Method getParent

src/java/org/apache/poi/util/BinaryTree.java:662–666

get a node's parent. mind you, the node, or its parent, may not exist. no problem @param node the node (may be null) in question @param index _KEY or _VALUE

(Node node, int index)

     * @param index _KEY or _VALUE
     */
    private static Node getParent(Node node, int index)
    {
        return ((node == null) ? null
                               : node.getParent(index));
    }

    /**
     * get a node's right child. mind you, the node may not exist. no