protected function executeTransactionBlock($callable)
    {
        $exception = null;
        $this->state->flag(MultiExecState::INSIDEBLOCK);

        try {
            call_user_func($callable, $this);
        } catch (CommunicationException $exception) {
            // NOOP
        } catch (ServerException $exception) {
            // NOOP
        } catch (\Exception $exception) {
            $this->discard();
        }

        $this->state->unflag(MultiExecState::INSIDEBLOCK);

        if ($exception) {
            throw $exception;
        }
    }