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I have a MenuBar named initMenuBar.
I'd like to add screen reader accessibility to tell a user to use the arrow keys to find the dropdown choices.
Reading the Vaadin API docs, this is how I intuitively thought to add the screen reader informaton, but it does not work.
initMenuBar.setAssistivePostfix(ASSISTIVE_NOTIFICATION, "Use down arrow to navigate to sub menu choices");
Please advise on how to do this. Thank you.