TreeView component - can we do a lazy load of node data?

[fredbasset]

Hi,

I'm using the excellent tree view component in a Java web app. For
simplicity I currently have it pre-load all the content for the tree
(i.e. all the elements of the list). I'd prefer to have a scheme
where when the user presses the '+' to expand a folder, then a request
is made to the server to get new data which would then appear as new
tree nodes.

Is this doable?

Thanks,
Fred