# File lib/open-uri/cached.rb, line 7
    def open_uri(uri, *rest, &block)
      response = Cache.get(uri.to_s) ||
                 Cache.set(uri.to_s, original_open_uri(uri, *rest))

      if block_given?
        begin
          yield response
        ensure
          response.close
        end
      else
        response
      end
    end