* <code>disk</code>, or <code>redirect</code>. This method is
* implemented by the subclasses {@link DirectFileEntry},
* {@link DiskFileEntry}, and {@link RedirectFileEntry}, respectively.
* <code>disk</code>, or <code>redirect</code>. This method is
* implemented by the subclasses {@link DirectFileEntry},
* {@link DiskFileEntry}, and {@link RedirectFileEntry}, respectively.