Af:tree initiallyExpand nodes

Hi all,
I'm using JDeveloper 11g, ADF RC, and ADF BD.
I've implemented my menu, using the af:tree component following two posts of Chris Muir.
http://one-size-doesnt-fit-all.blogspot.com/2007/05/back-to-programming-programmatic-adf.html
and
http://one-size-doesnt-fit-all.blogspot.com/2007/05/follow-up-programmatic-adf-faces-tree.html
Now, i need to display the tree initially with some of the nodes expanded. How can I achieve this?
Thank you so much
Joseba

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Hi,
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Af:tree initiallyExpand nodes

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