}
    }

    private static class TestShutdownListener implements JobExecutor.ShutdownListener {
        private boolean shutdownCalled = false;

        @Override
        public void onShutdown() {
            shutdownCalled = true;
        }

        public boolean wasShutdownCalled() {
            return shutdownCalled;
        }
    }

        boolean shutdownListenerAdded = false;

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

        @Override
        public Object execute(String scriptType, String script) {
            return null;
        }
    }

        @Override
        public void addShutdownListener(ShutdownListener listener) {
            shutdownListenerAdded = true;
            // Optionally execute the listener to test its behavior
            listener.onShutdown();
        }

        @Override
        public Object execute(String scriptType, String script) {
            return null;
        }
    }