code: @Path(JaxRxConstants.SYSTEMPATH)
      @GET
      @Produces(MediaType.APPLICATION_XML)
      public StreamingOutput getSystem(@PathParam(JaxRxConstants.SYSTEM) final String system) {
  
          Systems.getInstance(system);
          final List<String> resources = new ArrayList<String>();
          resources.add(JaxRxConstants.JAXRX);
          return ResponseBuilder.buildDOMResponse(resources);
      }
docs: This method waits for calls to the specified URL {@link JaxRxConstants#SYSTEMPATH} and creates a
  response XML file
  containing the available further resources. In our case it just the {@link JaxRxConstants#JAXRXPATH}
  resource.
  
  @param system
  The associated system with this request.
  @return The available resources resources according to the URL path.