@GetMapping(value = "/vets.xml", produces = MediaType.APPLICATION_XML_VALUE)
    @ResponseBody
    public
    Vets showXmlVetList() {
        return getVets();
    }
@author Juergen Hoeller
@author Mark Fisher
@author Ken Krebs
@author Arjen Poutsma
src/main/java/org/springframework/samples/petclinic/web/VetController.java