public void createBackupLog(UUID callerUuid, UUID txnId) {
        createBackupLog(callerUuid, txnId, false);
    }
@Test(expected = TransactionException.class)
    public void createBackupLog_whenAlreadyExist() {
        UUID callerUuid = UuidUtil.newUnsecureUUID();
        txService.createBackupLog(callerUuid, TXN);

        txService.createBackupLog(callerUuid, TXN);
    }