public static async Task<RbCurrency> GetCurrencyInfo(IDbScope dbScope, Guid currencyId)
        {
            RbCurrency currency;
            using (dbScope.Create())
            {
                var db = dbScope.Db;

                currency = await Task.Factory.StartNew(() =>
                {
                    return db.SetCommand(
                            @"SELECT TOP 1 rbc.[ID], rbc.[Name], rbc.[Caption], rbc.[ExchangeRate], rbc.[Multiplicity], rbc.[Decinations]
                        FROM RbCurrencies rbc with(nolock)
                        WHERE rbc.[ID] = @currencyId",
                            db.Parameter("currencyId", currencyId))
                        .ExecuteObject<RbCurrency>();
                });
                return currency;
            }
        }