Programatically expand items in TreeGrid?


Is there a particular method or some other way to programatically expand TreeGrid items? I want to be able to track the currently expanded items and after an item refresh reexpand those items.

This is in Vaadin 8.1.0.alpha 2 by the way.

This was implemented in the later alphas/betas of Vaadin 8.1 - see the expand() methods of TreeGrid.