def fax(self):
        """
        Access the Fax Twilio Domain

        :returns: Fax Twilio Domain
        :rtype: twilio.rest.fax.Fax
        """
        if self._fax is None:
            from twilio.rest.fax import Fax
            self._fax = Fax(self)
        return self._fax
Access the Fax Twilio Domain

        :returns: Fax Twilio Domain
        :rtype: twilio.rest.fax.Fax