public async void ThrowExceptionDueToInvalidApiKey()
        {
            const string invalidApiKey = "This shouldn't work";
            var          w3w           = new What3Words(invalidApiKey);

            Should.Throw <UnauthorizedAccessException>(async() => await w3w.ConvertTo3wa(42.998737, -81.254357))
            .Message.ShouldBe("The API key is invalid");
        }
        public async void ReturnCorrectReverseGeocodeResponse()
        {
            var w3w = new What3Words(ApiKey);

            var result = await w3w.ConvertTo3wa(42.998747, -81.254366);

            result.ToString().ShouldBe("offshore.bitters.voltage");
            result.Map.ShouldBe("https://w3w.co/offshore.bitters.voltage");
            result.NearestPlace.ShouldBe("London, Ontario");
            result.Country.ShouldBe("CA");
            result.Coordinates.Lat.ShouldBe(42.998747);
            result.Coordinates.Lng.ShouldBe(-81.254366);
        }