/**
 * Additional validator for the Container component type.
 * @param {object} data the form data
 * @param {object} component the container component
 * @returns true if the user has only provided a value for one of the components in the container, otherwise false.
 */
declare const mustSelectOnlyOne: (data: any, _: any, component: any) => boolean;
export default mustSelectOnlyOne;