using System;

// --- Infra ---

record LaneAddedCommand(Terminal term, ....) : IDomainEvent;

​

class LaneAddedCommandHandler : .... {}

// ---

​

// --- Domain ---

​

class TerminalLanes {

    private IEnumerable<Lane> _lanes;

    private Terminal _terminal;

    ctor

    public Result<IEnumerable<IEventMediatr>> AddLane(string name, ...) {

        // recupérer l'order

        // Creer la lane

        Lane lane = Lane.Create(name, order, ...)

        if(_lanes.Select(l => l.Name).Contains(lane.Name))

            return Result.Fail(...)

        return new List<IEventMediatr> { new LaneAddedEvent(lane.Terminal, ...) };

    }

}

​

// --- Controller ---

​

public class Program

{

    public static void Main()

    {

        // recupération de la TerminalLanes à partir du repo

        Result<TerminalLanes> tl = await _repository.GetTerminalLanes(terminal);

        if(tl.IsFailed)

            return ...;

        var result = tl.AddLane(name);

        var results = result.Value.Select(_mediatr.Send);

        // merge results 

    }

}