public function requireCategoryTree($fetchForced = false)
 {
     if (!($fetchForced || $this->factory->getCategoryManager()->isEmpty())) {
         return $this;
     }
     $this->ghostQuery[self::QUERY_TREE] = array('category_tree' => array('version' => '2'));
     return $this;
 }
 /**
  * @return \AboutYou\SDK\Model\CategoryManager\CategoryManagerInterface
  */
 private function getCategoryManager()
 {
     return $this->factory->getCategoryManager();
 }