
    }

    @Test
    public void test_stackTracePresent() {
        // Test that stack trace is properly captured
        CommandExecutionException exception = new CommandExecutionException("Stack trace test");