code: public void cleanup() {
      htDictionary.clear();
      memoryEstimate.decrementTotalMemory(byteArray.getSizeInBytes());
      memoryEstimate.decrementTotalMemory(getSizeOfIntArrays());
      memoryEstimate.decrementDictionaryMemory(byteArray.size());
    }
docs: A cleanup method that should be called before allowing the object to leave scope