/**
  * @param string $subscriberRef
  * @param string $reference
  * @param string $amount
  * @param string $bearer
  * @param string $validityDate
  */
 public function __construct($subscriberRef, $reference, $amount, $bearer, $validityDate)
 {
     parent::__construct($reference, $amount, $bearer, $validityDate, $subscriberRef);
 }
 /**
  * @param string $subscriberRef
  * @param string $reference
  * @param int    $amount
  * @param string $bearer
  * @param string $validityDate
  * @param int    $transactionNumber
  * @param int    $callNumber
  */
 public function __construct($subscriberRef, $reference, $amount, $bearer, $validityDate, $transactionNumber, $callNumber)
 {
     parent::__construct($reference, $amount, $bearer, $validityDate, $subscriberRef);
     $this->transactionNumber = $transactionNumber;
     $this->callNumber = $callNumber;
 }