docs: public synchronized void setRequestBufferSize(int size) {
  
          if (size <= 0) {
              throw new IllegalArgumentException("request buffer size must be greater than zero");
          }
  
          if (this.requestBuffer.size() != 0) {
              throw new IllegalStateException("cannot resize non-empty ThreadPool request buffer");
          }
  
          this.requestBuffer = new BoundedBuffer(size);
          requestBufferInitialCapacity_ = size;
          requestBufferExpansionLimit_ = requestBufferInitialCapacity_ * 10;
      }