message: core-api: deprecate app.getRoutes
diff: @@ -187,6 +187,8 @@ export type BackstageApp = {
  /**
  * Routes component that contains all routes for plugin pages in the app.
  + *
  + * @deprecated Registering routes in plugins is deprecated and this method will be removed.
  */
  getRoutes(): JSX.Element[];
  };
  