assertThat(newFirst.getHash()).isEqualTo(hashTwo);
    newFirst = newFirst.getNext();
    assertThat(newFirst.getKey()).isSameInstanceAs(keyThree);
    assertThat(newFirst.getValueReference().get()).isSameInstanceAs(valueThree);
    assertThat(newFirst.getHash()).isEqualTo(hashThree);
    assertThat(newFirst.getNext()).isNull();
  }

  public void testExpand_cleanup() {
    LocalCache<Object, Object> map =

    assertThat(newFirst.getHash()).isEqualTo(hashTwo);
    newFirst = newFirst.getNext();
    assertThat(newFirst.getKey()).isSameInstanceAs(keyThree);
    assertThat(newFirst.getValueReference().get()).isSameInstanceAs(valueThree);
    assertThat(newFirst.getHash()).isEqualTo(hashThree);
    assertThat(newFirst.getNext()).isNull();
  }

  public void testExpand_cleanup() {
    LocalCache<Object, Object> map =

    Iterator<String> iterator = singletonList("foo").iterator();
    assertThat(Iterators.getNext(iterator, "bar")).isEqualTo("foo");
  }

  public void testGetNext_withDefault_empty() {
    Iterator<String> iterator = emptyIterator();
    assertThat(Iterators.getNext(iterator, "bar")).isEqualTo("bar");
  }

  public void testGetNext_withDefault_empty_null() {

    Iterator<String> iterator = singletonList("foo").iterator();
    assertThat(Iterators.getNext(iterator, "bar")).isEqualTo("foo");
  }

  public void testGetNext_withDefault_empty() {
    Iterator<String> iterator = emptyIterator();
    assertThat(Iterators.getNext(iterator, "bar")).isEqualTo("bar");
  }

  public void testGetNext_withDefault_empty_null() {

  public static <T extends @Nullable Object> T get(
      Iterator<? extends T> iterator, int position, @ParametricNullness T defaultValue) {
    checkNonnegative(position);
    advance(iterator, position);
    return getNext(iterator, defaultValue);
  }

  static void checkNonnegative(int position) {
    if (position < 0) {
      throw new IndexOutOfBoundsException("position (" + position + ") must not be negative");
    }
  }

  public static <T extends @Nullable Object> T get(
      Iterator<? extends T> iterator, int position, @ParametricNullness T defaultValue) {
    checkNonnegative(position);
    advance(iterator, position);
    return getNext(iterator, defaultValue);
  }

  static void checkNonnegative(int position) {
    if (position < 0) {
      throw new IndexOutOfBoundsException("position (" + position + ") must not be negative");
    }
  }

   * wish to override {@link #lower} to forward to this implementation.
   */
  protected @Nullable E standardLower(@ParametricNullness E e) {
    return Iterators.getNext(headSet(e, false).descendingIterator(), null);
  }

  @Override
  public @Nullable E floor(@ParametricNullness E e) {
    return delegate().floor(e);
  }

  /**

   * wish to override {@link #lower} to forward to this implementation.
   */
  protected @Nullable E standardLower(@ParametricNullness E e) {
    return Iterators.getNext(headSet(e, false).descendingIterator(), null);
  }

  @Override
  public @Nullable E floor(@ParametricNullness E e) {
    return delegate().floor(e);
  }

  /**

        list.addLast("3");
        SLinkedList<String>.Entry e = list.getFirstEntry();
        assertThat(e.getPrevious(), is(nullValue()));
        assertThat(e.getNext().getElement(), is("2"));
        e = list.getLastEntry();
        assertThat(e.getNext(), is(nullValue()));
        assertThat(e.getPrevious().getElement(), is("2"));
        list.getEntry(1).remove();
        assertThat(list.getFirst(), is("1"));

            assertEquals(second, testMessage.getNext());
            assertEquals(third, second.getNext());
        }

        @Test
        @DisplayName("Should set next message")
        void testSetNext() {
            TestServerMessageBlock2 nextMessage = new TestServerMessageBlock2(mockConfig);
            testMessage.setNext(nextMessage);
            assertEquals(nextMessage, testMessage.getNext());