private bool CheckIfVinAlreadyExists(TransactionExecutor transactionExecutor, string vin)
{
IIonValue ionVin = this.valueFactory.NewString(vin);
IResult selectResult = transactionExecutor.Execute("SELECT VIN FROM VehicleRegistration AS v WHERE v.VIN = ?", ionVin);
return(selectResult.Any(x => x.GetField("VIN").StringValue == vin));
}
