/// <summary>
        /// serialization class for checking update
        /// </summary>
        /// <returns></returns>
        protected string CheckingUpdate()
        {
            CheckUpdateInfo checkUpdateInfo = new CheckUpdateInfo
            {
                version = currentVersion
            };

            return(JsonConvert.SerializeObject(checkUpdateInfo));
        }
        /// <summary>
        /// serialization class for checking update
        /// </summary>
        /// <returns></returns>
        protected string CheckingUpdate()
        {
            CheckUpdateInfo checkUpdateInfo = new CheckUpdateInfo
            {
                version = AzureRestClient.version
            };

            return(JsonConvert.SerializeObject(checkUpdateInfo));
        }