+ // BH 2018.04.18 comment: addNotify() is not appropriate here. We
+ // are not changing ancestors, and keyboard action listeners do
+ // not need to be reset. addNotify() is a very expensive operation,
+ // requiring a full re-layout of all parents and children.
+ // Note in JComponent:
+ // This method is called by the toolkit internally and should
+ // not be called directly by programs.
+ // I note that addNotify() is called in several areas of Jalview.
+