public LineSegmentStations(Station a, Station b, LineSegmentStationsManager manager)
{
getIdForSegments(a, b, out bool invert);
if (invert)
{
s1 = b;
s2 = a;
}
else
{
s1 = a;
s2 = b;
}
path = manager.getPathForStations(s1, s2);
}