code: @XmlElementDecl(namespace = "http://www.citygml.org/ade/sub/0.9.0", name = "WallSurface", substitutionHeadNamespace = "http://www.citygml.org/ade/sub/0.9.0", substitutionHeadName = "_BoundarySurface")
      public JAXBElement<WallSurfaceType> createWallSurface(WallSurfaceType value) {
          return new JAXBElement<WallSurfaceType>(_WallSurface_QNAME, WallSurfaceType.class, null, value);
      }
docs: Create an instance of {@link JAXBElement }{@code <}{@link WallSurfaceType }{@code >}}