private IEnumerable<Route> GetAllChildrenRoutesNotVisited(Route currentRoute)
{
return GetAllChildrenRoutes(currentRoute).Where(x => x.Visited == false);
}
private IEnumerable<Route> GetAllChildrenRoutes(Route currentRoute, bool copy = false)
{
var routes = copy ? Graph.CopyRoutes() : Graph.QueryRoutes();
return routes.Where(x => x.StartingTown == currentRoute.EndingTown);
}