title: What happens if the user closes an app that is already in the background?
body: <p>During a background task execution what will happen if the user kills the app (which already is in background mode)?</p>
  
  <p>Picture this:</p>
  
  <p>The app starts task X (with 10 min background support and a expiration handler that has to be called).
  Then, the app goes to background and the user kills the app.</p>
  
  <p>I'm confused on what will happen to task X after the app is killed. Does it still have that background time to execute? Does the expiration handler ever gets called?</p>