public ExchangeRateCreateService(
     IGetDataForUrl getDataForUrl,
     IRepository <ExchangeRate> repository)
 {
     _getDataForUrl = getDataForUrl;
     _repository    = repository;
 }
 public CurrencyExchangeRateCreateService(
     IGetDataForUrl getDataForUrl,
     IRepository <CurrencyCodesReference> repository)
 {
     _getDataForUrl = getDataForUrl;
     _repository    = repository;
 }