import * as t from 'io-ts';
import { IExtension } from './RTTI_Extension';
import { IElement } from './RTTI_Element';
export interface IPeriod {
    id?: string;
    extension?: IExtension[];
    start?: string;
    _start?: IElement;
    end?: string;
    _end?: IElement;
}
export declare const RTTI_Period: t.Type<IPeriod>;