public function processInput(array $postData)
 {
     if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         Kwf_Util_PayPal_Ipn::process();
     }
     exit;
 }
 public function processInput(array $postData)
 {
     Kwf_Util_PayPal_Ipn::process();
     exit;
 }