aeron-driver/src/main/java/io/aeron/driver/PublicationImage.java
public void addSubscriber(final SubscriptionLink subscriptionLink, final ReadablePosition subscriberPosition)
    {
        subscriberPositions = ArrayUtil.add(subscriberPositions, subscriberPosition);
        if (!subscriptionLink.isTether())
        {
            untetheredSubscriptions.add(new UntetheredSubscription(
                subscriptionLink, subscriberPosition, timeOfLastStatusMessageScheduleNs));
        }
    }
public void addSubscriber(final SubscriptionLink subscriptionLink, final ReadablePosition subscriberPosition)
    {
        subscriberPositions = ArrayUtil.add(subscriberPositions, subscriberPosition);
        if (!subscriptionLink.isTether())
        {
            untetheredSubscriptions.add(new UntetheredSubscription(
                subscriptionLink, subscriberPosition, timeOfLastStatusMessageScheduleNs));
        }
    }
{@inheritDoc}