import { JoiHelper } from '../../../helpers/joiHelper';
import { XMLObject } from '../../openapi/definitions';
import { PostmanHelperInterface } from './interfaces';
export declare class PostmanJoiHelper extends JoiHelper implements PostmanHelperInterface {
    getFirstItem(): PostmanJoiHelper | undefined;
    getChildren(): Record<string, PostmanJoiHelper>;
    getAlternatives(): PostmanJoiHelper[];
    hasContentType(): boolean;
    getContentType(): string | undefined;
    hasDescriptionType(): boolean;
    getDescriptionType(): string | undefined;
    hasXml(): boolean;
    getXml(): XMLObject | undefined;
}