public ShippingCalculator(ShippingCostRepo shippingCostRepo, ZipCodeRepo zipCodeRepo)
 {
     _shippingCostRepo = shippingCostRepo;
     _zipCodeRepo = zipCodeRepo;
 }
 public ShippingCalculator(ShippingCostRepo shippingCostRepo, ZipCodeRepo zipCodeRepo)
 {
     _shippingCostRepo = shippingCostRepo;
     _zipCodeRepo      = zipCodeRepo;
 }