return result == null
        ? lazyInverse =
            new JdkBackedImmutableBiMap<>(
                new InverseEntries<>(entries),
                backwardDelegate,
                forwardDelegate,
                /* inverse= */ this)
        : result;
  }

  private static final class InverseEntries<K extends @Nullable Object, V extends @Nullable Object>
      extends ImmutableList<Entry<V, K>> {