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An iterator which forwards all its method calls to another iterator. Subclasses should override one or more methods to modify the behavior of the backing iterator as desired per the decorator pattern.

Kevin Bourrillion
2.0 (imported from Google Collections Library)
public abstract class ForwardingIterator<T>
    extends ForwardingObject implements Iterator<T> {

Constructor for use by subclasses.
  protected ForwardingIterator() {}
  @Override protected abstract Iterator<T> delegate();
  public boolean hasNext() {
    return delegate().hasNext();
  public T next() {
    return delegate().next();
  public void remove() {
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