code: @XmlElementDecl(namespace = "http://www.w3.org/1998/Math/MathML", name = "set")
      public JAXBElement<SetType> createSet(SetType value) {
          return new JAXBElement<SetType>(_Set_QNAME, SetType.class, null, value);
      }
docs: Create an instance of {@link JAXBElement }{@code <}{@link SetType }{@code >}}