如何在protobuf-net中序列化非List 集合？

[ProtoContract]
public class C
{
  [ProtoMember(1)]
  public IList<string> Tags { get; set; }
}

class Program
{
  static void Main()
  {
    var m = RuntimeTypeModel.Default;
    m.AutoCompile = true;
    m.Add(typeof(IList<string>), false).AddSubType(1, typeof(ObservableCollection<int>));

    var c = new C { Tags = new ObservableCollection<string> { \"hello\" } };
    using (var ms = new MemoryStream())
    {
      Serializer.Serialize(ms, c);
      ms.Position = 0;
      var c2 = Serializer.Deserialize<C>(ms);
      Debug.Assert(c.Tags.Count == c2.Tags.Count);
      Debug.Assert(c.Tags.GetType() == c2.Tags.GetType());
    }
  }
}

List<T>

ObservableCollection<T>