public static void SetOptions(this global::Google.Protobuf.Reflection.OneofOptions obj, ProtogenOneofOptions value)
 => global::ProtoBuf.Extensible.AppendValue <ProtogenOneofOptions>(Serializer, obj, 1037, value);
 public static ProtogenOneofOptions GetOptions(this global::Google.Protobuf.Reflection.OneofOptions obj)
 => obj == null ? default : global::ProtoBuf.Extensible.GetValue <ProtogenOneofOptions>(Serializer, obj, 1037);