getCurrency() public method

public getCurrency ( ) : string
return string
 public function calculate(ShippingMethodInterface $shippingMethod, ShippingSubjectInterface $subject) : Collection
 {
     $ranges = $shippingMethod->getCosts();
     $baseCurrency = $subject->getCurrency();
     $targetCurrency = $shippingMethod->getCurrency()->getCode();
     $grossAmount = $this->currencyConverter->convert($subject->getGrossPrice(), $baseCurrency, $targetCurrency);
     return $this->filterRanges($ranges, $grossAmount);
 }
 public function calculate(ShippingMethodInterface $shippingMethod, ShippingSubjectInterface $subject) : Collection
 {
     $ranges = $shippingMethod->getCosts();
     $baseCurrency = $subject->getCurrency();
     $targetCurrency = $shippingMethod->getCurrency()->getCode();
     $grossAmount = $this->currencyConverter->convert($subject->getGrossPrice(), $baseCurrency, $targetCurrency);
     return $ranges->filter(function (ShippingMethodCostInterface $cost) use($grossAmount) {
         return $cost->getRangeFrom() <= $grossAmount && $cost->getRangeTo() >= $grossAmount;
     });
 }