code: @XmlElementDecl(namespace = "http://www.w3.org/2001/XMLSchema", name = "group", scope = Group.class)
      public JAXBElement<GroupRef> createGroupGroup(GroupRef value) {
          return new JAXBElement<GroupRef>(_Group_QNAME, GroupRef.class, Group.class, value);
      }
docs: Create an instance of {@link JAXBElement }{@code <}{@link GroupRef }{@code >}}