public static void Start()
        {
            AbstractLogger loggerChain = GetChainOfLoggers();

            loggerChain.LogMessage(AbstractLogger.INFO,
                                   "This is an information.");

            loggerChain.LogMessage(AbstractLogger.DEBUG,
                                   "This is an debug level information.");

            loggerChain.LogMessage(AbstractLogger.ERROR,
                                   "This is an error information.");
        }
 public void LogMessage(int level, String message)
 {
     if (this.level <= level)
     {
         Write(message);
     }
     if (nextLogger != null)
     {
         nextLogger.LogMessage(level, message);
     }
 }