Implementation of category updating.

codiki-domain/src/main/java/org/codiki/domain/category/model/builder/CategoryBuilder.java

@@ -17,6 +17,13 @@ public class CategoryBuilder {
 
     private CategoryBuilder() {}
 
+    public CategoryBuilder basedOn(Category category) {
+        this.id = category.id();
+        this.name = category.name();
+        this.subCategories = category.subCategories();
+        return this;
+    }
+
     public CategoryBuilder withId(UUID id) {
         this.id = id;
         return this;