public MainPageViewModel(IApplicationModel applicationModel)
{
_applicationModel = applicationModel;
//ReactiveBinder.Bind(() => _applicationModel.Title, () => Title);
//ReactiveBinder.Bind(_applicationModel.ObserveProperty(x => x.Title), () => Title);
_applicationModel
.ObserveProperty(x => x.Title)
.Select(x => x + " append.")
.Bind(() => Title);
}
