public async Task <ActionResult <TrainModel> > CreateTrainAsync(CreateTrainModel createTrainModel)
{
var trainModel = new TrainModel
{
TrainName = createTrainModel.TrainName,
Wagons = null
};
var createdTrain = await _trainService.CreateTrainAsync(trainModel);
return(CreatedAtAction(nameof(GetTrainAsync), new { TrainId = createdTrain.TrainId }, createdTrain));
}