Registry ioRegistry = civQuest.getTopRegistry().getSubRegistry("io");
Ruleset xmlSaveRuleset = ioRegistry.getRuleset("xmlSaveGame");
File file = chooser.getSelectedFile();
XMLSaveGameReader reader = new SaxSaveGameReader(xmlSaveRuleset);
LoadedData data = reader.read(file);
Messages.getMessages().info("LoadAction", "SaveGame", "Loaded data: " + data);
processLoadedData(data);