code: public ExchangeRate getExchangeRate(String baseCode, String termCode){
          return getExchangeRate(Monetary.getCurrency(baseCode), Monetary.getCurrency(termCode));
      }
docs: Access a {@link javax.money.convert.ExchangeRate} using the given currencies. The
  {@link javax.money.convert.ExchangeRate} may be, depending on the data provider, eal-time or
  deferred. This method should return the rate that is <i>currently</i>
  valid.
  
  @param baseCode base currency code, not {@code null}
  @param termCode term/target currency code, not {@code null}
  @return the matching {@link javax.money.convert.ExchangeRate}.
  @throws javax.money.convert.CurrencyConversionException If no such rate is available.
  @throws javax.money.MonetaryException           if one of the currency codes passed is not valid.