/**
  * singleton pattern
  * 
  * @param boolean $verboseFlagFromSoapDaemon
  * 
  * @return PlentySoapDaemonActionCollector
  */
 public static function getInstance($verboseFlagFromSoapDaemon)
 {
     if (!isset(self::$instance) || !self::$instance instanceof PlentySoapDaemonActionCollector) {
         self::$instance = new PlentySoapDaemonActionCollector($verboseFlagFromSoapDaemon);
     }
     return self::$instance;
 }