private final Predicate<? super Entry<K, V>> entryPredicate;
    private final Map<K, V> filteredDelegate;

    FilteredEntryNavigableMap(
        NavigableMap<K, V> unfiltered, Predicate<? super Entry<K, V>> entryPredicate) {
      this.unfiltered = checkNotNull(unfiltered);
      this.entryPredicate = entryPredicate;
      this.filteredDelegate = new FilteredEntryMap<>(unfiltered, entryPredicate);
    }

    @Override