public async Task <IActionResult> DishBadDrinksSuggestion(string dishId) { if (string.IsNullOrEmpty(dishId)) { return(BadRequest()); } var result = matrixService.GetSpecificDishWithNeverDrinks(dishId); if (result.Item1 == null && result.Item2 == null) { return(Conflict()); } return(Ok(result)); }