/**
  * Augments (@link Hierarchy::liveChildren()}
  *
  * @param $staged DataList
  * @param $showAll boolean
  **/
 public function liveChildren($showAll = false, $onlyDeletedFromStage = false)
 {
     $staged = parent::liveChildren($showAll, $onlyDeletedFromStage);
     if ($this->shouldFilter()) {
         // Filter the SiteTree
         return $staged->exclude("ClassName", $this->owner->getExcludedSiteTreeClassNames());
     }
 }