public static void Write(string filename, SettingsFormat settings)
 {
     DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(SettingsFormat));
     using (var stream = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.Read))
     {
         ser.WriteObject(stream, settings);
         stream.Flush();
     }
 }
        public static SettingsFormat CreateFrom(Settings settings)
        {
            SettingsFormat res = new SettingsFormat();

            res.BlockchainFolder = settings.BlockchainFolder;
            res.WalletFolder = settings.WalletFolder;

            return res;
        }