NavigableMap<K, V2> transformValues(
          NavigableMap<K, V1> fromMap, Function<? super V1, V2> function) {
    return transformEntries(fromMap, asEntryTransformer(function));
  }

  /**
   * Returns a view of a map whose values are derived from the original map's entries. In contrast
   * to {@link #transformValues}, this method's entry-transformation logic may depend on the key as

      NavigableMap<K, V2> transformValues(
          NavigableMap<K, V1> fromMap, Function<? super V1, V2> function) {
    return transformEntries(fromMap, asEntryTransformer(function));
  }

  /**
   * Returns a view of a map whose values are derived from the original map's entries. In contrast
   * to {@link #transformValues}, this method's entry-transformation logic may depend on the key as