protected function buildApipAccessibility(DOMElement $data)
 {
     $ApipNodes = $this->queryXPath("*[name(.) = 'apipAccessibility']|*[name(.) = 'apip:apipAccessibility']", $data);
     if ($ApipNodes->length > 0) {
         common_Logger::i('is APIP item', array('QTI', 'TAOITEMS'));
         $apipNode = $ApipNodes->item(0);
         $apipXml = $apipNode->ownerDocument->saveXML($apipNode);
         $this->item->setApipAccessibility($apipXml);
     }
 }