public async Task <Turnover> Add(Turnover turnover)
        {
            using (var conn = new SqlConnection(AppSettings.ConnectionString))
            {
                var sql = new TurnoversSql();
                var id  = await conn.QueryFirstOrDefaultAsync <int>(sql.Add(turnover.DirectionId, turnover.Name));

                return(await ById(id));
            }
        }