to_feed

# File lib/rss/maker/feed.rb, line 237
              def to_feed(feed, current)
                source = current.class::Source.new
                setup_values(source)
                current.source = source
                set_parent(source, current)
                setup_other_elements(feed, source)
                current.source = nil if source.to_s == "<source/>"
              end