/**
  * @see Object_Class_Data::getVersionPreview
  * @param float $data
  * @return float
  */
 public function getVersionPreview($data)
 {
     if ($data instanceof \Pimcore\Model\Object\Data\IndexFieldSelection) {
         return $data->getTenant() . " " . $data->getField() . " " . $data->getPreSelect();
     }
     return "";
 }