code: public Fiat parseFiat(String currencyCode, String str) throws NumberFormatException {
          return Fiat.valueOf(currencyCode, parseValue(str, Fiat.SMALLEST_UNIT_EXPONENT));
      }
docs: Parse a human readable fiat value to a {@link Fiat} instance.
  
  @throws NumberFormatException
  if the string cannot be parsed for some reason