void OnAddItemClicked (object sender, EventArgs e)
		{
			var todoItem = new TodoItem ();
			var todoPage = new TodoItemPage ();
			todoPage.BindingContext = todoItem;
			Navigation.PushAsync (todoPage);
		}
 public Task DeleteTaskAsync(TodoItem item)
 {
     return(storage.DeleteTodoItemAsync(item));
 }
		public Task DeleteTaskAsync (TodoItem item)
		{
			return storage.DeleteTodoItemAsync (item);
		}
 public Task SaveTaskAsync(TodoItem item)
 {
     return(storage.SaveTodoItemAsync(item));
 }
		public Task SaveTaskAsync (TodoItem item)
		{
			return storage.SaveTodoItemAsync (item);
		}