public function performPaste()
 {
     if (!in_array($_SESSION['clipboard']['cmd'], array('cut'))) {
         $message = __METHOD__ . ": cmd was not 'cut' ; may be a hack attempt!";
         $this->ilias->raiseError($message, $this->ilias->error_obj->WARNING);
     }
     if ($_SESSION['clipboard']['cmd'] == 'cut') {
         if (isset($_GET['target_node']) && (int) $_GET['target_node']) {
             $_POST['nodes'] = array($_GET['target_node']);
             $this->performPasteIntoMultipleObjectsObject();
         }
     }
     $this->ctrl->returnToParent($this);
 }
 public function cancelSaveAttachments()
 {
     $this->ctrl->setParameter($this, 'type', 'attach');
     $this->ctrl->returnToParent($this);
 }