/**
  * Returns the SkipPaymentStepIfUnique property
  * 
  * @return bool
  * 
  * @author Sebastian Diel <*****@*****.**>
  * @since 11.03.2013
  */
 public static function SkipPaymentStepIfUnique()
 {
     if (is_null(self::$skipPaymentStepIfUnique)) {
         self::$skipPaymentStepIfUnique = self::getConfig()->SkipPaymentStepIfUnique;
     }
     return self::$skipPaymentStepIfUnique;
 }