public IEnumerable Handle(Func <Guid, ParticipantAggregate> al, RemoveParticipantFromRoom command)
        {
            var agg = al(command.Id);

            yield return(new ParticipantRemovedFromRoom
            {
                Id = command.Id
            });
        }
        public JsonResult RemoveFromRoom(RemoveParticipantFromRoom command)
        {
            Domain.Dispatcher.SendCommand(command);

            return(Json(command));
        }