Referencing node view on setDefaultNodeLongClickListener

[testica]

I want to show a PopupMenu when a node in long clicked.

treeView.setDefaultNodeLongClickListener { node, value ->
    // show popup to remove file
    val popup = PopupMenu(context!!, node.viewHolder.view)
    //Inflating the Popup using xml file
    popup.menuInflater
        .inflate(R.menu.file_menu, popup.menu)
    popup.show()
    true
}

In PopupMenu(context!!, node.viewHolder.view) I need to set a view to hook the popup menu, but node.viewHolder.view don't show nothing as result.

What is the proper view of node ?

[testica]

I got a solution:

Inside createNodeView in BaseNodeViewHolder

view.id = node!!.id

So, in setDefaultNodeLongClickListener I got view reference through id:

treeView.setDefaultNodeLongClickListener { node, value ->
    // show popup to remove file
    val popup = PopupMenu(context!!, vFiles.findViewById(node.id))
    //Inflating the Popup using xml file
    popup.menuInflater
        .inflate(R.menu.file_menu, popup.menu)
    popup.show()
    true
}

vFiles is the container view of treeview