code: func (os *OpenStack) GetDevicePath(volumeID string) string {
  	devicePath := os.GetDevicePathBySerialID(volumeID)
  
  	if devicePath == "" {
  		devicePath = os.getDevicePathFromInstanceMetadata(volumeID)
  	}
  
  	if devicePath == "" {
  		klog.Warningf("Failed to find device for the volumeID: %q", volumeID)
  	}
  
  	return devicePath
  }
docs: // GetDevicePath returns the path of an attached block storage volume, specified by its id.