parse_extension_args (OpenID::PAPE::Request)

    # File lib/openid/extensions/pape.rb, line 61
          def parse_extension_args(args)
            @preferred_auth_policies = []
            policies_str = args['preferred_auth_policies']
            if policies_str
              policies_str.split(' ').each{|uri|
                add_policy_uri(uri)
              }
            end

            max_auth_age_str = args['max_auth_age']
            if max_auth_age_str
              @max_auth_age = max_auth_age_str.to_i
            else
              @max_auth_age = nil
            end
          end