* the root URL <code>smb://</code> is also <code>smb://</code>. If this
     * <tt>SmbFile</tt> refers to a workgroup, server, share, or directory,
     * the name will include a trailing slash '/' so that composing new
     * <tt>SmbFile</tt>s will maintain the trailing slash requirement.
     *
     * @return The last component of the URL associated with this SMB
     *         resource or <code>smb://</code> if the resource is <code>smb://</code>