/**
  * Import XML
  *
  * @param
  * @return
  */
 function importXmlRepresentation($a_entity, $a_id, $a_xml, $a_mapping)
 {
     $role_folder_id = $a_mapping->getMapping('Services/AccessControl', 'rolf', 0);
     include_once './Services/AccessControl/classes/class.ilRoleXmlImporter.php';
     include_once './Services/AccessControl/classes/class.ilObjRole.php';
     $importer = new ilRoleXmlImporter($role_folder_id);
     $importer->setXml($a_xml);
     $importer->setRole(new ilObjRole());
     $importer->import();
 }