@Override
    protected void doStop() throws Exception {
        super.doStop();
        int openRequestsAtStop = openRequests.get();
        log.debug("Stopping with {} open requests", openRequestsAtStop);
        if (openRequestsAtStop > 0) {
            log.warn("There are still {} open requests", openRequestsAtStop);
        }
    }
@Test
    public void doStopOpenRequest() throws Exception {
        sut.openRequests.incrementAndGet();
        sut.doStop();
    }