private async void Edit_Clicked(object sender, EventArgs e)
        {
            var vm = new EditRadioStationViewModel(netRadioService, (sender as MenuItem).CommandParameter as NetRadio);

            vm.PageTitle = "Update existing radio";

            var modal = new AddOrEditStationPage(vm);

            await Navigation.PushModalAsync(modal);
        }
        private async void AddNew_Clicked(object sender, EventArgs e)
        {
            var vm = new AddRadioStationViewModel(netRadioService);

            vm.PageTitle = "Add new radio station";

            var modal = new AddOrEditStationPage(vm);

            await Navigation.PushModalAsync(modal);
        }