namespace MyOffice.Data.Repositories.Currency; using Models.Currencies; public interface ICurrencyRateRepository { List GetLastRates(Guid currencyId, DateTime? before = null, int count = 1); Dictionary GetLastRates(Guid userId, List currencyIds, DateTime? before = null); bool AddRate(CurrencyRate currencyRate); List GetAtDate(Guid currencyId, DateTime date); }