code: protected void throwConcurrentParallelRunnerException(ConcurrentParallelOption option, LaCountdownRaceExecutionException e) {
          final String notice = "Failed to finish processes of parallel runners.";
          e.getRunnerCauseList().ifPresent(causeList -> {
              final ExceptionMessageBuilder br = new ExceptionMessageBuilder();
              br.addNotice(notice);
              br.addItem("Advice");
              br.addElement("Confirm causes thrown by runners.");
              br.addItem("Option");
              br.addElement(option);
              final String msg = br.buildExceptionMessage();
              throw new ConcurrentParallelRunnerException(msg, e, causeList);
          }).orElse(() -> {
              throw new ConcurrentParallelRunnerException(notice, e);
          });
      }
docs: ---------