@Override
public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
FIXMLRoot root = (FIXMLRoot) source;
writer.addAttribute("v", root.getVersion());
writer.addAttribute("r", root.getReleaseDate());
writer.addAttribute("s", root.getSchemaDate());
context.convertAnother(root.getMessage());
}
