ApiCore.Questions.QuestionsFactory.GetTypes C# (CSharp) Method

        public List<QuestionType> GetTypes()
        {
            this.Manager.Method("questions.getTypes");
            string resp = this.Manager.Execute().GetResponseString();
            if (this.Manager.MethodSuccessed)
            {
                XmlDocument x = this.Manager.GetXmlDocument(resp);
                if (x.SelectSingleNode("/response").InnerText.Equals("0"))
                {
                    return null;
                }
                return this.buildQuestionTypeList(x);
            }
            return null;
        }