public void TokenizeRequest(User user)
 {
     var token = GetToken(user);
     Request.AddHeader("Accept", "application/json");
     Request.AddHeader("Content-Type", "application/json");
     Request.AddHeader("Authorization", string.Format("Bearer {0}", token));
 }
        private string GetToken(User user)
        {
            //_restRequest.AddParameter("Accept", "application/json");
            string encodedBody = string.Format("grant_type={0}&username={1}&password={2}", "password", "SuperUser", "P@ssword123");
            _restRequest.AddParameter("application/x-www-form-urlencoded", encodedBody, ParameterType.RequestBody);
            _restRequest.AddParameter("Content-Type", "application/x-www-form-urlencoded", ParameterType.HttpHeader);

            var jsonDeserializer = new JsonDeserializer();
            var response = Client.Execute<User>(_restRequest);
            var userResponse = jsonDeserializer.Deserialize<User>(response);
            return userResponse.access_token;
        }