/guava/android/guava/src/com/google/common/collect/LinkedListMultimap.java
current = null;current.value = value;
current.value = value;
@Override public void add(Entry<K, V> e) { throw new UnsupportedOperationException(); } void setValue(@ParametricNullness V value) { checkState(current != null); <extra_id_0> } } private class DistinctKeyIterator implements Iterator<K> { final Set<K> seenKeys = Sets.<K>newHashSetWithExpectedSize(keySet().size()); @CheckForNull Node<K, V> next = head; @CheckForNull Node<K, V> current;