public MapView(RestaurantViewModel restaurant)
        {
            MapViewModel map       = MapService.getMapRestaurant(RestaurantViewModel.GetRestaurant(restaurant));
            var          requesMap = new Map(
                MapSpan.FromCenterAndRadius(
                    new Position(map.lat, map.lng), Distance.FromMiles(0.3)))
            {
                HeightRequest   = 100,
                WidthRequest    = 960,
                VerticalOptions = LayoutOptions.FillAndExpand
            };
            var stack = new StackLayout {
                Spacing = 0
            };

            requesMap.Pins.Add(new Pin
            {
                Type     = PinType.Generic,
                Position = new Position(map.lat, map.lng),
                Label    = restaurant.NameRestaurant,
                Address  = restaurant.AddressRestaurant
            });
            stack.Children.Add(requesMap);
            Content = stack;
        }