Flag for use with PendingIntent.GetActivity(Android.Content.Context, System.Int32, System.Int32, System.Int32), PendingIntent.GetBroadcast(Android.Content.Context, System.Int32, System.Int32, System.Int32), and PendingIntent.GetService(Android.Content.Context, System.Int32, System.Int32, System.Int32): if the described PendingIntent already exists, then keep it but its replace its extra data with what is in this new Intent. This can be used if you are creating intents where only the extras change, and don't care that any entities that received your previous PendingIntent will be able to launch it with your new extras even if they are not explicitly given to it.