String ns = message.getVersion().getNamespace();
String defaultPrefix = writer.getPrefix(ns);
if (defaultPrefix == null) {
defaultPrefix = StaxUtils.getUniquePrefix(writer, ns, false);
writer.writeStartElement(defaultPrefix, "Fault", ns);
writer.writeNamespace(defaultPrefix, ns);
} else {
writer.writeStartElement(defaultPrefix, "Fault", ns);
}
writer.writeStartElement(defaultPrefix, "Code", ns);