??? XML Marshalling ??? Reading:??? The controller can use Grails XML marshalling support toimplement the GET method:import grails.converters.XMLclass ProductController {def show() {if (params.id && Product.exists(params.id)) {def p = Product.findByName(params.id)render p as XML}else {def all = Product.list()render all as XML}}..}??? If there is an id we search for the Product by name and return i