code: function(name) {
      var cookie = this.cookies[name]
      if (cookie && this.checkNotExpired(name)) {
        return this.cookies[name].value
      }
      return null
    }
docs: Obtains value of the cookie with specified name.
  This call checks expiration dates and does not return expired cookies.
  @param {String} name cookie name
  @return {String} cookie value or null