Adldap\Query\Builder::getSortByDirection PHP Method

    public function getSortByDirection()
    {
        return $this->sortByDirection;
    }

 /**
  * Sorts LDAP search results.
  *
  * @param array $models
  *
  * @return array
  */
 private function processSort(array $models = [])
 {
     $collection = $this->newCollection($models);
     $sort = [$this->builder->getSortByField() => $this->builder->getSortByDirection()];
     $criteria = (new Criteria())->orderBy($sort);
     return $collection->matching($criteria)->toArray();
 }