function handleRootToNode(model, index) {
            var targetInfo = retrieveTargetInfo(payload, [ROOT_TO_NODE_ACTION$1], model);

            if (targetInfo) {
                var originViewRoot = model.getViewRoot();
                if (originViewRoot) {
                    payload.direction = aboveViewRoot(originViewRoot, targetInfo.node)
                        ? 'rollUp' : 'drillDown';
                }
                model.resetViewRoot(targetInfo.node);
            }
        }
Init node children by order and update visual

@param {TreeNode} node  root node
@param {boolean}  isAsc if is in ascendant order