WellCommerce\Bundle\OrderBundle\Entity\OrderInterface::getSummary PHP Method

    public function getSummary() : OrderSummaryInterface;

 /**
  * Converts the order's gross total to target currency
  *
  * @param OrderInterface $order
  *
  * @return float
  */
 protected function convertAmount(OrderInterface $order)
 {
     $amount = $order->getSummary()->getGrossAmount();
     $baseCurrency = $order->getCurrency();
     return $this->getCurrencyHelper()->convert($amount, $baseCurrency);
 }