Prose\UsingPDODB::rollbackTransaction PHP Method

    public function rollbackTransaction()
    {
        // what are we doing?
        $log = usingLog()->startAction("rollback PDO database transaction");
        try {
            $this->args[0]->rollBack();
            // all done
            $log->endAction();
        } catch (Exception $e) {
            throw new E5xx_ActionFailed(__METHOD__, $e->getMessage());
        }
    }