'Access the toll_free
:returns: twilio.rest.api.v2010.account.available_phone_number.toll_free.TollFreeList
:rtype: twilio.rest.api.v2010.account.available_phone_number.toll_free.TollFreeList'

@property
def toll_free(self):

    if (self._toll_free is None):
        self._toll_free = TollFreeList(self._version, account_sid=self._solution['account_sid'], country_code=self._solution['country_code'])
    return self._toll_free
