public static CollisionPair Add(CollisionPair.Name colPairName, GameObject treeA, GameObject treeB) { CollisionPairManager pMan = CollisionPairManager.PrivGetInstance(); Debug.Assert(pMan != null); CollisionPair pPair = (CollisionPair)pMan.BaseAdd(); Debug.Assert(pPair != null); pPair.SetCollisionPair(colPairName, treeA, treeB); return(pPair); }