FCM Web - Same foreground and background notification (reuse background notification in foreground)

I would like to know if it's possible to show the same notification when my website is in foreground, as when it is in background. I don't want to personalize the looks of the notification, I want to reuse it exactly how it is.

Right now, I'm handling the arrival of the notification using this function:

function messageReceived(payload) {
    // TODO implement actions on message received
    console.log(payload);
}

But I don't want to do it. Deleting this function doesn't help.

Thanks in advanced.