*/
    public DesignForm() {
        // Default constructor with explicit documentation
    }

    /**
     * The multipart file containing the design content to upload.
     */
    public MultipartFormFile designFile;

    /**
     * The name of the design file being uploaded.
     */
    public String designFileName;

    /**
     * The target file name for the design file.
     */
    public String fileName;

    /**
     * The multipart file containing design resources to be uploaded.
     * This can include CSS files, JSP templates, images, or other design assets.
     */
    @Required
    public MultipartFormFile designFile;

    /**
     * The name for the design file being uploaded.
     * Must not contain invalid file system characters like backslash, colon, asterisk, etc.
     */