[ Version ( since = "3.28" ) ]
public bool reset_on_collapse { get; set; }
The "reset-on-collapse" property denotes that all children should be removed from the node when it's row is collapsed.
It will also set DzlTreeNode:needs-build to true so the next expansion rebuilds the
children. This is useful for situations where you want to ensure the nodes are up to date (refreshed) on every expansion.