DWR like Javascript client for REST

Was trying to find a Javascript client for REST api. Seems like there isnt a one available. The idea is simple if you have a Java class annotated using JSR 311 annotations than one can write a tool like DWR that can at compile time or at runtime introspect Java classes and generate a stub.

If there is a class like

 1    // The Java class will be hosted at the URI path "/helloworld"
2    @Path("/helloworld")
3    public class HelloWorldResource {
4   
5        // The Java method will process HTTP GET requests
6        @GET
7        // The Java method will produce content identified by the MIME Media
8        // type "text/plain"
9        @Produces("text/plain")
10        public String getClichedMessage() {
11            // Return some cliched textual content
12            return "Hello World";
13        }

14    }

than requesting a script like /Jersey/RESTClient/HelloWorldResource.js should generate a javascript class that takes primitives/JSON as method params and form a proper REST Url and invoke the URL and gets the result and returns it using AJAX. I am unable to find a library like this so far therefore will try to write one