public static async Task <(Taxi Taxi, Driver Driver, int ID)> AddDummyRideAsync(this TaxiDataContext DbContext) { var newTaxi = await DbContext.AddDummyTaxiAsync(); var newDriver = await DbContext.AddDummyDriverAsync(); var newRideID = await DbContext.StartRideAsync(newTaxi.Taxi, newDriver.Driver); return(newTaxi.Taxi, newDriver.Driver, newRideID); }