title: spring RequestHeader annotation on model object?
body: <p>Can I put @RequestHeader on a model object property? I.e. </p>
  
  <pre><code>class MyModel {
      String ua;
      public void setUa(@RequestHeader("User-Agent") String ua) {
          this.ua = ua;
      }
  }
  </code></pre>
  
  <p>This works with @RequestParam, but seems to have no effect when I use @RequestHeader. Am I missing something? And, if this isn't supported, is there some reason why?</p>