code: @Override
  	public void serialize(XLog log, OutputStream out) throws IOException {
  		GZIPOutputStream gzos = new GZIPOutputStream(out);
  		BufferedOutputStream bos = new BufferedOutputStream(gzos);
  		super.serialize(log, bos);
  		bos.flush();
  		gzos.flush();
  		bos.close();
  		gzos.close();
  	}
docs: /* (non-Javadoc)
  @see org.deckfour.xes.out.XesXmlSerializer#serialize(org.deckfour.xes.model.XLog, java.io.OutputStream)