static void AfterMap(LegacyGameSettings src, GameSettings dst)
        {
            var startupParameters = src.StartupParameters;

            if (startupParameters != null)
            {
                dst.StartupParameters.StartupLine = startupParameters;
            }
        }
 void MigrateOldGameSettings(LegacyGameSettings oldGameSettings, GameSettings gameSettings)
 {
     legacyEngine.Map(oldGameSettings, gameSettings, oldGameSettings.GetType(), gameSettings.GetType());
 }