return getSessionManager().getAttribute(Constants.SEARCH_ENGINE_API_ACCESS_TOKEN, String.class)
                .map(token -> ADMIN_SERVER + token)
                .orElseThrow(() -> new FessSystemException("Cannot create an access token."));
    }

    /**
     * Generates and saves a new access token for the current session.
     * The token is used to authenticate API requests.
     */
    public void saveToken() {

                try {
                    list.add(new LabelTypePattern(labelType.getValue(), includedPaths, excludedPaths));
                } catch (final Exception e) {
                    logger.warn("Failed to create a matching pattern of a label: {}, includedPaths:{}, excludedPaths:{}",
                            labelType.getValue(), includedPaths, excludedPaths, e);
                }
            }
        }

        assertEquals(message, exception.getMessage());
        assertEquals(complexMessageCode, exception.getMessageCode());
    }

    public void test_causeChainPropagation() {
        // Setup - create a chain of exceptions
        final IllegalArgumentException rootCause = new IllegalArgumentException("Invalid character in query");

        // Test getMailReturnPath
        assertEquals("root@localhost", fessEnv.getMailReturnPath());
    }

    // Test custom properties
    public void xtest_customProperties() {
        // Create custom FessEnv with custom properties
        FessEnv.SimpleImpl customEnv = new FessEnv.SimpleImpl() {
            protected Properties prepareProperties() {
                Properties props = new Properties();

    protected void setUpChild() throws Exception {
        queryCommand = new TermQueryCommand();
        queryCommand.register();
    }

    private void setQueryType(final String queryType) {
        // Re-create the base FessConfig with the new query type
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

```java
public static final MediaType JSON = MediaType.get("application/json");

OkHttpClient client = new OkHttpClient();

String post(String url, String json) throws IOException {
  RequestBody body = RequestBody.create(json, JSON);
  Request request = new Request.Builder()
      .url(url)
      .post(body)
      .build();
  try (Response response = client.newCall(request).execute()) {
    return response.body().string();
  }
}

    /**
     * Sets up the mocks and the NtlmHttpURLConnection instance before each test.
     * @throws IOException
     */
    @BeforeEach
    void setUp() throws IOException {
        // Create a real URL instead of mocking to avoid protocol issues
        mockUrl = new URL("http://test.example.com/path");

        // Basic setup for mocks to avoid NullPointerExceptions

		}
	}
	return extractedSignedHeaders, ErrNone
}

// Trim leading and trailing spaces and replace sequential spaces with one space, following Trimall()
// in http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
func signV4TrimAll(input string) string {
	// Compress adjacent spaces (a space is determined by
	// unicode.IsSpace() internally here) to one space and return

    private static final String LANG_KEY = "lang";

    /** The underlying map that this DocMap wraps */
    private final Map<String, Object> parent;

    /**
     * Constructor that creates a DocMap wrapping the given parent map.
     *
     * @param parent the map to wrap and delegate operations to
     */
    public DocMap(final Map<String, Object> parent) {
        this.parent = parent;
    }

        final Map<String, String> map = ParameterUtil.parse(configParam);
        if (!map.isEmpty()) {
            paramMap.putAll(map);
        }
    }

    /**
     * Creates a configuration parameter map.
     *
     * @param configParameters the configuration parameters
     * @return the configuration parameter map
     */