import { ICodeableConcept, IElement } from 'fhirtypes/dist/r4';
import { IPatientCommunication, IOperationOutcome } from 'fhirtypes/dist/r4';
import { BackboneElement, IValidatable, ISerializable } from '../base';
/**
 * @version R4 (v4.0.1)
 * @summary FHIR® Specification by HL7®
 * @description Class for PatientCommunication BackboneElement
 * @property {ICodeableConcept} language
 * @property {boolean} preferred
 * @property {IElement} _preferred
 * @author Roberto Araneda Espinoza
 */
export declare class PatientCommunication extends BackboneElement implements IPatientCommunication, IValidatable, ISerializable {
    /**
     * @description The ISO-639-1 alpha 2 code in lower case for the language, optionally followed by a hyphen and the ISO-3166-1 alpha 2 code for the region in upper case; e.g. "en" for English, or "en-US" for American English versus "en-EN" for England English.
     */
    language: ICodeableConcept;
    /**
     * @description Indicates whether or not the patient prefers this language (over other languages he masters up a certain level).
     */
    preferred?: boolean;
    /**
     * @description Extensions for preferred
     */
    _preferred?: IElement;
    /**
     * @description Returns a JSON representation of the model
     * @returns {Record<string, any>}
     */
    toJson(): Record<string, any>;
    /**
     * @description Returns a string representation of the model
     * @returns {string}
     */
    toString(): string;
    /**
     * @description Returns a pretty string representation of the model
     * @returns {string}
     */
    toPrettyString(): string;
    /**
     * @description Returns a serialized string representation of the model
     * @returns {string}
     */
    serialize(): string;
    /**
     * @description Validates the model
     * @returns {isValid: boolean, operationOutcome: IOperationOutcome}
     */
    validate(): {
        isValid: boolean;
        operationOutcome: IOperationOutcome;
    };
    constructor(args?: IPatientCommunication);
}