public function standOnPauseIfMust()
    {
        if ($this->mustStandOnPause) {

            $this->iAmInPause = true;

            while ($this->canContinue === false) {

                $this->logger->info(getmypid() . " come to usleep for microseconds: " . $this->uSleepTime);
                usleep($this->uSleepTime);
                $this->logger->info(getmypid() . " wake up and start check subscription.");
                $this->checkSubscription();

                $this->logger->info(getmypid() . " _CONTINUE_ from infinity while. CanContinue: "
                    . serialize($this->canContinue));
            }

            $this->continueExecution();
        }

        return null;
    }