title: Add a reference to the System.IdentityModel.Tokens DLL
body: <p>How do I add a reference to the System.IdentityModel.Tokens dll?</p>
  
  <p>It does not seem to come up in the Nuget Package Manager.</p>
  
  <p>Do I need to download the DLL?</p>
  
  <p>I have .Net 4.5 installed.</p>
  
  <p>The following code will not compile without the reference:</p>
  
  <pre><code>SessionSecurityToken sst = e.SessionToken;
  </code></pre>