GetNodeTree
fNextTreeNode = Policy::GetNodeTree(fIndex)->Next(fNextTreeNode);
fNextTreeNode = Policy::GetNodeTree(fIndex)->Previous(fNextTreeNode);
fNextTreeNode = Policy::GetNodeTree(fIndex)->Next(fNextTreeNode);
Policy::GetNodeTree(index)->GetIterator(&iterator);
if (Policy::GetNodeTree(index)->FindFirstClosest(value, false,