oneof command

[grzywkarafal]

is it possible to serialize in such case?

syntax = "proto3";

message GameMessage {
  oneof command {
      AccountLogin accountLogin = 1;
    }
}


message AccountLogin {
  string username = 1;
  string password = 2; 
}

I tried like this:
var game_message = protocol.GameMessage.new()

var account_login = game_message.new_accountLogin()

account_login.set_username("a")
account_login.set_password("a")

print(game_message.to_string())
var serialized_data = account_login.to_bytes()

but it looks like there is no packaging in oneof