public IEnumerable<Transaction> GetLastTransactions(DateTime when)
{
var accessDateTimeEnd = new DateTime(when.Year, when.Month, when.Day, when.Hour, when.Minute, when.Second);
var accessDateTimeStart = accessDateTimeEnd.AddMinutes(-2);
return this.connection.Query<Transaction>(TransactionQuery, new { accessDateTimeStart, accessDateTimeEnd });
}