code: def fetch(self, country_code=values.unset, type=values.unset,
                add_ons=values.unset, add_ons_data=values.unset):
          
          return self._proxy.fetch(
              country_code=country_code,
              type=type,
              add_ons=add_ons,
              add_ons_data=add_ons_data,
          )
docs: Fetch a PhoneNumberInstance
  
          :param unicode country_code: The ISO country code of the phone number
          :param unicode type: The type of information to return
          :param unicode add_ons: The unique_name of an Add-on you would like to invoke
          :param dict add_ons_data: Data specific to the add-on you would like to invoke
  
          :returns: Fetched PhoneNumberInstance
          :rtype: twilio.rest.lookups.v1.phone_number.PhoneNumberInstance