final AtomicInteger count = new AtomicInteger(0);
        coordinatorHelper.addEventHandler("config_updated", event -> count.incrementAndGet());
        coordinatorHelper.addEventHandler("config_updated", event -> count.incrementAndGet());

        final EventInfo event = new EventInfo();
        event.name = "config_updated";
        coordinatorHelper.dispatchEvent(event);

        builder.build(
            new CacheLoader<String, Object>() {
              @Override
              public Object load(String key) throws InterruptedException {
                callCount.incrementAndGet();
                startSignal.await();
                return result;
              }
            });

    List<Object> resultArray = doConcurrentGet(cache, "bar", count, startSignal);

        builder.build(
            new CacheLoader<String, Object>() {
              @Override
              public Object load(String key) throws InterruptedException {
                callCount.incrementAndGet();
                startSignal.await();
                return result;
              }
            });

    List<Object> resultArray = doConcurrentGet(cache, "bar", count, startSignal);

        }
        throw new ClassCastException();
    }

    /**
     * @return session increased usage count
     */
    public SmbSessionImpl acquire() {
        long usage = this.usageCount.incrementAndGet();
        if (log.isTraceEnabled()) {
            log.trace("Acquire session " + usage + " " + this);
        }

        if (usage == 1) {
            synchronized (this) {

        }
        return wasInUse;
    }

    @Override
    protected long makeKey(final Request request) throws IOException {
        long m = this.mid.incrementAndGet() - 1;
        if (!this.smb2) {
            m = m % 32000;
        }
        ((CommonServerMessageBlock) request).setMid(m);
        return m;
    }

    @Override

     * the cleanupExecutor. If cleanup is not observed after a sufficient number of reads, try
     * cleaning up from the read thread.
     */
    void postReadCleanup() {
      if ((readCount.incrementAndGet() & DRAIN_THRESHOLD) == 0) {
        runCleanup();
      }
    }

    /**
     * Performs routine cleanup prior to executing a write. This should be called every time a write

     * the cleanupExecutor. If cleanup is not observed after a sufficient number of reads, try
     * cleaning up from the read thread.
     */
    void postReadCleanup() {
      if ((readCount.incrementAndGet() & DRAIN_THRESHOLD) == 0) {
        runCleanup();
      }
    }

    /**
     * Performs routine cleanup prior to executing a write. This should be called every time a write