public CitiesViewModel()
{
Title = "Cities";
Cities = new ObservableCollection <City>();
//CARREGA DOS ITEMS PARA A LISTA
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <SearchView, Item>(this, "AddItem", async(obj, item) =>
{
var _city = item as Item;
//Cities.Add(_city);
await DataStore.AddCityAsync(_city);
});
}