import { RestMethodOptions } from '../models';
import RequestBuilder from './request-builder';
export default class BodyBuilder {
    private opt;
    private req;
    readonly body: string | Record<string, any>;
    readonly defaultFields: Record<string, any>;
    private factory;
    readonly bodyPart: {};
    get hasBodyPart(): boolean;
    constructor(opt: RestMethodOptions, req: RequestBuilder);
    private initBody;
    private fillBody;
    private applyFields;
}