Should add Product's Id to the ProductStockCountChangedEto event.

samples/MicroserviceDemo/modules/product/src/ProductManagement.Domain/ProductManagement/Product.cs

@@ -91,7 +91,13 @@ namespace ProductManagement
 
             if (triggerEvent)
             {
-                AddDistributedEvent(new ProductStockCountChangedEto(StockCount, stockCount));
+                AddDistributedEvent(
+                    new ProductStockCountChangedEto(
+                        Id,
+                        StockCount,
+                        stockCount
+                    )
+                );
             }
 
             StockCount = stockCount;

samples/MicroserviceDemo/modules/product/src/ProductManagement.Domain/ProductManagement/ProductStockCountChangedEto.cs

@@ -6,6 +6,8 @@ namespace ProductManagement
     [Serializable]
     public class ProductStockCountChangedEto : EtoBase
     {
+        public Guid Id { get; }
+
         public int OldCount { get; set; }
 
         public int CurrentCount { get; set; }
@@ -15,8 +17,9 @@ namespace ProductManagement
             //Default constructor is needed for deserialization.
         }
 
-        public ProductStockCountChangedEto(int oldCount, int currentCount)
+        public ProductStockCountChangedEto(Guid id, int oldCount, int currentCount)
         {
+            Id = id;
             OldCount = oldCount;
             CurrentCount = currentCount;
         }