}

    @ParameterizedTest(name = "Implementation is instance: {0}")
    @MethodSource("implementations")
    @DisplayName("Happy path: can create implementations and use type checks")
    void testImplementationsAreUsable(SessionSetupHandler impl) {
        // Arrange is provided by method source

        // Act & Assert
        assertNotNull(impl, "Implementation instance should not be null");

            for (String s : footer) {
                writer.writeln(s);
            }
        }
        writer.flush();
    }

    /**
     * Checks if parts of the passed in comment can be used as header comment.
     * This method checks whether a header comment can be defined (i.e. whether
     * this is the first comment in the loaded file). If this is the case, it is

            for (String s : footer) {
                writer.writeln(s);
            }
        }
        writer.flush();
    }

    /**
     * Checks if parts of the passed in comment can be used as header comment.
     * This method checks whether a header comment can be defined (i.e. whether
     * this is the first comment in the loaded file). If this is the case, it is

                }
                return Locale.ENGLISH;
            }).orElse(Locale.ENGLISH).getLanguage() + "\">";
        }
        return "</html>";
    }

    /**
     * Checks if a label with the specified key exists in the current request's label map.
     *
     * @param value the label key to check
     * @return true if the label exists, false otherwise
     */

     */
    public FessBoot(final int port, final String contextPath) {
        super(port, contextPath);
    }

    /**
     * Prepares and returns the web application path.
     * Checks for the fess.webapp.path system property first, then falls back to the parent implementation.
     *
     * @return the web application path
     */
    @Override
    protected String prepareWebappPath() {

     *
     * @param secureRandom the secure random generator
     * @param hashAlgorithm the hash algorithm to use
     * @param enforceIntegrity whether to enforce integrity checks
     */
    public PreauthIntegrityService(SecureRandom secureRandom, int hashAlgorithm, boolean enforceIntegrity) {
        this.secureRandom = secureRandom != null ? secureRandom : new SecureRandom();

In your editor, inside your function you will get type hints and completion everywhere (this wouldn't happen if you received a `dict` instead of a Pydantic model):

<img src="/img/tutorial/body/image03.png">

You also get error checks for incorrect type operations:

<img src="/img/tutorial/body/image04.png">

This is not by chance, the whole framework was built around that design.

  private static boolean isPermutation(List<?> first, List<?> second) {
    if (first.size() != second.size()) {
      return false;
    }
    ObjectCountHashMap<?> firstCounts = counts(first);
    ObjectCountHashMap<?> secondCounts = counts(second);
    if (first.size() != second.size()) {
      return false;
    }
    for (int i = 0; i < first.size(); i++) {

     * Returns the crawler client factory.
     * @return The CrawlerClientFactory instance.
     */
    public CrawlerClientFactory getClientFactory() {
        return clientFactory;
    }

    /**
     * Checks if the crawler is running in background mode.
     * @return true if in background mode, false otherwise.
     */
    public boolean isBackground() {
        return background;
    }

    /**

     *
     * @return the number of consecutive heartbeat failures
     */
    public int getHeartbeatFailures() {
        return heartbeatFailures;
    }

    /**
     * Checks if this registration has expired based on the timeout.
     *
     * @param timeoutMs the timeout in milliseconds
     * @return true if the registration is expired
     */
    public boolean isExpired(long timeoutMs) {