Common/EventListener/AbstractSaleListener.php
protected function configureAcceptedSale(SaleInterface $sale)
    {
        if (null === $date = $sale->getAcceptedAt()) {
            return false;
        }

        $changed = $this->updateExchangeRate($sale);

        $changed |= $this->updateLocale($sale);

        return $changed;
    }
protected function configureAcceptedSale(SaleInterface $sale)
    {
        if (null === $date = $sale->getAcceptedAt()) {
            return false;
        }

        $changed = $this->updateExchangeRate($sale);

        $changed |= $this->updateLocale($sale);

        return $changed;
    }
Updates the sale exchange rate.

@param SaleInterface $sale

@return bool Whether the sale has been changed.