Update product and add types in payments (#458)

Author: armando-rodriguez-cko

src/main/java/com/checkout/payments/Product.java

@@ -5,11 +5,15 @@
 import lombok.Builder;
 import lombok.Data;
 
+import java.time.Instant;
+
 @Data
 @Builder
 @AllArgsConstructor
 public final class Product {
 
+    private ProductType type;
+
     private String name;
 
     private Long quantity;
@@ -47,4 +51,7 @@ public final class Product {
 
     private String sku;
 
+    @SerializedName("service_ends_on")
+    private Instant serviceEndsOn;
+
 }

src/main/java/com/checkout/payments/ProductType.java

@@ -38,6 +38,12 @@ public enum ProductType {
     INVOICE,
 
     @SerializedName("pay_later")
-    PAY_LATER
+    PAY_LATER,
+
+    @SerializedName("digital")
+    DIGITAL,
+
+    @SerializedName("physical")
+    PHYSICAL,
 
 }