protobuf-net multiple inheritance

gistfile1.cs

//in order to do this

[ProtoContract]
public class Base
{
  [ProtoMember(1)]
  public int Value { get;set;}
}

[ProtoContract]
public class Derived : Base {}


//you have to do this?
[ProtoContract]
[ProtoInclude(123, typeof(Derived)]
public class Base
{
  [ProtoMember(1)]
  public int Value { get;set;}
}

[ProtoContract]
public class Derived : Base {}

//but how do you handle
[ProtoContract]
public class DerivedFromDerived : Derived {}

//?

No way.

ProtoBuf.ProtoException: 'A type can only participate in one inheritance hierarchy'