private String url;
    private SmbAuthException sae;

    private void reset() {
        url = null;
        sae = null;
    }

/**
Set the default <tt>NtlmAuthenticator</tt>. Once the default authenticator is set it cannot be changed. Calling this metho again will have no effect.
 */

    public synchronized static void setDefault( NtlmAuthenticator a ) {
        if( auth != null ) {
            return;
        }

    private static NtlmAuthenticator auth;

    private String url;
    private SmbAuthException sae;


    /**
     * Set the default <tt>NtlmAuthenticator</tt>. Once the default authenticator is set it cannot be changed. Calling
     * this metho again will have no effect.
     * 
     * @param a
     */

    public synchronized static void setDefault ( NtlmAuthenticator a ) {