Handed to a component's ShortcutHintProvider so it can push its sections in. Because the
dispatcher walks up the focused ancestor chain, several components can each contribute a
section (e.g. the image viewer's keys plus a global section beneath), so this only ever appends.
Handed to a component's ShortcutHintProvider so it can push its sections in. Because the dispatcher walks up the focused ancestor chain, several components can each contribute a section (e.g. the image viewer's keys plus a global section beneath), so this only ever appends.