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