Expanding a node of a Tree programatically

[ncarrasco2006]

Hello,

I am migrating a application from Richfaces 3.X to Richfaces 4.2 .

I am having problems finding how to expand a node.

In richfaces 3.X I did something like:

TreeState state = (TreeState) uiTree.getComponentState();

TreeRowKey parentRowTree = (TreeRowKey) uiTree.getParentRowKey(treeRowKey);

try {

    state.expandNode(uiTree, parentRowTree);

} catch (IOException e) {

    log.info(e);

}

Unfortunately, TreeState class is not more at Richfaces 4 and I haven't find a way to do that.

Thanks in advance,

Nicolás.