boolean renewed = wrapper.renewCredentials("locationHint", null);

        // Verify that renew() was called and credentials were updated
        assertTrue(renewed, "renewCredentials should return true when renewable credentials are renewed");
        assertEquals(mockRenewedCredentialsInternal, wrapper.getCredentials(), "Credentials should be updated to renewed credentials");
        verify(mockRenewableCredentials).renew();
    }

            assertTrue(renewed instanceof SmbRenewableCredentials, "renewed credentials should still be SmbRenewableCredentials");
        } else {
            assertNull(renewed, "renew() may return null for failed renewal");
        }
    }

    @Test
    @DisplayName("Mockito: verify renew() interaction and return value")

        final Credentials cred = getCredentials();
        if (cred instanceof final SmbRenewableCredentials renewable) {
            final CredentialsInternal renewed = renewable.renew();
            if (renewed != null) {
                this.creds = renewed;
                return true;
            }
        }
        final NtlmAuthenticator auth = NtlmAuthenticator.getDefault();
        if (auth != null) {

 *
 * This interface defines methods for credentials that can be
 * automatically renewed during long-running operations.
 *
 * @author mbechler
 */
public interface SmbRenewableCredentials extends CredentialsInternal {

    /**
     * Renew the credentials
     *
     * @return the renewed credentials
     */
    CredentialsInternal renew();

    }

    @Test
    @DisplayName("Should renew credentials")
    void testRenewCredentials() {
        // Given
        String hint = "hint";
        Throwable error = new Exception();
        when(mockContext.renewCredentials(hint, error)).thenReturn(true);

        // When
        boolean renewed = mockContext.renewCredentials(hint, error);

        // Then

     */
    CIFSContext withCredentials(Credentials creds);

    /**
     * Attempt to renew credentials after authentication failure
     *
     * @param locationHint URL or location hint for credential renewal
     * @param error the error that triggered renewal
     * @return whether new credentials are obtained
     */
    boolean renewCredentials(String locationHint, Throwable error);

     * This method performs authentication checks and sets up the necessary
     * form parameters and rendering data for the help page display.
     *
     * @return HtmlResponse containing the rendered help page or redirect to login if authentication is required
     */
    @Execute
    public HtmlResponse index() {
        if (isLoginRequired()) {
            return redirectToLogin();
        }

    /**
     * File has been modified
     */
    int FILE_ACTION_MODIFIED = 0x00000003;

    /**
     * File has been renamed (old name)
     */
    int FILE_ACTION_RENAMED_OLD_NAME = 0x00000004;

    /**
     * File has been renamed (new name)
     */
    int FILE_ACTION_RENAMED_NEW_NAME = 0x00000005;

    /**
     * File stream has been added
     */

            this.cachedSubject = null;
            return null;
        }
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.SmbRenewableCredentials#renew()
     */
    @Override
    public CredentialsInternal renew() {
        log.debug("Renewing credentials");
        this.cachedSubject = null;
        getSubject();
        return this;
    }

    /**
     * {@inheritDoc}

        }
    }

    @Test
    @DisplayName("renew: invokes getSubject and returns self")
    void testRenewInvokesGetSubjectAndReturnsSelf() {
        JAASAuthenticator auth = spy(new JAASAuthenticator());
        // Avoid real JAAS by stubbing getSubject
        doReturn(new Subject()).when(auth).getSubject();

        // Act
        CredentialsInternal result = auth.renew();

        // Assert interaction and return value