/**
  * Instance method to treat image serving for carousel thumb as a singleton bound to this controller instance
  * @return \ImageServing
  */
 private function carouselImageServingInstance()
 {
     if (empty(self::$imageserving)) {
         self::$imageserving = new ImageServing(null, self::THUMBNAIL_WIDTH, self::THUMBNAIL_HEIGHT);
     }
     return self::$imageserving;
 }
 /**
  * instance method to treat image serving for carousel thumb as a singleton bound to this controller instance
  */
 private function carouselImageServingInstance()
 {
     if (empty(self::$imageserving)) {
         self::$imageserving = F::build('ImageServing', array(null, self::THUMBNAIL_WIDTH, self::THUMBNAIL_HEIGHT));
     }
     return self::$imageserving;
 }