import { IElement, IQuestionnaireResponseAnswer, IQuestionnaireResponseItem, IOperationOutcome } from 'fhirtypes/dist/r4';
import { BackboneElement, IValidatable, ISerializable } from '../base';
/**
  * @version R4 (v4.0.1)
  * @summary FHIR® Specification by HL7®
  * @description Class for QuestionnaireResponseItem BackboneElement
  undefined
  * @property {string} linkId
  * @property {IElement} _linkId
  * @property {string} definition
  * @property {IElement} _definition
  * @property {string} text
  * @property {IElement} _text
  * @property {IQuestionnaireResponseAnswer[]} answer
  * @property {IQuestionnaireResponseItem[]} item
  * @author Roberto Araneda Espinoza
  */
export declare class QuestionnaireResponseItem extends BackboneElement implements IQuestionnaireResponseItem, IValidatable, ISerializable {
    /**
     * @description The item from the Questionnaire that corresponds to this item in the QuestionnaireResponse resource.
     */
    linkId: string;
    /**
     * @description Extensions for linkId
     */
    _linkId?: IElement;
    /**
     * @description A reference to an [[[ElementDefinition]]] that provides the details for the item.
     */
    definition?: string;
    /**
     * @description Extensions for definition
     */
    _definition?: IElement;
    /**
     * @description Text that is displayed above the contents of the group or as the text of the question being answered.
     */
    text?: string;
    /**
     * @description Extensions for text
     */
    _text?: IElement;
    /**
     * @description The respondent's answer(s) to the question.
     */
    answer?: IQuestionnaireResponseAnswer[];
    /**
     * @description Questions or sub-groups nested beneath a question or group.
     */
    item?: IQuestionnaireResponseItem[];
    /**
     * @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?: IQuestionnaireResponseItem);
}