/**
  * Constuctor: init extension
  */
 public function __construct()
 {
     $this->driverLocator = DriverLocator::getInstance(self::DRIVER_NAMESPACE, self::DRIVER_PARENT);
     $this->driverNodeBuilder = DriverNodeBuilder::getInstance(self::DRIVER_NAMESPACE, self::DRIVER_PARENT);
 }
 /**
  * Constuctor: init extension
  */
 public function __construct()
 {
     $this->driverNodeBuilder = DriverNodeBuilder::getInstance(Config::IMAGE_DRIVER_NAMESPACE, Config::IMAGE_DRIVER_PARENT);
 }