updated_onSubscriptionIntentVerified.bal

remote function onSubscriptionIntentVerified(readonly & websubhub:VerifiedSubscription subscription) returns error? {
    if !validNotificationSenderExists(subscription.hubTopic) {
        task:JobId notificationService = check startNotificationSender(subscription.hubTopic);
        lock {
            notificationSenders[subscription.hubTopic] = notificationService;
        }
    }
    string newsReceiverId = string `${subscription.hubTopic}-${subscription.hubCallback}`;
    lock {
        newsReceiversCache[newsReceiverId] = subscription;
    }
    check startNotificationReceiver(subscription);
}