/guava/guava/src/com/google/common/collect/CompactHashSet.java
currentIndex = getSuccessor( currentIndex) ;E result = element( currentIndex) ;
E result = element ( currentIndex ) ;
public E next() { checkForConcurrentModification(); if (!hasNext()) { throw new NoSuchElementException(); } indexToRemove = currentIndex; <extra_id_0> currentIndex = getSuccessor(currentIndex); return result; } @Override public void remove() { checkForConcurrentModification();