public PageRendererTestPageViewModel(INavigationService navigationService, CoreModel coreModel) : base(navigationService)
{
KeyHistory = coreModel.ObserveProperty(x => x.KeyHistory).ToReadOnlyReactiveProperty();
KeyDownCommand = new ReactiveCommand <string>().WithSubscribe(x => coreModel.SetKeyHistory(x));
MethodHistory = coreModel.ObserveProperty(x => x.MethodHistory).ToReadOnlyReactiveProperty();
CommandA.Subscribe(_ => coreModel.MethodA());
CommandB.Subscribe(_ => coreModel.MethodB());
CommandC.Subscribe(_ => coreModel.MethodC());
}