}
    }

    @Test
    public void test_multipleJobExecutors() {
        // Test multiple JobExecutor instances
        JobExecutor executor1 = new TestJobExecutor();
        JobExecutor executor2 = new TestJobExecutor();

        AtomicInteger counter1 = new AtomicInteger(0);
        AtomicInteger counter2 = new AtomicInteger(0);

            return null;
        }

        @Override
        public void setResponseCharacterEncoding(String encoding) {
        }
    }

    private static class TestJobExecutor extends JobExecutor {
        boolean shutdownListenerAdded = false;

        @Override
        public void addShutdownListener(ShutdownListener listener) {
            shutdownListenerAdded = true;