public List <RoadConnectorSide> findFreeSides(RoadConnectorSide currentSideInUse = null)
    {
        List <RoadConnectorSide> sides = new List <RoadConnectorSide>();

        foreach (var side in GetSides())
        {
            if (connectedPorts == null)
            {
                sides.Add(side);
            }
            else
            {
                var amount = connectedPorts.Count(tf => tf.Value == side.GetPath());

                if (amount < 2)
                {
                    sides.Add(side);
                }
            }
        }
        return(sides);
    }