private static XmlObjectMappingItemCollection GetMappingItemsBySubClass(RelativeAttributes attrs, MemberInfo sourceMI)
        {
            XmlObjectMappingItemCollection items = new XmlObjectMappingItemCollection();

            System.Type subType = attrs.SubClassType != null ? attrs.SubClassType.Type : GetRealType(sourceMI);

            MemberInfo[] mis = GetTypeMembers(subType);

            foreach (XmlObjectSubClassMappingAttribute attr in attrs.SubClassFieldMappings)
            {
                MemberInfo mi = GetMemberInfoByName(attr.SubPropertyName, mis);

                if (mi != null)
                {
                    if (items.Contains(attr.NodeName) == false)
                    {
                        XmlObjectMappingItem item = new XmlObjectMappingItem(attr);

                        item.PropertyName         = sourceMI.Name;
                        item.SubClassPropertyName = attr.SubPropertyName;
                        item.MemberInfo           = mi;

                        if (attrs.SubClassType != null)
                        {
                            item.SubClassTypeDescription = attrs.SubClassType.TypeDescription;
                        }

                        items.Add(item);
                    }
                }
            }

            return(items);
        }
 private static void MergeMappingItems(XmlObjectMappingItemCollection dest, XmlObjectMappingItemCollection src)
 {
     foreach (XmlObjectMappingItem item in src)
     {
         if (dest.Contains(item.NodeName) == false)
         {
             dest.Add(item);
         }
     }
 }