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	cfg := zap.Config{
		Encoding:         "json",
		Level:            zap.NewAtomicLevelAt(zapcore.DebugLevel),
		OutputPaths:      []string{"stderr"},
		ErrorOutputPaths: []string{"stderr"},
		EncoderConfig: zapcore.EncoderConfig{
			MessageKey: "message",

			LevelKey:    "level",
			EncodeLevel: zapcore.CapitalLevelEncoder,

			TimeKey:    "time",
			EncodeTime: zapcore.ISO8601TimeEncoder,

			CallerKey:    "caller",
			EncodeCaller: zapcore.ShortCallerEncoder,
		},
	}
	logger, _ = cfg.Build()
        childlogger := logger.With(zap.String("logger", "child generation 1"))

	logger.Debug("This is a DEBUG message")
	logger.Info("This is an INFO message")
	logger.Info("This is an INFO message with fields", zap.String("region", "us-west"), zap.Int("id", 2))
       // ****** Child logger also has the same logging level settings ****
       childlogger.Debug("This is a DEBUG message from child logger") 
       childlogger.Info("This is an INFO message from child logger") 

	fmt.Printf("\n*** Same logger with console logging enabled instead with Info level now\n\n")

	logger.WithOptions(
		zap.WrapCore(
			func(zapcore.Core) zapcore.Core {
				return zapcore.NewCore(zapcore.NewConsoleEncoder(cfg.EncoderConfig), zapcore.AddSync(os.Stderr), zapcore.InfoLevel)
			})).Debug("This is a DEBUG message, but should not be printed")

     // ****** new settings no longer honored after this line ****
    logger.Debug("This is a DEBUG message, but should not be printed") 

    childlogger.Debug("This is a DEBUG message from child logger") 
    childlogger.Info("This is an INFO message from child logger")