private RestResponse GetRestReponse() { Dictionary <string, string> httpHeader = new Dictionary <string, string>(); httpHeader.Add("X-Yandex-API-Key", AccessToken); httpHeader.Add("Accept", "application/json"); RestResponse restResponse = HttpClientAsyncHelper.PerformGetRequest(Uri, httpHeader).GetAwaiter().GetResult(); Assert.AreEqual(200, restResponse.StatusCode); return(restResponse); }