public async Task<string> Download(string url, CancellationTokenSource token = null)
        {
            _currentToken = token ?? new CancellationTokenSource();

            var handler = _httpClientFactory.GetHandler();
            var outerHandler = new RetryHandler(handler, 3);
            var client = _httpClientFactory.Get(outerHandler);
            var msg = await client.GetAsync(url, _currentToken.Token);

            if (!msg.IsSuccessStatusCode) return "Something derped";

            var result = await msg.Content.ReadAsStringAsync();
            return result;
        }
        public async Task<IEnumerable<IdentityProviderInformation>> GetIdentityProviderListAsync(Uri identityProviderListServiceEndpoint)
        {
            var clientFactory = Mvx.Resolve<IHttpClientFactory>();
            var handler = clientFactory.GetHandler();
            var outerHandler = new RetryHandler(handler);
            var client = clientFactory.Get(outerHandler);
            var json = await client.GetStringAsync(identityProviderListServiceEndpoint);
            var identityProviders = JsonConvert.DeserializeObject<IEnumerable<IdentityProviderInformation>>(json);

            var windowsLiveId = identityProviders.FirstOrDefault(i => i.Name.Equals("Windows Live™ ID", StringComparison.OrdinalIgnoreCase));
            if (windowsLiveId != null)
            {
                var separator = windowsLiveId.LoginUrl.Contains("?") ? "&" : "?";
                windowsLiveId.LoginUrl = string.Format(CultureInfo.InvariantCulture, "{0}{1}pcexp=false", windowsLiveId.LoginUrl, separator);
            }

            return identityProviders;
        }