title: Firebase Notifications through server-side code
body: <p>The new Firebase notifications service allows us to use a Console UI to post notifications to all mobile app users. </p>
  
  <p>But I could not find any REST API for the Firebase Notifications Service. I want to send notifications to mobile users automatically through server-side code based on an event. Does Firebase Notifications Service have an API that can be accessed over HTTP/S?</p>