/**
  * create new instance and save it
  */
 public function save()
 {
     global $ilUser;
     $test_id = $_REQUEST["tst_id"];
     if ($test_id) {
         include_once "Modules/Test/classes/class.ilObjTest.php";
         $test = new ilObjTest($test_id, false);
         include_once "Modules/Test/classes/class.ilObjTestVerification.php";
         $newObj = ilObjTestVerification::createFromTest($test, $ilUser->getId());
         if ($newObj) {
             $parent_id = $this->node_id;
             $this->node_id = null;
             $this->putObjectInTree($newObj, $parent_id);
             $this->afterSave($newObj);
         } else {
             ilUtil::sendFailure($this->lng->txt("msg_failed"));
         }
     } else {
         ilUtil::sendFailure($this->lng->txt("select_one"));
     }
     $this->create();
 }