import { Layout } from '../../Objects/Layout.js';
import { CadDocumentBuilder } from '../CadDocumentBuilder.js';
import { CadTemplateT } from './CadTemplate[T].js';
export declare class CadLayoutTemplate extends CadTemplateT<Layout> {
    paperSpaceBlockHandle: number | null;
    activeViewportHandle: number | null;
    baseUcsHandle: number | null;
    namesUcsHandle: number | null;
    lasActiveViewportHandle: number | null;
    viewportHandles: Set<number>;
    constructor(layout?: Layout);
    protected _build(builder: CadDocumentBuilder): void;
}
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