afterEach(function () {
   StubCollections.restore();
   Template.deregisterHelper('_');
   Meteor.subscribe.restore();
 });
 afterEach(() => {
   StubCollections.restore();
   Template.deregisterHelper('_');
   FlowRouter.getParam.restore();
   Meteor.subscribe.restore();
 });
 Tracker.nonreactive(function () {
   handler = Meteor.subscribe.apply(Meteor, args);
 })