/**
 * Show 'Starred' focus list in 2Do.
 *
 * @returns 2Do show starred URL.
 * @example
 * showStarred()
 * // => 'twodo://x-callback-url/showStarred'
 * @link https://www.2doapp.com/kb/article/url-schemes.html
 */
export declare function showStarred(): string;