/**
* Get the form requirements
* @return {RequiredFields}
*/
public function getFormRequirements()
{
$required = parent::getFormRequirements();
$required->appendRequiredFields(new RequiredFields('BillingAddress', 'BillingCity', 'BillingState', 'BillingZIPCode', 'BillingCountry'));
return $required;
}
