# File lib/paperclip.rb, line 142
    def each_instance_with_attachment(klass, name)
      unscope_method = class_for(klass).respond_to?(:unscoped) ? :unscoped : :with_exclusive_scope
      class_for(klass).send(unscope_method) do
        class_for(klass).find(:all, :order => 'id').each do |instance|
          yield(instance) if instance.send("#{name}?""#{name}?")
        end
      end
    end