*
 * <h3>Cancelling</h3>
 *
 * Any step in a pipeline can be {@linkplain #cancel(boolean) cancelled}, even after another step
 * has been derived, with the same semantics as cancelling a {@link Future}. In addition, a
 * successfully cancelled step will immediately start closing all objects captured for later closing
 * by it and by its input steps.
 *
 * <h3>Ending a pipeline</h3>
 *

 *
 * <blockquote><pre>
 *     smb1://storage15/public/foo.txt
 * </pre></blockquote>
 *
 * would reference the file <code>foo.txt</code> in the share
 * <code>public</code> on the server <code>storage15</code>. In addition
 * to referencing files and directories, jCIFS can also address servers,
 * and workgroups.
 * <p>
 * <font color="#800000"><i>Important: all SMB URLs that represent