using System; namespace Google.ProtocolBuffers { public interface IGeneratedExtensionLite { int Number { get; } object ContainingType { get; } IMessageLite MessageDefaultInstance { get; } } public class GeneratedExtensionLite : IGeneratedExtensionLite { public int Number { get { throw new NotImplementedException(); } } public object ContainingType { get { throw new NotImplementedException(); } } public IMessageLite MessageDefaultInstance { get { throw new NotImplementedException(); } } } }