this.count = newCount; // write-volatile
        return null;
      } finally {
        unlock();
      }
    }

    /** Expands the table if possible. */
    @GuardedBy("this")
    void expand() {
      AtomicReferenceArray<E> oldTable = table;
      int oldCapacity = oldTable.length();
      if (oldCapacity >= MAXIMUM_CAPACITY) {
        return;
      }

    }.start();

    // give the second get a chance to run; it is okay for this to be racy
    // as the end result should be the same either way
    thirdSignal.await();
    Thread.yield();

    // Expand!
    CacheTesting.forceExpandSegment(cache, key);

    // start another waiting thread
    new Thread() {
      @Override
      public void run() {
        fourthSignal.countDown();

    }.start();

    // give the second get a chance to run; it is okay for this to be racy
    // as the end result should be the same either way
    thirdSignal.await();
    Thread.yield();

    // Expand!
    CacheTesting.forceExpandSegment(cache, key);

    // start another waiting thread
    new Thread() {
      @Override
      public void run() {
        fourthSignal.countDown();

                .replaceAll(Pattern.quote("${fess.index.number_of_shards}"), numberOfShards)//
                .replaceAll(Pattern.quote("${fess.index.auto_expand_replicas}"), autoExpandReplicas);
        for (final UnaryOperator<String> rule : docSettingRewriteRuleList) {
            source = rule.apply(source);
        }
        return source;
    }