public RestRequest PrepareEchoRequest()
        {
            var client = new RestClient
            {
                Authority   = "https://api.twitter.com",
                VersionPath = "1",
                UserAgent   = "TweetSharp"
            };

            var request = new RestRequest
            {
                Method      = WebMethod.Get,
                Path        = "account/verify_credentials.json",
                Credentials = OAuthCredentials.ForProtectedResource(
                    _consumerKey, _consumerSecret, _accessToken, _accessTokenSecret
                    )
            };

            return(OAuthCredentials.DelegateWith(client, request));
        }