code: public static Element addElement(Element parent, String name) {
  
          return parent.addElement(new QName(name, Namespace.get("D", DEFAULT_NAMESPACE)));
      }
docs: Adds an xml element to the given parent and sets the appropriate namespace and
  prefix.<p>
  
  @param parent the parent node to add the element
  @param name the name of the new element
  
  @return the created element with the given name which was added to the given parent