code: func (c *Cloud) GetDiskPath(volumeName KubernetesVolumeID) (string, error) {
  	awsDisk, err := newAWSDisk(c, volumeName)
  	if err != nil {
  		return "", err
  	}
  	info, err := awsDisk.describeVolume()
  	if err != nil {
  		return "", err
  	}
  	if len(info.Attachments) == 0 {
  		return "", fmt.Errorf("No attachment to volume %s", volumeName)
  	}
  	return aws.StringValue(info.Attachments[0].Device), nil
  }
docs: // GetDiskPath implements Volumes.GetDiskPath