public static void AddItemChecked(this ProjectRootElement root, string itemType, string include)
 {
     if (!root.HasItem(itemType, include))
     {
         root.AddItem(itemType, include);
     }
 }
        public static bool AddItemChecked(this ProjectRootElement root, string itemType, string include)
        {
            if (!root.HasItem(itemType, include, noCondition: true))
            {
                root.AddItem(itemType, include);
                return(true);
            }

            return(false);
        }