Get the muc users with the affiliation owner using the strophe js muc plugin

Question

Hello I'm using the muc plugin and trying to get the muc user with the affiliation of 'owner'. i have tried doing this using the onRoster call back which is added when joining a muc.

$scope.XMPPConnection.muc.join(room, $scope.facebookId, onMessage, onPresence, onRoster, '', {maxstanzas : 0} );


    function onRoster(roster) {
        if($scope.justConnected)
        {
            $scope.owner = getOwner(roster);
            getTrackList();
            $scope.justConnected = false;
        }
    }




function getOwner(data)
    {
        console.log(data);
        console.log("getting the owner");

        for (var p in data) {
             console.log(p + "are you the owner? ")
             if( data[p].affiliation === 'owner') {
                 return ( p + '@xmpp.url.com' );
              }
         }

       console.log("finishing the owner");
    }

When printing the roster data to the console I get all of it but I only get one with a message saying that it is a snapshot. When expanded it has all the occupants.

Object {422733867925336: Occupant}

Am I going about this the right way. It seems like the object isn't fully populated when I try to get the owner and is missing so occupants. Why is this?