@Override
    public void unlock(QuotaResource quotaResource) {
      super.unlock(quotaResource);
      unlockAttemptCountMap.putIfAbsent(quotaResource, new AtomicInteger(0));
      unlockAttemptCountMap.get(quotaResource).incrementAndGet();
    }
Constructor for {@link TestQuotaResourceSynchronizer}.
@param quotaMetrics {@link QuotaMetrics} object.
ambry-quota/src/test/java/com/github/ambry/quota/QuotaResourceSynchronizerTest.java