상속: BaseModel
        public bool Update(TaskCategory category)
        {
            var request = new RestRequest(String.Format("task_categories/{0}.xml", category.Id), Method.PUT) { XmlSerializer = new XmlIgnoreSerializer() };
            request.AddBody(category);

            var response = _client.Execute<TaskCategory>(request);
            return response.StatusCode == HttpStatusCode.OK;
        }
        public TaskCategory Create(TaskCategory category)
        {
            var request = new RestRequest("task_categories.xml", Method.POST) { XmlSerializer = new XmlIgnoreSerializer() };
            request.AddBody(category);

            var response = _client.Execute<TaskCategory>(request);
            return response.Data;
        }