'Access the available_phone_numbers
:returns: twilio.rest.api.v2010.account.available_phone_number.AvailablePhoneNumberCountryList
:rtype: twilio.rest.api.v2010.account.available_phone_number.AvailablePhoneNumberCountryList'

@property
def available_phone_numbers(self):

    if (self._available_phone_numbers is None):
        self._available_phone_numbers = AvailablePhoneNumberCountryList(self._version, account_sid=self._solution['sid'])
    return self._available_phone_numbers
