facebook_session has no method graphCall

I'm using the DracoBlue node-facebook-client and passport.js to authenticate a user into my app, then check if they are a member of a specific group.

I retrieve the users profile and access token then using the facebook_client try to get a session with the access token.

I'm not sure if the session being created properly because when I try using the method graphCall it throws the following error:

"500 TypeError: Object function (cb) { var session = new FacebookSession(self, access_token); cb(session); } has no method 'graphCall'"

A further source of information is found here.

Although not a php question. This is a node.js port of the php facebook client api so someone who uses that may have had the same problem.

Any help is greatly appreciated.

Thanks.

/* get the facebook client using ID and secret */
var facebook_client = new FacebookClient(
    clientID, // configure like your fb app page states
    clientSecret, // configure like your fb app page states
    {
        "timeout": 10000 // modify the global timeout for facebook calls (Default: 10000)
    }
);

/*
 * Define the facebook stragety
 */
passport.use(new FacebookStrategy({
    clientID: clientID,
    clientSecret: clientSecret,
    callbackURL: "http://localhost:3000/auth/facebook/callback",
    scope: 'user_groups'      //Ask user to access their groups. Used for finding whether user is member of group
  },
  function(accessToken, refreshToken, profile, done) {
    console.log('accessToken: ' + accessToken);
    console.log('facebook_client: ' + facebook_client);
    var facebook_session = facebook_client.getSessionByAccessToken(accessToken);
    console.log('facebook_session: ' + facebook_session);
    facebook_session.graphCall('/me?fields=groups')(function(result){
      if(!result.error)
      {
        console.log(groups.data);
      }
      else
      {
        console.log('Error: ' + result.error.message);
        console.log('nane: ' + result.data); 
      }
    });

    console.log('profile.groups ' + profile.user_groups);
    console.log('accessToken ' + accessToken);
    console.log('refreshToken ' + refreshToken);
    done(null, profile);
  }
));