/* param Node The node to check. Node may be NULL, corresponding to a leaf. */
BOOLEAN NodeIsNullOrBlack(IN CONST RED_BLACK_TREE_NODE *Node)
/* param Node The node to check. Node may be NULL, corresponding to a leaf. */
BOOLEAN NodeIsNullOrBlack(IN CONST RED_BLACK_TREE_NODE *Node)
{
  return (BOOLEAN)(Node == NULL || Node->Color == RedBlackTreeBlack);
}