/**
  * get next level configs
  *
  * @param ConfigEntity $config config instance
  * @return array
  */
 public function children(ConfigEntity $config)
 {
     $descendants = $this->repo->fetchChildren($config->siteKey, $config->name);
     $children = [];
     /** @var ConfigEntity $descendant */
     foreach ($descendants as $descendant) {
         if ($descendant->getDepth() == $config->getDepth() + 1) {
             $children[] = $this->build($descendant);
         }
     }
     return $children;
 }
 /**
  * search descendants getter
  *
  * @param string $siteKey site key
  * @param string $name    the name
  * @return array
  */
 public function fetchChildren($siteKey, $name)
 {
     return $this->repo->fetchChildren($siteKey, $name);
 }