# File lib/openid/server.rb, line 931
      def encode_to_kvform
        # Encode a response in key-value colon/newline format.
        #
        # This is a machine-readable format used to respond to
        # messages which came directly from the consumer and not
        # through the user agent.
        #
        # see: OpenID Specs,
        #    <a href="http://openid.net/specs.bml#keyvalue">Key-Value Colon/Newline format</a>
        return @fields.to_kvform
      end