code: private void parseCurrencies(List<String> content) throws Exception {
          for (String line : content) {
              Matcher matcher = CURRENCY_REGEX_LINE.matcher(line);
              if (matcher.matches()) {
                  String currencyCode = matcher.group(1);
                  int numericCode = Integer.parseInt(matcher.group(2));
                  int digits = Integer.parseInt(matcher.group(3));
                  registerCurrency(currencyCode, numericCode, digits);
              }
          }
      }
docs: parse the currencies