public function getRoadMap() {
        $road_map = new RoadMap();
        $road_map->append(new LessRoad("LESSCSS", $this->generateCacheDir($this->getProjectRootDir())));
        $road_map->append(new SourceRoad("ROOT", $this->generateCacheDir($this->getProjectRootDir())));
        $road_map->append(new BuildRoad("BuildCache", $this->getProjectRootDir()));
        return $road_map;
    }