public EntrancePoint AddEntrance(Id <AbstractNode> abstractNodeId, Position relativePosition)
{
var entrancePoint = new EntrancePoint(abstractNodeId, relativePosition);
EntrancePoints.Add(entrancePoint);
return(entrancePoint);
}
public EntrancePoint AddEntrancePoint(int abstractId, ConcreteNode node)
{
EntrancePoint point = new EntrancePoint(abstractId, node);
EntrancePoints.Add(point);
return(point);
}