return spliterator.tryAdvance(action);
    }

    @Override
    @Nullable GeneralSpliterator<E> trySplit() {
      Spliterator<E> split = spliterator.trySplit();
      return split == null ? null : new GeneralSpliteratorOfObject<>(split);
    }
  }

  private static final class GeneralSpliteratorOfPrimitive<
          E extends @Nullable Object, C, S extends Spliterator.OfPrimitive<E, C, S>>

    if (specialCases.containsKey(constantName)) {
      return specialCases.get(constantName);
    }
    List<String> parts = Lists.newArrayList();
    for (String part : SPLITTER.split(constantName)) {
      if (!uppercaseAcronyms.contains(part)) {
        part = part.charAt(0) + Ascii.toLowerCase(part.substring(1));
      }
      parts.add(part);
    }
    return JOINER.join(parts);
  }