/**
  * Indicates wether the birthday date has to be entered.
  *
  * @return boolean
  *
  * @author Sascha Koehler <*****@*****.**>
  * @since 12.10.2011
  */
 public function demandBirthdayDate()
 {
     return SilvercartConfig::demandBirthdayDateOnRegistration();
 }
 /**
  * Indicates wether the birthday date should be demanded on registration.
  *
  * @return boolean
  *
  * @author Sascha Koehler <*****@*****.**>
  * @since 12.10.2011
  */
 public static function DemandBirthdayDateOnRegistration()
 {
     if (is_null(self::$demandBirthdayDateOnRegistration)) {
         self::$demandBirthdayDateOnRegistration = self::getConfig()->demandBirthdayDateOnRegistration;
     }
     return self::$demandBirthdayDateOnRegistration;
 }