protected abstract void parseInteger(CacheBuilderSpec spec, int value);

    @Override
    public void parse(CacheBuilderSpec spec, String key, @Nullable String value) {
      if (isNullOrEmpty(value)) {
        throw new IllegalArgumentException("value of key " + key + " omitted");
      }
      try {
        parseInteger(spec, Integer.parseInt(value));
      } catch (NumberFormatException e) {

    protected abstract void parseInteger(CacheBuilderSpec spec, int value);

    @Override
    public void parse(CacheBuilderSpec spec, String key, @Nullable String value) {
      if (isNullOrEmpty(value)) {
        throw new IllegalArgumentException("value of key " + key + " omitted");
      }
      try {
        parseInteger(spec, Integer.parseInt(value));
      } catch (NumberFormatException e) {

static FailureOr<SmallVector<int32_t>> parseI32Array(AsmParser& parser) {
  SmallVector<int32_t> elements;
  auto elementParser = [&]() {
    int32_t element;
    if (failed(parser.parseInteger(element))) return failure();
    elements.push_back(element);
    return success();
  };
  if (parser.parseCommaSeparatedList(AsmParser::Delimiter::Square,
                                     elementParser))