abort method
Implementation
Future<void> abort({String? errorMessage}) async {
_isComplete = true;
await p.endTransaction(
EndTransactionRequest(
connectionOid: session.connection.connectionId.toByteList(),
errorMessage: errorMessage ?? 'abort',
sessionOid: session.sessionId.toByteList(),
transactionOid: transactionId.toByteList(),
),
);
}