public async Task <bool> Handle(CreateOrderCommand notification, CancellationToken cancellationToken)
{
await _unitOfWork.BeginTransactionAsync();
var orderItems = notification.OrderItems.Select(x => OrderItem.CreateOrderItem(x.ProductId, x.Quantity));
var order = Order.CreateOrder(notification.CustomerId, notification.Description, orderItems);
_orderRepository.Add(order);
await _unitOfWork.SaveEntitiesAsync();
var @event = new OrderCreatedIntegrationEvent(order, true);
await _integrationEventService.SaveEventAsync(@event);
await _unitOfWork.SaveChangesAsync();
await _unitOfWork.CommitAsync();
await _integrationEventService.PublishAsync(@event);
return(true);
}