public class MergingHandler : handler<T> where T : Command {

  public Handle(T command) {
    var events = EventStore.GetEventsSinceVersion(command.AggregateId, command.ExpectedVersion);
    next.Handle(command);
    var potentialEvents = UnitOfWork.Current.Peek();
    foreach(Event e in events) {
      foreach(Event potential in potentialEvents) {
        if(ConflictManager.ConflictsWith(potential, e)) {
          throw new RealConcurrencyException();
        }
      }
    }
  }

  public void ConflictsWith(Event potential, Event e){

  }

}