return CollectSpliterators.indexed(
                size(), ImmutableSet.SPLITERATOR_CHARACTERISTICS, this::get);
          }

          @Override
          ImmutableCollection<Entry<K, V>> delegateCollection() {
            return EntrySet.this;
          }

          // redeclare to help optimizers with b/310253115
          @SuppressWarnings("RedundantOverride")
          @Override