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