code: @RequestMapping(
              path = "/api",
              method = RequestMethod.GET,
              produces = {"application/hal+json", "application/json"}
      )
      public HalRepresentation getHomeDocument(final HttpServletRequest request) {
          final String homeUrl = request.getRequestURL().toString();
          return new HalRepresentation(
                  linkingTo()
                          .self(homeUrl)
                          .single(linkBuilder("search", "/api/products{?q,embedded}")
                                  .withTitle("Search Products")
                                  .withType("application/hal+json")
                                  .build())
                          .build()
          );
      }
docs: Entry point for the products REST API.
  
  @param request current request
  @return application/hal+json document containing links to the API.