Merge pull request dotnet-architecture#856 from denjamal/Refactoring

Refactoring Buyer aggregate

Author: mvelosop

src/Services/Ordering/Ordering.Domain/AggregatesModel/BuyerAggregate/Buyer.cs

@@ -32,25 +32,23 @@ public PaymentMethod VerifyOrAddPaymentMethod(
             int cardTypeId, string alias, string cardNumber, 
             string securityNumber, string cardHolderName, DateTime expiration, int orderId)
         {
-            var existingPayment = _paymentMethods.Where(p => p.IsEqualTo(cardTypeId, cardNumber, expiration))
-                .SingleOrDefault();
+            var existingPayment = _paymentMethods
+                .SingleOrDefault(p => p.IsEqualTo(cardTypeId, cardNumber, expiration));
 
             if (existingPayment != null)
             {
                 AddDomainEvent(new BuyerAndPaymentMethodVerifiedDomainEvent(this, existingPayment, orderId));
 
                 return existingPayment;
             }
-            else
-            {
-                var payment = new PaymentMethod(cardTypeId, alias, cardNumber, securityNumber, cardHolderName, expiration);
 
-                _paymentMethods.Add(payment);
+            var payment = new PaymentMethod(cardTypeId, alias, cardNumber, securityNumber, cardHolderName, expiration);
 
-                AddDomainEvent(new BuyerAndPaymentMethodVerifiedDomainEvent(this, payment, orderId));
+            _paymentMethods.Add(payment);
 
-                return payment;
-            }
+            AddDomainEvent(new BuyerAndPaymentMethodVerifiedDomainEvent(this, payment, orderId));
+
+            return payment;
         }       
     }
 }