/**
  * the singleton pattern
  *
  * @return SoEventManager_Controller_SoEvent
  */
 public static function getInstance()
 {
     if (self::$_instance === NULL) {
         self::$_instance = new self();
     }
     return self::$_instance;
 }
Example #2
0
 public function printReturnInquiry()
 {
     Billing_Controller_PrintDebitReturnInquiry::getInstance()->printDocs();
 }