title: Generated WEB API Help Area documentation does not show response body formats/samples
body: <p>I have created a help area documentation fro my web api 2 projects (based on owin/katana). I turned on everything setting in the config and installed <code>Microsoft.AspNet.WebApi.OData</code>. Currently I have the following settings:</p>
  
  <pre><code>config.SetSampleObjects(new Dictionary&lt;Type, object&gt;
  {
      {typeof(string), "sample string"},
      {typeof(IEnumerable&lt;string&gt;), new string[]{"sample 1", "sample 2"}}
  });
  
  config.SetSampleForMediaType(
      new TextSample("Binary JSON content. See http://bsonspec.org for details."),
      new MediaTypeHeaderValue("application/bson"));
  
  config.SetSampleForType("[0]=foo&amp;[1]=bar", new MediaTypeHeaderValue("application/x-www-form-urlencoded"), typeof(IEnumerable&lt;string&gt;));
  
  config.SetSampleRequest("1234", new MediaTypeHeaderValue("text/plain"), "Values", "Put");
  
  config.SetSampleResponse(new ImageSample("../images/aspNetHome.png"), new MediaTypeHeaderValue("image/png"), "Values", "Get", "id");
  
  config.SetActualRequestType(typeof(string), "Values", "Get");
  
  config.SetActualResponseType(typeof(string), "Values", "Post");
  </code></pre>
  
  <p>However, I don't any response sample being generated. My page supposed to look like this as I saw on the web</p>
  
  <p><a href="https://i.stack.imgur.com/1SNTC.png" rel="noreferrer"><img src="https://i.stack.imgur.com/1SNTC.png" alt="what it should look like"></a></p>
  
  <p>but it  it loos like this. How do I get to display sample response formats like JSON as shown in the first picture ?</p>
  
  <p><a href="https://i.stack.imgur.com/lBuRG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/lBuRG.png" alt="enter image description here"></a></p>