* @since 11.0
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      Multimap<K, V> filterEntries(
          Multimap<K, V> unfiltered, Predicate<? super Entry<K, V>> entryPredicate) {
    checkNotNull(entryPredicate);
    if (unfiltered instanceof SetMultimap) {
      return filterEntries((SetMultimap<K, V>) unfiltered, entryPredicate);
    }
    return (unfiltered instanceof FilteredMultimap)