return new TransformedIterator<Entry<K, V>, Entry<K, V>>(filteredEntrySet.iterator()) {
          @Override
          Entry<K, V> transform(Entry<K, V> entry) {
            return new ForwardingMapEntry<K, V>() {
              @Override
              protected Entry<K, V> delegate() {
                return entry;
              }

              @Override
              @ParametricNullness