return withCredentials(getDefaultCredentials());
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.CIFSContext#withGuestCrendentials()
     */
    @Override
    public CIFSContext withGuestCrendentials () {
        return withCredentials(new NtlmPasswordAuthenticator(null, null, null, AuthenticationType.GUEST));
    }


    /**
     * {@inheritDoc}
     *

    public CIFSContext withAnonymousCredentials () {
        return wrap(this.delegate.withAnonymousCredentials());
    }


    @Override
    public CIFSContext withGuestCrendentials () {
        return wrap(this.delegate.withGuestCrendentials());
    }


    @Override
    public boolean renewCredentials ( String locationHint, Throwable error ) {
        return this.delegate.renewCredentials(locationHint, error);

     */
    CIFSContext withAnonymousCredentials ();


    /**
     * 
     * @return a child context using guest credentials
     */
    CIFSContext withGuestCrendentials ();


    /**
     * 
     * @param creds
     * @return a child context using using the given credentials
     */
    CIFSContext withCredentials ( Credentials creds );


    /**

    }


    protected CIFSContext withTestGuestCredentials () {
        return getContext().withGuestCrendentials();
    }


    protected CIFSContext withAnonymousCredentials () {
        return getContext().withAnonymousCredentials();
    }


    protected String getTestDomain () {

        assertNotNull(this.context.getCredentials());
    }


    @Test
    @SuppressWarnings ( "deprecation" )
    public void testFixedCredentials () {
        Credentials guestCreds = this.context.withGuestCrendentials().getCredentials();
        assertThat(guestCreds, CoreMatchers.is(CoreMatchers.instanceOf(NtlmPasswordAuthenticator.class)));
        NtlmPasswordAuthenticator ntlmGuestCreds = guestCreds.unwrap(NtlmPasswordAuthenticator.class);

            @Override
            public String getGuestUsername () {
                return "jcifs-guest";
            }
        }).withGuestCrendentials();

        try ( SmbResource f = new SmbFile(getTestShareGuestURL(), ctx) ) {
            checkConnection(f);
        }
        catch ( SmbAuthException e ) {
            ignoreAuthFailure(e);
        }