# File lib/openid/extensions/ax.rb, line 448
      def self.from_success_response(success_response, signed=true)
        if signed
          ax_args = success_response.get_signed_ns(@ns_uri)
        else
          ax_args = success_response.message.get_args(@ns_uri)
        end
        new.parse_extension_args(ax_args)
      end