title: Update pending notifications in iOS 10
body: <p>I have this function below:</p>
  
  <pre><code>@objc func decrementBadges(){
      let center = UNUserNotificationCenter.current()
  
      center.getPendingNotificationRequests(completionHandler: { (notifications) in
          print("count", notifications.count)
          for notification in notifications{
              //center.removePendingNotificationRequests(withIdentifiers: notification.title)
              print(notification.content.badge)
              print(notification.description)
          }
      })
  }
  </code></pre>
  
  <p>I am trying to decrement the badge numbers on all the pending notifications. Is this possible? The notification.content.badge is read only and I can't figure out a way to set it.</p>