/* * Copyright (c) 2002-2003 by OpenSymphony * All rights reserved. */package com.opensymphony.workflow.util;import java.io.PrintWriter;import java.io.Serializable;/** * DOCUMENT ME! * * @author $author$ * @version $Revision: 1.2 $ */public interface XMLizable extends Serializable {    //~ Static fields/initializers /////////////////////////////////////////////    public static final String INDENT = "  ";    //~ Methods ////////////////////////////////////////////////////////////////    public void writeXML(PrintWriter writer, int indent);}