code: def find
        request_uris.map do |request|
          if request[:body].nil?
            request[:uri]
          else
            html = Nokogiri::HTML(request[:body])
            potential_feed_uris = html.xpath(XPATHS.detect { |path| !html.xpath(path).empty? })
            if potential_feed_uris.empty?
              Mako.errors.add_error "Could not find feed for #{request[:uri]}"
              next
            end
            uri_string = potential_feed_uris.first.value
            feed_uri = URI.parse(uri_string)
            feed_uri.absolutize!(request[:uri])
          end
        end.compact
      end
docs: From an array of supplied URIs, will request each one and attempt to
   find a feed URI on the page.  If one is found, it will be added to
   an array and returned.
  
   @return [Array]