typename MathMLBuilderMap::const_iterator m = mathmlMap.find(el.get_localName());
typename MathMLBuilderMap::const_iterator m = mathmlMap.find(Model::getNodeName(Model::asNode(el)));
  getMathMLElementNoCreate(const typename Model::Node& el) const  {    if (el)      {	//std::cout << "createMathMLElement " << el.get_localName() << std::endl;	typename MathMLBuilderMap::const_iterator m = mathmlMap.find(el.get_localName());	if (m != mathmlMap.end()) 	  return (this->*(m->second))(el);      }    return 0;  }