```ruby
class Exception
  def initialize(message)
    @message = message
  end

  def to_s
    "#{@message}, dude."
  end
end
```

Refactor based on skmetz example onPR 4
user
```ruby
class Exception
  attr_reader :initial_message

  def initialize(message)
    @initial_message = message
  end

  def to_s
    "#{@initial_message}, dude."
  end
end
```
assistant