not_set_required_variables

# File lib/rss/maker/entry.rb, line 92
            def not_set_required_variables
              set_default_values do
                vars = super
                if authors.all? {|author| !author.have_required_values?}
                  vars << "author"
                end
                vars << "title" unless title {|t| t.have_required_values?}
                vars
              end
            end