# File lib/http/cookie.rb, line 671
  def yaml_initialize(tag, map)
    expires = nil
    @origin = nil
    map.each { |key, value|
      case key
      when 'expires'
        # avoid clobbering max_age
        expires = value
      when *PERSISTENT_PROPERTIES
        __send__("#{key}=""#{key}=", value)
      end
    }
    self.expires = expires if self.max_age.nil?
  end