using System; [assembly:CLSCompliant(true)] namespace System { [AttributeUsage (AttributeTargets.All, AllowMultiple=true)] internal sealed class MonoTODOAttribute : Attribute { string comment; public MonoTODOAttribute () { } } } namespace System.Web { public partial class HttpBrowserCapabilities { [MonoTODO] public Version A { get { throw new Exception (); } } } } class Test { static void Main () { } }