title: Different user types in a Google App Engine - Java application
body: <p>I've read that Google App Engine (GAE) provides user authentication using Google Accounts. My app caters to 3 different user types with different functionalities for all. I'm not able to figure out how do I proceed with setting up such a backend. I'm building the app in Java and for the front-end, I'll be using AngularJS.</p>
  
  <p>Please help me proceed in the right direction.</p>