/guava/android/guava/src/com/google/common/collect/HashBiMap.java
this.forward = null;
this.forward = forward;
return (result == null) ? inverse = new Inverse<K, V>(this) : result; } static class Inverse<K extends @Nullable Object, V extends @Nullable Object> extends AbstractMap<V, K> implements BiMap<V, K>, Serializable { private final HashBiMap<K, V> forward; Inverse(HashBiMap<K, V> forward) { <extra_id_0> } @Override public int size() { return forward.size; } @Override