import { RelationCollectionExporter } from '../relations/relation-collection';
import { SingleSubDocumentExoprter as SingleSubDocumentExporter } from './base-sub-document';
export declare class MainSubDocumentExporter extends SingleSubDocumentExporter {
    protected createRelationExporter(): RelationCollectionExporter;
    get rootElement(): string;
    protected fillWriterCore(): void;
    private exportDocumentBackground;
}