code: @GET
      public Response getResource(@PathParam(JaxRxConstants.SYSTEM) final String system,
          @PathParam(JaxRxConstants.RESOURCE) final String resource, @Context final UriInfo uri,
          @Context final HttpHeaders headers) {
  
          return getResource(system, uri, resource, headers);
      }
docs: This method returns a collection of available resources. An available
  resource can be either a particular XML resource or a collection containing
  further XML resources.
  
  @param system
  The associated system with this request.
  @param resource
  The name of the requested resource.
  @param uri
  The context information due to the requested URI.
  @param headers
  {@link HttpHeaders} information.
  @return A collection of available resources.