docs: private final synchronized boolean _incrementTotal(int sizeInBytes)
      {
          boolean doCallback = false;
  
          _countTotal++;
          if (_watermarkCountHigh == _countTotal)
          {
              doCallback = true;
          }
  
          boolean wasBelowHighLimit = (_countTotalBytes < _watermarkBytesHigh);
  
          _countTotalBytes = _countTotalBytes + sizeInBytes;
  
          if (wasBelowHighLimit && _countTotalBytes >= _watermarkBytesHigh)
          {
              doCallback = true;
          }
  
          return doCallback;
      }