BaseX RESTXQ Content Negotiation

restxq.xqm

module namespace page = 'http://basex.org/modules/web-page';
declare
  %rest:path("content")
  %rest:produces("application/json")
   %output:method("json")
  function page:content1(){
  <json type="object">
  <msg>Hello</msg>
  </json>
  };
  
  declare
  %rest:path("content")
   %rest:produces("text/html")
   %output:method("html")
  function page:content2(){
  <div>hello</div>
  };