*       <td>{@code /home/user/myproject/target/classes}</td>
     *       <td>{@code /home/user/myproject/target/classes/WEB-INF/classes}</td>
     *       <td>Relative path with subdirectories</td>
     *     </tr>
     *     <tr>
     *       <td>{@code Optional.of(Path.of("/tmp/custom"))}</td>
     *       <td>{@code /home/user/myproject/target/classes}</td>
     *       <td>{@code /tmp/custom}</td>

     */
    protected int thumbnailPathCacheSize = 10;

    /**
     * File extension for generated thumbnail images.
     */
    protected String imageExtention = "png";

    /**
     * Number of subdirectories for organizing thumbnails.
     */
    protected int splitSize = 10;

    /**
     * Maximum size of the thumbnail generation task queue.
     */
    protected int thumbnailTaskQueueSize = 10000;

     *
     * @param filter
     *            see constants in {@link FileNotifyInformation}
     * @param recursive
     *            whether to also watch subdirectories
     * @return watch context, needs to be closed when finished
     * @throws CIFSException if an error occurs accessing the resource
     */
    SmbWatchHandle watch(int filter, boolean recursive) throws CIFSException;

* Hay un subdirectorio `app/routers/` con otro archivo `__init__.py`, por lo que es un "subpaquete de Python": `app.routers`.
* El archivo `app/routers/items.py` está dentro de un paquete, `app/routers/`, por lo que es un submódulo: `app.routers.items`.
* Lo mismo con `app/routers/users.py`, es otro submódulo: `app.routers.users`.