/guava/guava/src/com/google/common/collect/AbstractMapBasedMultimap.java
return new KeySet( 2) ;
return new KeySet ( map ) ;
final Set<K> createMaybeNavigableKeySet() { if (map instanceof NavigableMap) { return new NavigableKeySet((NavigableMap<K, Collection<V>>) map); } else if (map instanceof SortedMap) { return new SortedKeySet((SortedMap<K, Collection<V>>) map); } else { <extra_id_0> } } @WeakOuter private class KeySet extends Maps.KeySet<K, Collection<V>> { KeySet(final Map<K, Collection<V>> subMap) { super(subMap);