*/
    public void addFirst(final E element) {
        header.next.addBefore(element);
    }

    /**
     * Adds an element at the end.
     *
     * @param element the object to be added
     */
    public void addLast(final E element) {
        header.addBefore(element);
    }

    /**
     * Inserts an object at the specified position.
     *