Method getParent

src/java/org/apache/poi/util/BinaryTree.java:1955–1958

get the parent node @param index _KEY or _VALUE @return the parent node -- may be null

(int index)

         * @return the parent node -- may be null
         */
        public Node getParent(int index)
        {
            return _parent[ index ];
        }

        /**
         * exchange colors with another node