/// <summary>
        ///   read the file
        /// </summary>
        /// <param name="path">file path</param>
        /// <param name="firstExamples">First Example Type</param>
        /// <returns>success flag</returns>
        private bool AppendFile(string path,
                                FirstExampleType firstExamples)
        {
            if (!File.Exists(path))
            {
                File.Create(path).Dispose();
            }

            try
            {
                using (StreamWriter writer = new StreamWriter(path, true))
                {
                    writer.WriteLine(firstExamples.ToString());
                    return(true);
                }
            }
            catch (Exception ex)
            {
                Logger.Instance.WriteLog("ERROR: FirstExampleIOController: Failed to write (append) "
                                         + path
                                         + ": "
                                         + ex.ToString());
                return(false);
            }
        }