Common/EventListener/AbstractSaleListener.php
protected function updateKey(SaleInterface $sale)
    {
        if (0 == strlen($sale->getKey())) {
            $this->keyGenerator->generate($sale);

            return true;
        }

        return false;
    }
protected function updateKey(SaleInterface $sale)
    {
        if (0 == strlen($sale->getKey())) {
            $this->keyGenerator->generate($sale);

            return true;
        }

        return false;
    }
Updates the key.

@param SaleInterface $sale

@return bool Whether the sale key has been updated.