else if (encoding == "MathML-Presentation")
else
  update_BoxML_obj_Element(const typename Model::Element& el) const  {    String encoding = el.getAttribute("encoding");    if (encoding == "BoxML")      return getBoxMLElement(typename Model::ElementIterator(el, BOXML_NS_URI).element());    else if (encoding == "MathML-Presentation")      {	// this element can be associated to the corresponding model element	SmartPtr<BoxMLMathMLAdapter> adapter = getElement<BoxMLMathMLAdapterBuilder>(el);	adapter->setChild(getMathMLElement(typename Model::ElementIterator(el, MATHML_NS_URI).element()));	return adapter;      }    else      return createBoxMLDummyElement();  }