title: Can not find User.Identity.GetUserId() Method
body: <p>Using Visual Studio 2013 Express MVC application with references to
  MVC 5.2
  Asp.Net.Identity.Core 2.0</p>
  
  <p>inside any controller or from anywhere else in my application the method GetUserId() does not seem to exist and I can not for the life of my understand how that could be. I was under the impression it was a method included in Asp.Net Identity 2x. What might I be missing here?</p>