NLog.FileWriter.WriteLine C# (CSharp) Method

        public void WriteLine(string message)
        {
            lock (_lock) {
                using (StreamWriter writer = new StreamWriter(_filePath, true)) {
                    writer.WriteLine(message);
                }
            }
        }

 static void fileWriterTest()
 {
     var fileWriter = new FileWriter("Log.txt");
     fileWriter.ClearFile();
     var formatter = new DefaultLogMessageFormatter();
     LoggerFactory.AddAppender((logger, logLevel, message) => {
         var logMessage = formatter.FormatMessage(logger, logLevel, message);
         fileWriter.WriteLine(logMessage);
     });
 }