internal SuperClumpMap(ObstacleTree obstacleTree)
 {
     this.obstacleTree = obstacleTree;
 }
 internal void CalculateHierarchy()
 {
     this.hierarchy = ObstacleTree.CalculateHierarchy(groupsAndClumps);
 }
 internal SuperClumpMap(ObstacleTree obstacleTree)
 {
     this.obstacleTree = obstacleTree;
 }