@Override public K firstKey() { return decorated().firstKey(); }
@Override public K lastKey() { return decorated().lastKey(); }
@Override public K nextKey(final K key) { return decorated().nextKey(key); }
@Override public K previousKey(final K key) { return decorated().previousKey(key); }
@Override public OrderedMapIterator<K, V> mapIterator() { return decorated().mapIterator(); }