code: public static MonetaryAmountDecimalFormatBuilder newInstance() {
          MonetaryAmountDecimalFormatBuilder builder = new MonetaryAmountDecimalFormatBuilder();
          builder.decimalFormat = (DecimalFormat) NumberFormat.getCurrencyInstance();
          return builder;
      }
docs: Creates a new instance of {@link MonetaryAmountDecimalFormatBuilder} with default {@link Locale}.
  @see NumberFormat#getCurrencyInstance()
  @return a new instance of {@link MonetaryAmountDecimalFormatBuilder}