HalBuilder: First steps

My team and I are working on trying to find best Java client to consume Hal REST services. I was trying HalBuilder and took me a time to figure a few tweaks to make the simple example describe in the website to work. Perhaps, I was doing something wrong, but just in case someone is also stuck on that, here's the code:

Maven Dependencies:

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<dependency>  <groupId>com.theoryinpractise</groupId>  <artifactId>halbuilder-api</artifactId>  <version>2.2.1</version> </dependency> <dependency>  <groupId>com.theoryinpractise</groupId>  <artifactId>halbuilder-core</artifactId>  <version>3.1.3</version> </dependency> <dependency>  <groupId>com.theoryinpractise</groupId>  <artifactId>halbuilder-json</artifactId>  <version>3.1.3</version> </dependency> <dependency>  <groupId>com.theoryinpractise</groupId>  <artifactId>halbuilder-standard</artifactId>  <version>3.0.1</version> </dependency>   <dependency>   <groupId>com.ning</groupId>   <artifactId>async-http-client</artifactId>   <version>1.8.9</version> </dependency>

Java code:

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import java.io.IOException; import java.io.InputStreamReader; import java.util.concurrent.ExecutionException;   import com.ning.http.client.AsyncHttpClient; import com.ning.http.client.Response; import com.theoryinpractise.halbuilder.api.ReadableRepresentation; import com.theoryinpractise.halbuilder.api.RepresentationFactory; import com.theoryinpractise.halbuilder.json.JsonRepresentationFactory;   //http://gotohal.net/ public class TestHalBuilderAPI {     public static void main(String[] args) throws InterruptedException, ExecutionException, IOException {   RepresentationFactory representationFactory = new JsonRepresentationFactory();   representationFactory.withFlag(RepresentationFactory.PRETTY_PRINT);        AsyncHttpClient asyncHttpClient = new AsyncHttpClient();   Response response = asyncHttpClient.prepareGet("http://gotohal.net/restbucks/api").execute().get();       InputStreamReader inputStreamReader = new InputStreamReader(response.getResponseBodyAsStream());      ReadableRepresentation representation = representationFactory.readRepresentation(inputStreamReader);   String ordersLinkUrl = representation.getLinkByRel("orders").getHref();    System.out.println(ordersLinkUrl);    asyncHttpClient.close();  } }