/**
* Gets a list of all phone numbers available for the given CartAddress object
*
* @param CartAddress $object
*
* @return array of [phone number, phone owner]
*/
public function getPhoneNumbers($object)
{
$result = [];
$phone = $object->getPhone();
if (!empty($phone)) {
$result[] = [$phone, $object];
}
return $result;
}
