/**
* Paginate query results
* @param Builder $query
* @param integer $perPage
* @return array
*/
public function paginate($perPage = null)
{
$collectionClass = $this->collectionClass;
$perPage = $this->limit();
$this->paginated = $this->query->paginate($perPage);
$pagination = $this->paginated->toArray();
$this->collection = new $collectionClass(array_get($pagination, 'data'));
return $this->collection;
}