return standardAddAll(index, elements);
    }

    @Override
    public void clear() {
      standardClear();
    }

    @Override
    public boolean contains(Object object) {
      return standardContains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return standardContainsAll(collection);
    }

    @Override
    public boolean remove(Object object) {

   * #tailSet}. If you override {@link #tailSet}, you may wish to override {@link #contains} to
   * forward to this implementation.
   *
   * @since 7.0
   */
  @Override
  protected boolean standardContains(@CheckForNull Object object) {
    try {
      // any ClassCastExceptions and NullPointerExceptions are caught
      @SuppressWarnings({"unchecked", "nullness"})

      return standardAddAll(index, elements);
    }

    @Override
    public void clear() {
      standardClear();
    }

    @Override
    public boolean contains(Object object) {
      return standardContains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return standardContainsAll(collection);
    }

    @Override
    public boolean remove(Object object) {

    }

    @Override
    public void clear() {
      standardClear();
    }

    @Override
    public boolean contains(@Nullable Object object) {
      return standardContains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return standardContainsAll(collection);
    }

    @Override
    public boolean isEmpty() {

      standardClear();
    }

    @Override
    public int count(Object element) {
      return standardCount(element);
    }

    @Override
    public boolean contains(Object object) {
      return standardContains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return standardContainsAll(collection);
    }

    @Override
    public boolean remove(Object object) {

      return standardAddAll(collection);
    }

    @Override
    public void clear() {
      standardClear();
    }

    @Override
    public boolean contains(Object object) {
      return standardContains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return standardContainsAll(collection);
    }

    @Override
    public boolean remove(Object object) {

   * {@link #iterator}, you may wish to override {@link #contains} to forward to this
   * implementation.
   *
   * @since 7.0
   */
  protected boolean standardContains(@CheckForNull Object object) {
    return Iterators.contains(iterator(), object);
  }

  /**
   * A sensible definition of {@link #containsAll} in terms of {@link #contains} . If you override

   * #tailSet}. If you override {@link #tailSet}, you may wish to override {@link #contains} to
   * forward to this implementation.
   *
   * @since 7.0
   */
  @Override
  protected boolean standardContains(@CheckForNull Object object) {
    try {
      // any ClassCastExceptions and NullPointerExceptions are caught
      @SuppressWarnings({"unchecked", "nullness"})

   * {@link #iterator}, you may wish to override {@link #contains} to forward to this
   * implementation.
   *
   * @since 7.0
   */
  protected boolean standardContains(@CheckForNull Object object) {
    return Iterators.contains(iterator(), object);
  }

  /**
   * A sensible definition of {@link #containsAll} in terms of {@link #contains} . If you override

      standardClear();
    }

    @Override
    public int count(Object element) {
      return standardCount(element);
    }

    @Override
    public boolean contains(Object object) {
      return standardContains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return standardContainsAll(collection);
    }

    @Override
    public boolean remove(Object object) {