code: @Override
  	protected void extendStoreFiles(int oldBlockCount, int newBlockCount) throws DataStoreException
      {
          journal.extendStore(blockSize,oldBlockCount,newBlockCount);
      }
docs: /* (non-Javadoc)
  @see net.timewalker.ffmq4.storage.data.impl.AbstractBlockBasedDataStore#extendStoreFiles(int, int)