// Create a DfsReferral instance with the mock data
        DfsReferral dfsReferral = new DfsReferral(mockData);

        // Verify that getData() returns the same mock data object
        assertEquals(mockData, dfsReferral.getData(), "getData() should return the DfsReferralData object passed to the constructor.");
    }

    /**
     * Test the toString method.
     */
    @Test
    void testToString() {

     * for metadata or logout operations, so this method returns null.
     *
     * @param responseType The type of SSO response requested
     * @return Always returns null for SPNEGO authentication
     */
    @Override
    public ActionResponse getResponse(final SsoResponseType responseType) {
        return null;
    }

    /**
     * Performs logout for the specified user.
     *

        if (auth != null) {
            return;
        }
        auth = a;
    }

    /**
     * Gets the default NTLM authenticator.
     * @return the default authentication credentials provider
     */
    public static NtlmAuthenticator getDefault() {
        return auth;
    }

    /**
     * Gets the URL that is requesting authentication.
     * @return the URL requiring authentication
     */

        }
    }

    /**
     * Returns the Kerberos ticket.
     *
     * @return the KerberosTicket object
     */
    public KerberosTicket getTicket() {
        return this.apRequest.getTicket();
    }

    /**
     * Returns the Kerberos AP request.
     *
     * @return the KerberosApRequest object
     */
    public KerberosApRequest getApRequest() {

    protected HttpServletRequest request;

    /**
     * Returns an empty OptionalThing for login manager since API actions
     * use token-based authentication instead of traditional session-based login.
     *
     * @return empty OptionalThing indicating no login manager is used
     */
    @Override
    protected OptionalThing<LoginManager> myLoginManager() {
        return OptionalThing.empty();
    }

    /**

     * @return {@code true} to visit siblings nodes of this node as well, {@code false} to skip siblings
     */
    boolean accept(@Nonnull NodeVisitor visitor);

    /**
     * Returns a new tree starting at this node, filtering the children.
     * Note that this node will not be filtered and only the children
     * and its descendant will be checked.
     *
     * @param filter the filter to apply
     * @return a new filtered graph

      return super.get();
    }

    @CanIgnoreReturnValue
    @Override
    @ParametricNullness
    public final V get(long timeout, TimeUnit unit)
        throws InterruptedException, ExecutionException, TimeoutException {
      return super.get(timeout, unit);
    }

    @Override
    public final boolean isDone() {
      return super.isDone();
    }

    @Override

    }

    /**
     * Returns the domain.
     *
     * @return the authentication domain
     */
    public String getDomain() {
        return domain;
    }

    /**
     * Returns the username.
     *
     * @return the username
     */
    public String getUsername() {
        return username;
    }

    /**

        return ((Map<?, ?>) value).isEmpty();
      } else if (value instanceof java.util.Optional) {
        return !((java.util.Optional<?>) value).isPresent();
      } else if (value instanceof OptionalInt) {
        return !((OptionalInt) value).isPresent();
      } else if (value instanceof OptionalLong) {
        return !((OptionalLong) value).isPresent();
      } else if (value instanceof OptionalDouble) {

        // Assert
        assertEquals(0, resultWithNull, "Should return 0 for null buffer");
        assertEquals(0, resultWithData, "Should return 0 regardless of input data");
    }

    @Nested
    class CreateResponseTests {

        @Test
        @DisplayName("createResponse returns Smb2LogoffResponse and requests CIFSContext config")
        void createResponse_happyPath() {