Method constructor

demos/src/app/app.component.ts:67–70

(
    private eventBus: EventBusService,
    private dataService: DataService
  )

  customersChangedSub: Subscription = new Subscription();

  constructor(
    private eventBus: EventBusService,
    private dataService: DataService
  ) {}

  navItems: { link: string; name: string }[] = [
    { link: '/planning', name: 'Planning' },