// PUT api/values/5
 public HttpResponseMessage Put(int id, SomeValue value)
 {
     var resp = Request.CreateResponse(HttpStatusCode.OK);
     resp.Headers.Add("Foo", "foo");
     resp.Headers.Add("Bar", "bar");
     return resp;
 }
 // PUT api/values/5
 public void Put(int id, SomeValue value)
 {
 }
 // POST api/values
 public void Post(SomeValue value)
 {
 }