/guava/android/guava/src/com/google/common/collect/HashBiMap.java
private long index = biMap.firstInInsertionOrder;
private int index = biMap.firstInInsertionOrder;
} @ParametricNullness abstract T forEntry(int entry); @Override public Iterator<T> iterator() { return new Iterator<T>() { <extra_id_0> private int indexToRemove = ABSENT; private int expectedModCount = biMap.modCount; private int remaining = biMap.size; private void checkForComodification() { if (biMap.modCount != expectedModCount) { throw new ConcurrentModificationException();