DataSyncManager::getAllEventByParentId

private function getAllEventByParentId(int $parentId): array
{
	$eventIdList = EventTable::query()
		->setSelect(['ID'])
		->where('PARENT_ID', $parentId)
		->exec()
		->fetchAll()
	;

	return array_map(static function($event){
		return (int)$event['ID'];
	}, $eventIdList);
}