* <code>null</code> is returned.
     * 
     * @return URL to the DFS volume
     * @throws SmbException
     */
    public String getDfsPath () throws SmbException {
        try {
            String path = this.treeConnection.ensureDFSResolved(this.fileLocator).getDfsPath();
            if ( path != null && isDirectory() ) {
                path += '/';
            }
            return path;
        }