title: In flutter how to clear notification in bar?
body: <p>I am learning Google cloud messaging and <a href="https://pub.dev/packages/firebase_messaging" rel="noreferrer">firebase messaging</a> is working fine, but when a user do not click at the notification to open the app and instead goes directly to app by manually opening it and bringing to foreground, the notification stays. I want those notification message related to my app go away when the app comes to foreground. How can I achieve this  ?</p>