Screen-reader only sees text property of QAction

I'm trying to make the screen-reader tell the shortcut for a QAction object contained in a QMenu. As far as I can tell the screen reader only sees the text property of QAction and I cannot add there the string for shortcut, because it will cause duplication. I've tried setting other properties like:
QAction::toolTip
QAction::whatsThis
QAction::IconText
etc.
,but the screen-reader doesn't see any of them.