private void AddForConsolidation(HeapNode newRoots) { Debug.Assert(newRoots != null); foreach (var root in newRoots.GetSiblings()) { Debug.Assert(root.LeftSibling != null && root.RightSibling != null); } newRoots.Parent = null; if (_consolidateRoots == null) { _consolidateRoots = newRoots; } else { _consolidateRoots.InsertBefore(newRoots); } foreach (var root in newRoots.GetSiblings()) { Debug.Assert(root.LeftSibling != null && root.RightSibling != null); } }