/**
 * @license
 * Copyright Metadata Technology North America All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { AFormItem } from './a-form-item';
import { Option } from './option';
import { OptionSelector } from './option-selector';
import { OptionSet } from './option-set';
export declare class OptionGroup<O extends Option> extends AFormItem {
    options: Array<OptionSelector<O>>;
    optionSets: Array<OptionSet<O>>;
    minSelections: number;
    maxSelections: number;
}