Is there GlyphsPluginBase have addMenuItemsForEvent:(NSEvent *)theEvent toMenu:(NSMenu *)theMenu; now?

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Because long ago, I asked if there was such an interface.

I wonder if I can add a custom right-click menu to the toolbar？

Why do you need to right click on the toolbar? There is a API for general context menu access in the works. But it is not ready, yet.

Now I have this requirement, so ask if the API is ready?