/**
  * 
  */
 public function toString()
 {
     $doc = new MMutableString();
     $doc->appendLine(S("<?xml version=\"1.0\"?>"));
     $doc->appendLine(parent::toString());
     return $doc;
 }
 /**
  * 
  *
  * @return MXMLElementView
  */
 public function __construct(MString $element, MString $text = null)
 {
     parent::__construct();
     $this->setElement($element);
     $this->setText($text);
 }