úÎÒ½NoneDerive  instances for typName. typName  should be an instance of the   and   classes. *Name of the type to derive instances for.  persistent-protobuf-0.1.5#Database.Persist.TH.ProtocolBuffersDatabase.Persist PersistField Text.ProtocolBuffers.ReflectionsReflectDescriptor Text.ProtocolBuffers.WireMessageWirederivePersistFieldPB