not_set_required_variables

# File lib/rss/maker/0.9.rb, line 276
          def not_set_required_variables
            vars = super
            if @maker.feed_version == "0.91"
              vars << "title" unless title {|t| t.have_required_values?}
              vars << "link" unless link {|l| l.have_required_values?}
            end
            vars
          end