public CoffeeDetailPage(CoffeeDetailViewModel viewModel)
        {
            InitializeComponent();

            BindingContext = _viewModel = viewModel;

            UpdateLabelProperties();
        }
        public CoffeeDetailPage()
        {
            InitializeComponent();

            var item = new Coffee
            {
                Text        = "Item 1",
                Description = "This is an item description."
            };

            _viewModel     = new CoffeeDetailViewModel(item);
            BindingContext = _viewModel;
        }