Method valueOrNull

corpus/java/training/guava/collect/Maps.java:3661–3664

(@Nullable Entry<?, V> entry)

  }

  @Nullable
  static <V> V valueOrNull(@Nullable Entry<?, V> entry) {
    return (entry == null) ? null : entry.getValue();
  }

  static class SortedKeySet<K, V> extends KeySet<K, V> implements SortedSet<K> {
    SortedKeySet(SortedMap<K, V> map) {