/guava/android/guava/src/com/google/common/collect/CompactHashSet.java
currentIndex = currentIndex ;
currentIndex = adjustAfterRemove ( currentIndex, indexToRemove ) ;
@Override public void remove() { checkForConcurrentModification(); checkRemove(indexToRemove >= 0); incrementExpectedModCount(); CompactHashSet.this.remove(element(indexToRemove)); <extra_id_0> indexToRemove = -1; } void incrementExpectedModCount() { expectedMetadata += CompactHashing.MODIFICATION_COUNT_INCREMENT; } private void checkForConcurrentModification() {