Update inventory diagram to include form details

This also fixes the direction of the form inheritance, which was
reversed previously.

src/main/asciidoc/models/design/inventory.puml

@@ -61,11 +61,56 @@ package catering {
     InventoryInitializer .u.> Salespoint.UniqueInventoryItem
     InventoryInitializer .u.> Spring.Assert
 
-    class InventoryMutateForm
-    class ConsumableMutateForm
-    class RentableMutateForm
-    ConsumableMutateForm <|-- InventoryMutateForm
-    RentableMutateForm <|-- InventoryMutateForm
+    class InventoryMutateForm {
+      - name: String
+      - quantity: Long
+      - retailPrice: Double
+      - orderTypes: Set<OrderType>
+      - metric: Metric
+
+      + getName(): String
+      + getQuantity(): Long
+      + getRetailPrice() Double
+      + getMetric(): Metric
+      + getOrderTypes(): Set<OrderType>
+      + setName(name: String)
+      + setRetailPrice(Double retailPrice)
+      + setOrderTypes(orderTypes: Set<OrderType>)
+      + setMetric(metric: Metric)
+
+      + {static}forProductType<T extends Product>(Class<T> type): InventoryMutateForm
+      + {static}of(item: UniqueInventoryItem): InventoryMutateForm
+      + {abstract}toProduct(): Product
+      + modifyProduct(product: Product)
+      # {abstract}modifyProductPrimitive(product: Product)
+      + {static}orderTypesFromCategories(categories: Streamable<String>): Set<OrderType>
+      + supportedMetrics(): Collection<Metric>
+    }
+    class ConsumableMutateForm {
+      - wholesalePrice: Double
+      - promotionPrice: Optional<Double>
+
+      + getWholesalePrice(): Double
+      + getPromotionPrice(): Optional<Double>
+      + setWholesalePrice(wholesalePrice: Double)
+      + setPromotionPrice(promotionPrice: Optional<Double>)
+
+      + {static}of(item: UniqueInventoryItem): ConsumableMutateForm
+      + toProduct(): Product
+      # modifyProductPrimitive(product: Product)
+    }
+    class RentableMutateForm {
+      - wholesalePrice: Double
+
+      + getWholesalePrice(): Double
+      + setWholesalePrice(wholesalePrice: Double)
+
+      + {static}of(item: UniqueInventoryItem)
+      + toProduct(): Product
+      # modifyProductPrimitive(product: Product)
+    }
+    ConsumableMutateForm --|> InventoryMutateForm
+    RentableMutateForm --|> InventoryMutateForm
 
     InventoryMutateForm ..> Salespoint.Quantity