static string createDocument(string authToken, string type, string parent_id, string name, string description, string file)
    {
            var client = new RestClient("http://localhost/otcs/cs.exe/");
      var request = new RestRequest("api/v1/nodes", Method.POST);
      request.AddHeader("OTCSTICKET", authToken);
       
      request.AddParameter("type", type);
      request.AddParameter("parent_id", parent_id);
      request.AddParameter("name", name);
      request.AddParameter("description", description);
      request.AddFile("file", file);
       
      var content = JObject.Parse(client.Execute(request).Content);
      return content["id"].ToString();
    }