* {@link java.util.concurrent.CompletableFuture#whenCompleteAsync}. It also serves the use case
   * of {@link java.util.concurrent.CompletableFuture#thenAccept} and {@link
   * java.util.concurrent.CompletableFuture#thenAcceptAsync}.
   *
   * @param callback The callback to invoke when this {@code Future} is completed.

    try {
        InetAddress serverAddress = transport.getRemoteAddress();
        
        witnessClient.registerForNotifications(shareName, serverAddress, 
            new WitnessNotificationHandler())
            .thenAccept(registration -> {
                log.info("Registered for witness notifications: share={}, id={}", 
                    shareName, registration.getRegistrationId());
            })
            .exceptionally(error -> {

        try {
            InetAddress serverAddress = transport.getRemoteAddress().toInetAddress();

            witnessClient.registerForNotifications(shareName, serverAddress, new WitnessNotificationHandler()).thenAccept(registration -> {
                log.info("Registered for witness notifications: share={}, id={}", shareName, registration.getRegistrationId());
            }).exceptionally(error -> {