return new NavigableKeySet(sortedMap().tailMap(fromElement, inclusive));
    }
  }

  /** Removes all values for the provided key. */
  private void removeValuesForKey(@Nullable Object key) {
    Collection<V> collection = Maps.safeRemove(map, key);

    if (collection != null) {
      int count = collection.size();
      collection.clear();
      totalSize -= count;