@Override
 public void load(
     String indexName,
     OBinarySerializer valueSerializer,
     boolean isAutomatic,
     OBinarySerializer keySerializer,
     OType[] keyTypes,
     boolean nullPointerSupport,
     int keySize,
     Map<String, String> engineProperties) {
   hashTable.load(indexName, keyTypes, nullPointerSupport);
   hashFunction.setValueSerializer(hashTable.getKeySerializer());
 }