e = list.getLastEntry();
        assertThat(e.getNext(), is(nullValue()));
        assertThat(e.getPrevious().getElement(), is("2"));
        list.getEntry(1).remove();
        assertThat(list.getFirst(), is("1"));
        assertThat(list.getLast(), is("3"));
        list.getLastEntry().remove();
        assertThat(list.getLast(), is("1"));
        list.getLastEntry().remove();

     * Returns the last element.
     *
     * @return the last element
     */
    public E getLast() {
        if (isEmpty()) {
            throw new NoSuchElementException();
        }
        return getLastEntry().element;
    }

    /**
     * Returns the first entry.
     *
     * @return the first entry
     */
    public Entry getFirstEntry() {
        if (isEmpty()) {
            return null;
        }