> +   @Override
> +   public MessageStream apply(HttpResponse response) {
> +      // An empty message stream has a 204 response code
> +      if (response.getStatusCode() == 204) {
> +         return new Messages(ImmutableSet.<Message> of(), 
> ImmutableSet.<Link> of());
> +      }
> +
> +      MessagesWithHref messagesWithHref = json.apply(response);
> +
> +      // change the hrefs to ids
> +      List<Message> messages = Lists.newArrayList();
> +
> +      for (MessageWithHref messageWithHref: messagesWithHref) {
> +         Message message = 
> messageWithHref.toBuilder().id(getMessageId(messageWithHref.getId())).build();
> +         messages.add(message);
> +      }

```
MessagesWithHref messagesWithHref = json.apply(response);
Messages.Builder messages = new Messages.builder()
builder.messages(Iterables.transform(messagesWithHref, ...))
return builder.links(messagesWithHref.getLinks()).build();
```
?

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