private void FailedHandler(object sender, TransactionFailedEventArgs e)
 {
     TransactionFailed.Fire(this, e);
 }
 private void FailedHandler(object sender, TransactionFailedEventArgs e)
 {
     TransactionFailed.Fire(this, e);
 }
 protected void OnTransactionFailed(TransactionFailedEventArgs e)
 {
     if(TransactionFailed != null)
     {
         TransactionFailed(this, e);
     }
 }