public class MyE4Application implements IApplication {
	private E4Application e4app;

	@Override
	public Object start(IApplicationContext context) throws Exception {
		E4Application e4app = new E4Application();
		Object ret = e4app.start(context);
		... change the return code ...	
		return ret;
	}

	@Override
	public void stop() {
		e4app.stop();
	}
}