protected function addOrderBy()
    {
        if (static::$versionTransformer->isOrdered()) {
            foreach (static::$versionTransformer->getOrderedColumns() as $index => $direction) {
                if (isset($this->columnNames[$index])) {
                    $this->builder->orderBy(
                        $this->columnNames[$index],
                        $direction
                    );
                }
            }
        }
    }