docs: public synchronized OptionalThing<LaJobHistory> find(String historyKey) {
          final LaJobHistory found = historyMap.get(historyKey);
          return OptionalThing.ofNullable(found, () -> {
              final ExceptionMessageBuilder br = new ExceptionMessageBuilder();
              br.addNotice("Not found the job history by the job thread.");
              br.addItem("History Key");
              br.addElement(historyKey);
              br.addItem("Existing Key");
              if (!historyMap.isEmpty()) {
                  historyMap.forEach((key, value) -> {
                      br.addElement(key + " = " + value);
                  });
              } else {
                  br.addElement("*No history");
              }
              final String msg = br.buildExceptionMessage();
              throw new JobHistoryNotFoundException(msg);
          });
      }