private function getNotificationValue(Notification $notification)
{
if ($notification instanceof OnCompletedNotification) {
throw new \Exception("Unable to get value of OnCompletedNotification");
}
$value = null;
$valueGrabber = function ($v) use(&$value) {
$value = $v;
};
$notification->accept($valueGrabber, $valueGrabber);
return $value;
}
public function __construct($value)
{
parent::__construct('N', true);
$this->value = $value;
}
public function __construct(Exception $exception)
{
parent::__construct('E');
$this->exception = $exception;
}
public function __construct()
{
parent::__construct('C');
}