get_extension_args (OpenID::PAPE::Response)

    # File lib/openid/extensions/pape.rb, line 153
          def get_extension_args
            ns_args = {}
            if @auth_policies.empty?
              ns_args['auth_policies'] = 'none'
            else
              ns_args['auth_policies'] = @auth_policies.join(' ')
            end
            if @nist_auth_level
              unless (0..4).member? @nist_auth_level
                raise ArgumentError, "nist_auth_level must be an integer 0 through 4, not #{@nist_auth_level.inspect}"
              end
              ns_args['nist_auth_level'] = @nist_auth_level.to_s
            end

            if @auth_time
              unless @auth_time =~ TIME_VALIDATOR
                raise ArgumentError, "auth_time must be in RFC3339 format"
              end
              ns_args['auth_time'] = @auth_time
            end
            return ns_args
          end