docs: public static HpelFormatter getFormatter(String formatStyle) {
          if (formatStyle != null && !"".equals(formatStyle)) {
              if (formatStyle.equalsIgnoreCase(FORMAT_BASIC)) {
                  return new HpelBasicFormatter();
              } else if (formatStyle.equalsIgnoreCase(FORMAT_ADVANCED)) {
                  return new HpelAdvancedFormatter();
              } else if (formatStyle.equalsIgnoreCase(FORMAT_CBE101)) {
                  return new HpelCBEFormatter();
              } else if (formatStyle.equalsIgnoreCase(FORMAT_JSON)) {
                  return new HpelJsonFormatter();
              }
          }
  
          throw new IllegalArgumentException(formatStyle + " is not a valid formatter style");
      }