code: public synchronized void close() throws IOException {
  		for(int i=blocks.size() - 1; i>= 0; i--) {
  			blocks.remove(i).close();
  		}
  		size = 0;
  		pointer = 0;
  	}
docs: /* (non-Javadoc)
  @see org.processmining.framework.log.rfb.io.RandomAccessStorage#close()