CBPSchedulerService::SubscribeOnEvent: Bitrix method

      
<?php 
//  CBPSchedulerService :: SubscribeOnEvent()
//  /dist/bitrix/modules/bizproc/classes/general/schedulerservice.php:113

    public function SubscribeOnEvent($workflowId, $eventHandlerName, $eventModule, $eventName, $entityId = null)
    {
        $entityKey = null;
        if (is_array($entityId))
        {
            foreach ($entityId as $entityKey => $entityId)
                break;
        }
        elseif ($entityId !== null)
        {
            $entityKey = 0;
        }

        if (!SchedulerEventTable::isSubscribed($workflowId, $eventHandlerName, $eventModule, $eventName, $entityId))
        {
            SchedulerEventTable::add(array(
                'WORKFLOW_ID' => (string)$workflowId,
                'HANDLER' => (string)$eventHandlerName,
                'EVENT_MODULE' => (string)$eventModule,
                'EVENT_TYPE' => (string)$eventName,
                'ENTITY_ID' => (string)$entityId
            ));
        }

        RegisterModuleDependences(
            $eventModule,
            $eventName,
            'bizproc',
            'CBPSchedulerService',
            'sendEvents',
            100,
            '',
            array($eventModule, $eventName, $entityKey)
        );
    }