/**
  * Creates the cache key for this widget.
  *
  * @return string
  *
  * @author Sebastian Diel <*****@*****.**>
  * @since 03.07.2012
  */
 public function WidgetCacheKey()
 {
     $key = SilvercartWidgetTools::ProductWidgetCacheKey($this);
     return $key;
 }