#34223 was recently merged, which leaves Visual Studio for Mac incomplete since we do not have a UI for the code fix.

We end up with the code fix in the lightbulb menu, but we have no UI. Roslyn needs a mechanism to prevent populating the menu if there is no UI available to complete the fix.

Going forward we are aiming to move EditorFeatures.Cocoa to Roslyn itself for the new VS-Platform based editor, but in the mean time the ability to not populate the menu when we don't have the required UI is needed.