XStream xstream = new XStream();
XBirdCollectionStrategy<String, Object> strategy = new XBirdCollectionStrategy<String, Object>(COLLECTION_NAME, xstream);
xstream.processAnnotations(RendezvousMessage.class);
RendezvousMessage msg1 = new RendezvousMessage(15, Arrays.asList(new Author("anonymous"), new Author("makoto")));
System.out.println(xstream.toXML(msg1));
System.out.println();
RendezvousMessage msg2 = new RendezvousMessage(15, Arrays.asList(new Author("anonymous")), "firstPart", "secondPart");
System.out.println(xstream.toXML(msg2));
System.out.println();