Umbraco-CMS/src/Umbraco.Core/UdiDefinitionAttribute.cs

using System;

namespace Umbraco.Cms.Core
{
    [AttributeUsage(AttributeTargets.Class, AllowMultiple = true, Inherited = false)]
    public sealed class UdiDefinitionAttribute : Attribute
    {
        public UdiDefinitionAttribute(string entityType, UdiType udiType)
        {
            if (string.IsNullOrWhiteSpace(entityType)) throw new ArgumentNullException("entityType");
            if (udiType != UdiType.GuidUdi && udiType != UdiType.StringUdi) throw new ArgumentException("Invalid value.", "udiType");
            EntityType = entityType;
            UdiType = udiType;
        }

        public string EntityType { get; private set; }

        public UdiType UdiType { get; private set; }
    }
}