/**
* @param string $code
*
* @return null | DeliveryStatus
*/
protected function getStateFromCode($code)
{
switch ($code) {
case 'D':
case 'D1':
case 'D2':
case 'RG':
case 'DD':
case 'B':
case 'U':
case 'VC':
case 'RI':
case 'RR':
$state = DeliveryStatus::stateDelivered();
break;
default:
$state = DeliveryStatus::stateInProgress();
break;
}
return $state;
}
