public void merge(RoutingContext context) {
        RoutingNodeIterator it = context.getChildIterator();
        Reply reply = it.removeReply();
        LoadBalancer.Node target = (LoadBalancer.Node)context.getContext();

        boolean busy = false;
        for (int i = 0; i < reply.getNumErrors(); i++) {
            if (reply.getError(i).getCode() == ErrorCode.SESSION_BUSY) {
                busy = true;
            }
        }
        loadBalancer.received(target, busy);

        context.setReply(reply);
    }
Finds the TCP address of the target.

       @return Returns a hop representing the TCP address of the target, or null if none could be found.
documentapi/src/main/java/com/yahoo/documentapi/messagebus/protocol/LoadBalancerPolicy.java