title: Why dataTokens are in Route?
body: <pre><code> context.MapRoute("authorized-credit-card", "owners/{ownerKey}/authorizedcreditcard/{action}",
   new { controller = "authorizedcreditcard", action = "index" },
   new { ownerKey = nameFormat }, dataTokens: new { scheme = Uri.UriSchemeHttps });
  </code></pre>
  
  <p>In my route file I am having above kind of Route.</p>
  
  <p>So, could any one tell me what is the meaning of  <code>dataTokens: new { scheme = Uri.UriSchemeHttps</code> ?</p>
  
  <p>And usage of above <code>dataTokens</code> inside the controller's action method ?</p>