/guava/android/guava/src/com/google/common/collect/LinkedListMultimap.java
previous = current.previous;previous = current = next;
previous = current = next;
@Override @ParametricNullness public V next() { if (next == null) { throw new NoSuchElementException(); } <extra_id_0> next = next.nextSibling; nextIndex++; return current.value; } @Override public boolean hasPrevious() {