code: public SmbFile[] listFiles( String wildcard ) throws SmbException {
          return listFiles( wildcard, ATTR_DIRECTORY | ATTR_HIDDEN | ATTR_SYSTEM, null, null );
      }
docs: The CIFS protocol provides for DOS "wildcards" to be used as
  a performance enhancement. The client does not have to filter
  the names and the server does not have to return all directory
  entries.
  <p>
  The wildcard expression may consist of two special meta
  characters in addition to the normal filename characters. The '*'
  character matches any number of characters in part of a name. If
  the expression begins with one or more '?'s then exactly that
  many characters will be matched whereas if it ends with '?'s
  it will match that many characters <i>or less</i>.
  <p>
  Wildcard expressions will not filter workgroup names or server names.
  
  <blockquote><pre>
  winnt> ls c?o*
  clock.avi                  -rw--      82944 Mon Oct 14 1996 1:38 AM
  Cookies                    drw--          0 Fri Nov 13 1998 9:42 PM
  2 items in 5ms
  </pre></blockquote>
  
  @param wildcard a wildcard expression
  @throws SmbException
  @return An array of <code>SmbFile</code> objects representing file
  and directories, workgroups, servers, or shares depending on the context
  of the resource URL