``` children as ObservableList lt T gt addListener ListChang kotlinlang #tornadofx

```(children as? ObservableList<T>)?.addList...

aimozg

07/16/2018, 2:19 PM

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(children as? ObservableList<T>)?.addListener(ListChangeListener { change ->

check if

item

is still inside... TreeView is not accessible at the moment but is at the call site (TreeView<T>.populate)