static getById(id);

    static getAll();

    static insert(puzzle);

    static deleteById(puzzle_id);

    static getFilteredSearch(filters);

    static update(puzzle);


    static getAllTypes();

    static getTypeById(typeId);

    static getManufacturerById(manufacturerId);

    static getAllManufacturers();

    static getFilters();

    static getPuzzleFromFormRequest(req);

    static getPuzzleSubscribers(puzzleId);