import { ICoding, IElement } from 'fhirtypes/dist/r4';
import { CodingBuilder } from '../../builders';
import { Element } from '../base/Element';
import { IValidatable } from '../base/IValidatable';
import { ISerializable } from '../base/ISerializable';
/**
 * @description A reference to a code defined by a terminology system.
 * @property {string} code - Symbol in syntax defined by the system
 * @property {string} display - Representation defined by the system
 * @property {string} system - Identity of the terminology system
 * @property {string} version - Version of the system - if relevant
 * @property {boolean} userSelected - If this coding was chosen directly by the user
 * @property {IElement} _system - Extension of system
 * @property {IElement} _version - Extension of version
 * @property {IElement} _code - Extension of code
 * @property {IElement} _display - Extension of display
 * @property {IElement} _userSelected - Extension of userSelected
 * @implements {ICoding}
 * @see https://www.hl7.org/fhir/datatypes.html#Coding Coding
 * @author Roberto Araneda
 */
export declare class Coding extends Element implements ICoding, IValidatable, ISerializable {
    /**
     * @description Identity of the terminology system
     */
    system: string;
    /**
     * @description Version of the system - if relevant
     */
    version: string;
    /**
     * @description Symbol in syntax defined by the system
     */
    code: string;
    /**
     * @description Representation defined by the system
     */
    display: string;
    /**
     * @description If this coding was chosen directly by the user
     */
    userSelected: boolean;
    /**
     * @description Extension of system
     */
    _system: IElement;
    /**
     * @description Extension of version
     */
    _version: IElement;
    /**
     * @description Extension of code
     */
    _code: IElement;
    /**
     * @description Extension of display
     */
    _display: IElement;
    /**
     * @description Extension of userSelected
     */
    _userSelected: IElement;
    toJson(): any;
    toPrettyString(): string;
    toString(): string;
    validate(): {
        isValid: boolean;
        operationOutcome: import("fhirtypes/dist/r4").IOperationOutcome;
    };
    constructor(args?: ICoding);
    protected builderInstance(): CodingBuilder;
    serialize(): string;
}