code: @Override
      public ExchangeRate getExchangeRate(MonetaryAmount amount) {
          return this.rateProvider.getExchangeRate(ConversionQueryBuilder
                  .of(conversionQuery).setBaseCurrency(amount.getCurrency())
                  .build());
          // return this.rateProvider.getExchangeRate(amount.getCurrency(),
          // getCurrency());
      }
docs: Get the exchange rate type that this provider instance is providing data
  for.
  
  @return the exchange rate type if this instance.