src/vs/workbench/contrib/comments/browser/commentsEditorContribution.ts/PreviousCommentThreadAction/constructor
class PreviousCommentThreadAction:	constructor() {
		super({
			id: 'editor.action.previousCommentThreadAction',
			label: nls.localize('previousCommentThreadAction', "Go to Previous Comment Thread"),
			alias: 'Go to Previous Comment Thread',
			precondition: undefined,
			kbOpts: {
				kbExpr: EditorContextKeys.focus,
				primary: KeyMod.Shift | KeyMod.Alt | KeyCode.F9,
				weight: KeybindingWeight.EditorContrib
			}
		});
	}