import { ValidatorFn } from '@angular/forms';
/**
 * This is only applicable to quick form checkbox field types.
 */
export declare class CheckboxValidators {
    /**
     * Validates that 'checkbox' quick form field has the specified minimum number of selected values.
     *
     * @param min Minimum number of selected values required to pass validation.
     */
    static minSelectedValues(min: number): ValidatorFn;
}