public function pauseActiveExecutions()
    {
        if (!$this->isRequestPost()) {
            throw new \common_exception_BadRequest('Invalid request. Only POST method allowed.');
        }

        $reason = $this->hasRequestParameter('reason') ? $this->getRequestParameter('reason') : [
            'reasons' => ['category' => 'Technical', 'subCategory' => 'ACT'],
            'comment' => __('Pause due to server maintenance'),
        ];
        /** @var DeliveryMonitoringService $monitoringService */
        $monitoringService = $this->getServiceLocator()->get(DeliveryMonitoringService::SERVICE_ID);
        $deliveryExecutions = $monitoringService->find(
            [DeliveryMonitoringService::STATUS => DeliveryExecution::STATE_ACTIVE],
            ['asArray' => true]
        );
        $ids = array_map(function ($deliveryExecution) {
            return $deliveryExecution['delivery_execution_id'];
        }, $deliveryExecutions);
        $stats = DeliveryHelper::pauseExecutions($ids, $reason);
        $paused = $stats['processed'];
        $notPaused = $stats['unprocessed'];

        $this->returnJson([
            'success' => true,
            'data' => [
                'message' => count($paused) . ' ' . __('sessions paused'),
                'processed' => $paused,
                'unprocessed' => $notPaused
            ]
        ]);
    }