have_required_elements?

# File lib/rss/rss.rb, line 951
    def have_required_elements?
      self.class::MODELS.all? do |tag, uri, occurs, getter|
        if occurs.nil? or occurs == "+"
          child = __send__(getter)
          if child.is_a?(Array)
            children = child
            children.any? {|c| c.have_required_elements?}
          else
            not child.nil?
          end
        else
          true
        end
      end
    end