/**
* Removes the current element in the iteration.
*
* @throws java.lang.IllegalStateException if the next method has not yet been called, or the
* remove method has already been called after the last call to the next method.
* @see java.util.Iterator#remove()
*/
@Override
public void remove() {
Assert.state(nextCalled.compareAndSet(true, false), "next was not called before remove");
iterators.peek().remove();
}
