public function config($params)
 {
     Midtrans::$serverKey = $params['server_key'];
     Midtrans::$isProduction = $params['production'];
 }
 public function __construct()
 {
     Midtrans::$serverKey = 'VT-server-UJ4uPuXhwiNXwhpQx5-S76U1';
     Midtrans::$isProduction = false;
 }