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.

    protected boolean httpOnly = true;

    /**
     * Retrieves the user code for the current request.
     * The user code is used to uniquely identify users across sessions and requests.
     * It checks multiple sources in order: request attribute, request parameter, cookie, user bean, or generates a new one.
     *
     * @return the user code string, or null if no valid session exists
     */
    public String getUserCode() {

        // Default constructor
    }

    private long sequenceNumber;
    private int returnCode;
    private long recommendedHeartbeatInterval;
    private String error;

    /**
     * Checks if the heartbeat was successful.
     *
     * @return true if successful
     */
    public boolean isSuccess() {
        return returnCode == 0;
    }

    /**
     * Gets the sequence number.
     *

        // Default constructor
    }

    private String registrationId;
    private int returnCode;
    private byte[] contextHandle;
    private String error;

    /**
     * Checks if the registration was successful.
     *
     * @return true if successful
     */
    public boolean isSuccess() {
        return returnCode == 0;
    }

    /**

     * @param name the name of the component to retrieve
     * @return the component instance of the specified type
     */
    <T> T getComponent(String name);

    /**
     * Checks if the crawler container is available.
     *
     * @return true if the crawler container is available, false otherwise.
     */
    boolean available();

    /**

     * @return the Base64 encoded path
     */
    protected String encodePath(final String path) {
        return Base64.getUrlEncoder().encodeToString(path.getBytes(Constants.CHARSET_UTF_8));
    }

    /**
     * Checks if the given path matches this creator's pattern.
     *
     * @param path the file path to check
     * @return true if the path matches the pattern, false otherwise
     */

    /**
     * Sets the password.
     * @param password The password.
     */
    public void setPassword(final String password) {
        this.password = password;
    }

    /**
     * Checks if this authentication matches the given FTP path.
     * @param path The FTP path to check.
     * @return true if it matches, false otherwise.
     */
    boolean matches(final String path) {

 */
@GwtCompatible
@NullMarked
final class RelationshipTester<T> {
  interface ItemReporter {
    String reportItem(Item<?> item);
  }

  /**
   * A word about using {@link Equivalence}, which automatically checks for {@code null} and
   * identical inputs: This sounds like it ought to be a problem here, since the goals of this class
   * include testing that {@code equals()} is reflexive and is tolerant of {@code null}. However,

    }

    /**
     * Gets the search ID for this response.
     *
     * @return the sid
     */
    public final int getSid() {
        return this.sid;
    }

    /**
     * Checks if this is the end of the search results.
     *
     * @return the isEndOfSearch
     */
    public final boolean isEndOfSearch() {
        return this.isEndOfSearch;
    }

    /**

     */
    int decompress(byte[] compressedData, int offset, int length, byte[] outputBuffer, int outputOffset, int algorithm)
            throws CIFSException;

    /**
     * Checks if the specified compression algorithm is supported.
     *
     * @param algorithm the compression algorithm to check
     * @return true if the algorithm is supported
     */