Nakama Dotnet Clinet Prase JSON ERROR

Client Libraries
1

I Found A error about JSON Prase.
i define message Like this in protobuf，
map<string, Wish> wishlist,
message Wish{
//some
//
}

then generate ApiClinet.gen.cs
Get Dictronary<string, IWish> wishList ///

IWish is wrong ,when prase Json from string, it get type Nakame.IWish is is a interface 。cannot be instantiate