public function resumeSession(AssessmentTestSession $session) {
        $deliveryExecutionState = $this->getSessionState($session);
        if ($deliveryExecutionState === DeliveryExecution::STATE_PAUSED) {
            $this->updateTimeReference($session);
            $this->getDeliveryExecution($session)->setState(DeliveryExecution::STATE_ACTIVE);
        }
    }