# File lib/chef/knife/cookbook_site_download.rb, line 40
      def run
        if current_cookbook_deprecated?
          message = 'DEPRECATION: This cookbook has been deprecated. '
          message << "It has been replaced by #{replacement_cookbook}."
          ui.warn message

          unless config[:force]
            ui.warn 'Use --force to force download deprecated cookbook.'
            return
          end
        end

        download_cookbook
      end