title: ASP.NET Identity Extend methods to access user properties
body: <p>As I can extend methods to access user properties?</p>
  
  <p>There are methods like:</p>
  
  <pre><code>User.Identity.GetUserId()
  User.Identity.GetUserName()
  </code></pre>
  
  <p>Which are accessible from the views and the controllers.</p>
  
  <p>I want to extend this functionality with methods like:</p>
  
  <pre><code>User.Identity.GetUserPhoneNumber()
  User.Identity.GetUserLanguaje()
  </code></pre>