class SpotRateSelectorBuilder {

  static CurrencyPair parse(String currencyPair) {
    if (currencyPair.length() == 7) {
      return CurrencyPair.parse(currencyPair);
    } else {
      return CurrencyPair.parse(currencyPair.substring(0, 3) + "/" + currencyPair.substring(3));
    }
  }

    SpotRateSelectorBuilder(Scenario scenario);

}