* There's no generic value insertion. Instead find the
* place you want to add a node and then invoke insertLeft
* or insertRight.
* <P>
* Insert Cell as the left child of current node, and then
* rebalance the tree it is in.
* @param Cell the Cell to add
* @param root, the root of the current tree
* Returns: the new root of the current tree. (Rebalancing
* can change the root!)
* There's no generic value insertion. Instead find the * place you want to add a node and then invoke insertLeft * or insertRight. * <P> * Insert Cell as the left child of current node, and then * rebalance the tree it is in. * @param Cell the Cell to add * @param root, the root of the current tree * Returns: the new root of the current tree. (Rebalancing * can change the root!)