anchor.diff:  class _RunningExperimentsPageState extends State<RunningExperimentsPage> {
     var gAuth = GoogleAuth();
   
  -  List<Experiment> _experiments = [];
  -  var _experimentRetriever = ExperimentService();
  +  final _experimentRetriever = ExperimentService();
  +  var _experiments = <Experiment>[];
   
     @override
     void initState() {
  
positive.code:           IconButton(
              icon: Icon(Icons.search),
              tooltip: 'Find Experiments to Join',
              onPressed: () {
                Navigator.pushNamed(context, FindExperimentsPage.routeName);
              },
            ),
            IconButton(
              icon: Icon(Icons.refresh),
              tooltip: 'Update Experiments',
              onPressed: () {
                updateExperiments();
              },
            )
          ],
        ),
        body: Container(
          padding: EdgeInsets.all(8.0),
          //margin: EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 0.0),
          child: Column(
            children: <Widget>[
  //            buildWelcomeTextWidget(),
              Divider(
                height: 16.0,
                color: Colors.black,
  
negative.code:       builder: (BuildContext context) {
          return AlertDialog(
            title: Text('Stop Experiment'),
            content: const Text('Do you want to stop participating in this experiment?'),
            actions: <Widget>[
              FlatButton(
                child: const Text('No'),
                onPressed: () => Navigator.of(context).pop(ConfirmAction.CANCEL)
              ),
              FlatButton(
                child: const Text('Yes'),
                onPressed: () => Navigator.of(context).pop(ConfirmAction.ACCEPT)
              )
            ],
          );
  