WCF Web API: Extension methods for requesting a response in JSON, and for setting Basic auth headers

gistfile1.cs

    public static class HttpClientExtensionMethods
    {
        public static void SetBasicAuth(this HttpClient httpClient, string userName, string password)
        {
            var byteArray = Encoding.ASCII.GetBytes(userName + ":" + password);
            httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));
        }

        public static void AcceptJson(this HttpClient httpClient)
        {
            var jsonMediaType = new MediaTypeWithQualityHeaderValue("application/json");
            httpClient.DefaultRequestHeaders.Accept
                  .Add(jsonMediaType);
        }
    }