src/vs/workbench/contrib/comments/browser/commentService.ts/CommentService/constructor
class CommentService:	constructor(
		@IInstantiationService protected instantiationService: IInstantiationService,
		@IWorkbenchLayoutService layoutService: IWorkbenchLayoutService
	) {
		super();
		this._register(layoutService.onDidChangeZenMode(e => {
			this.enableCommenting(!e);
		}));
	}