protected function onFileMoved($cmd, $result, $args, $elfinder) {
    $addedFiles = $result['added'];
    $removedFiles = $result['removed'];
    for ($i=0, $count=sizeof($removedFiles); $i<$count; $i++) {
      $source = $removedFiles[$i]['realpath'];
      $target = $elfinder->realpath($addedFiles[$i]['hash']);
    }
    $logger = $this->getLogger();
    $logger->debug($cmd." file: ".$source." -> ".$target);
  }