}
public String modelToXml(String subsystemName, String childType, XMLElementWriter<SubsystemMarshallingContext> parser) throws Exception {
final ModelNode address = new ModelNode();
address.add("subsystem", subsystemName);
address.protect();
final ModelNode operation = new ModelNode();
operation.get(OP).set("read-children-resources");
operation.get("child-type").set(childType);
operation.get(RECURSIVE).set(true);