StdOutSerializableLogAction(String message) {
        super(message)
    }

    void execute() {
        System.out.println(message)
    }
}

class StdErrSerializableLogAction extends SerializableLogAction {
    StdErrSerializableLogAction(String message) {
        super(message)
    }

    void execute() {
        System.err.println(message)
    }
}