@Override
 void initUnpooled(PoolChunk<ByteBuffer> chunk, int length) {
   super.initUnpooled(chunk, length);
   initMemoryAddress();
 }
 @Override
 void init(PoolChunk<ByteBuffer> chunk, long handle, int offset, int length, int maxLength) {
   super.init(chunk, handle, offset, length, maxLength);
   initMemoryAddress();
 }