phetmenu inherits from ObjectIO, https://github.com/phetsims/joist/issues/445 https://github.com/phetsims/scenery/issues/711
phetmenu inherits from ObjectIO, https://github.com/phetsims/joist/issues/445 https://github.com/phetsims/scenery/issues/711

phetsims/joist,phetsims/joist,phetsims/joist