Unity Multiplayer Matchmaker state

Hey.

I'm trying to do a little game and I'm trying to do it with Unity 5.1.

So my first goal is to create a Start Menu with a list of servers available, the possibility of creating / joining a game, etc.

When I start my scene, my manager call NetworkManager.singleton.StartMatchMaker().
The thing is, I didn't find on the Unity's documentation or in the sample projects a way to know when we have reach (or not) the MatchMaker, if it is still alive etc.

I found several events like OnStartServer(), OnStartClient(), OnStartHost().. but no OnMatchMakerStart().

Code (CSharp):

1.         void Start() {
2.             NetworkManager.singleton.StartMatchMaker();
3.             NetworkManager.singleton.matchMaker.ListMatches(0, 20, "", OnMatchList);
4.         }
5.  

This works.. but If the MatchMaker crashes, I have no events to tell me "Hey dude, I'm not here anymore, bye bye". The only thing I noticed is that the NetworkManager.singleton.matchMaker is null when we're not connected.. I'd like to be informed about that. I could do that in a Update function : checking if the matchMaker is null or not.. but it's really ugly

Thank you !