on-message-received-java

...
public void onMessageReceived(RemoteMessage remoteMessage) {

        Intent intent = new Intent(this, ActivityQuePodeIniciarAberturaDeLink.class);
        intent.putExtra( "URL", remoteMessage.getData().get("link") );

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
            // .setSmallIcon( R.drawable.qualquer_icone )
            .setTicker( "Abrir URL" )
            .setContentTitle( "Abrir URL" )
            .setContentText( "Abrir URL no YouTube" )
            // .setLargeIcon( bitmapQualquer )
            .setContentIntent( pendingIntent );

        NotificationManager notifyManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        notifyManager.notify( 0, builder.build() );
    }
...