def sync(self):
        """
        Access the Sync Twilio Domain

        :returns: Sync Twilio Domain
        :rtype: twilio.rest.sync.Sync
        """
        if self._sync is None:
            from twilio.rest.sync import Sync
            self._sync = Sync(self)
        return self._sync
Access the Sync Twilio Domain

        :returns: Sync Twilio Domain
        :rtype: twilio.rest.sync.Sync