public function getOrderColumn()
    {
        $requestedColumnNames = $this->getRequestedColumnNames()->toArray();

        $order = request('order');

        $orderColumn = $requestedColumnNames[$order[0]['column']];

        if ($methodName = $this->hasCustomOrdering($orderColumn)) {
            $orderColumn = $this->class::$methodName();
        } elseif ($methodName = $this->hasCustomRawOrdering($orderColumn)) {
            // Convert it into an array so that parent function can return directly
            $orderColumn = [$this->class::$methodName($order[0]['dir'])];
        }

        return $orderColumn;
    }