public static string ToString(ImagePostMode mode)
 {
     switch (mode)
     {
     case ImagePostMode.Raw:
         return "raw";
     case ImagePostMode.NotRaw:
         return "not-raw";
     default:
         throw new ArgumentException("Invalid ImagePostMode");
     }
 }
        public static string ToString(ImagePostMode mode)
        {
            switch (mode)
            {
            case ImagePostMode.Raw:
                return("raw");

            case ImagePostMode.NotRaw:
                return("not-raw");

            default:
                throw new ArgumentException("Invalid ImagePostMode");
            }
        }