@frodsan but it's already marked as `private`: https://github.com/rails/rails/blob/3-2-stable/activesupport/lib/active_support/core_ext/class/attribute.rb#L111

Do you want me to remove https://github.com/rails/rails/blob/3-2-stable/activesupport/lib/active_support/core_ext/class/attribute.rb#L111 and add `private` as you've suggested?