public function has($sourceName, $currencyCode, \DateTime $date = null, $rateType = RateType::MEDIAN)
    {
        return $this->repository->has($sourceName, CurrencyCodeUtil::clean($currencyCode), $date, $rateType);
    }
public function has($sourceName, $currencyCode, \DateTime $date = null, $rateType = RateType::MEDIAN)
    {
        return $this->repository->has($sourceName, CurrencyCodeUtil::clean($currencyCode), $date, $rateType);
    }
{@inheritdoc}

@throws \RunOpenCode\ExchangeRate\Exception\UnknownCurrencyCodeException