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