title: Is there a way to put a version number in XML generated by XStream?
body: <p>I serialize my domainObjects using XStream.</p>
  
  <p>I would like to add some kind of versioning information to a generated xml file just in case my domain model changes.</p>
  
  <p>Is there a way to do it using xstream ?</p>
  
  <p>I vould prefer a parameter named "version" in a root tag (<code>&lt;object-stream&gt;</code>) but anything else would be good too.</p>
  
  <p>Thanks in advance.</p>