code: @Override
      public void bootstrap(byte[] bytes) throws TTException {
          BlockDataElement data = new BlockDataElement(getPageTransaction().incrementDataKey(), bytes);
  
          if (mDelegate.getCurrentData() != null) {
              getPageTransaction().setData(data);
  
              mDelegate.moveTo(data.getDataKey());
          } else {
              getPageTransaction().setData(data);
              mDelegate.moveTo(data.getDataKey());
          }
  
      }
docs: {@inheritDoc}