I'm working with the Tree View widget and have found that leaf nodes
stay open even after the arrayData has changed. For example, if I
click on leaf node 2 and 4 to open them up for further inspection but
then load new arrayData those same leaf nodes are already expanded
with the new data.
Is there a way via code to close all the leaf nodes, or to restrict
the widget so only 1 node can be open at a time?
--Andrew Bell
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