import { CodeStub } from '../base/CodeStub.mjs';
/**
 *
 *  Represents a duration with a numeric value and a time unit code.
 *  /
 */
export declare class Duration {
    /**
     *
     *  The numeric value of the duration.
     */
    value: number | undefined;
    /**
     *
     *  The coded time unit (CD-TIMEUNIT) for this duration.
     */
    unit: CodeStub | undefined;
    constructor(partial: Partial<Duration>);
    toJSON(): object;
    static fromJSON(json: any, ignoreUnknownKeys?: boolean, path?: Array<string>): Duration;
}