public async void RevokeAccessToken_ForInvalidCode_ReturnsFalse()
        {
            var uberClient = new UberAuthenticationClient(_clientId, _clientSecret);

            var response = await uberClient.RevokeAccessTokenAsync("...");

            Assert.False(response);
        }
        public async void RevokeAccessToken_ForValidCode_ReturnsTrue()
        {
            var uberClient = new UberAuthenticationClient(_clientId, _clientSecret);

            var response = await uberClient.RevokeAccessTokenAsync("...");

            response.ShouldBe(true);
        }