HyperTreeList and wx.EVT_TREE_ITEM_MENU

Is there a secret to getting HyperListTree to respond to emit/respond
to to this event.

Note that CustomTreeCtrl does respond to this event so it is a bit
puzzling that HyperTreeList does not.
To demonstrate this, use the demo and check the box for
EVT_TREE_ITEM_MENU, right click on an item and watch the logs. The
should be an entry in the log, but there is nothing.

FWIW, the context menu in the demo is triggered from on wx.EVT_RIGHT_UP.

g.