Question about SetRoad

SetTerrainOwnershipSingle? No, there is nothing like that. This is what I call:

static public void SetRoad(Vector3i position, bool exists)
{
GetInstance().SetRoadAt(position, exists);
}




public void SetRoadAt(Vector3i position, bool exists)
{
if (roadLocations.Contains(position) == exists) return;

if (exists == false)
{
roadLocations.Remove(position);
}
else
{
roadLocations.Add(position);
}

UpdateArea(HexNeighbors.GetRange(position, 1));
}



public void UpdateArea(List<Vector3i> locations)
{
foreach(Vector3i pos in locations)
{
if (World.GetInstance().hexes.ContainsKey(pos))
{
UpdateMarkerAt(pos, roadLocations.Contains(pos));
}
}
}



and so on....



Am I missing something?