public async Task <string> CreateCode(string userId)
{
var guid = Guid.NewGuid().ToString();
var user = await Db.Users.FindAsync(int.Parse(userId));
var passportNumber = user.PassportNumber;
var licenseNumber = user.LicenseNumber;
var appId = user.AppID;
CodeBuilder builder = new CodeBuilder();
var hashedCode = builder
.AddAppId(appId)
.AddGUID(guid)
.AddLicenseNumber(licenseNumber)
.AddPassportNumber(passportNumber.ToString())
.Build();
codeVault.AddHashCodeToVault(hashedCode);
return(hashedCode);
}