/**
 * Create a new file but fail if it already exists. The check for
 * existance of the file and it's creation are an atomic operation with
 * respect to other filesystem activities.
 */
    public void createNewFile() throws SmbException {
        if( getUncPath0().length() == 1 ) {
            throw new SmbException( "Invalid operation for workgroups, servers, or shares" );
        }