# File lib/chef/provider/file.rb, line 112
      def set_group
        unless compare_group
          @set_group_id = negative_complement(@set_group_id)
          ::File.chown(nil, @set_group_id, @new_resource.path)
          Chef::Log.info("#{@new_resource} group changed to #{@set_group_id}")
          @new_resource.updated_by_last_action(true)
        end
      end