import { GeoPackage } from '../../geoPackage';
import { Extension } from '../extension';
import { BaseExtension } from '../baseExtension';
/**
 * OGC Well known text representation of Coordinate Reference Systems extensionName
 */
export declare class CrsWktExtension extends BaseExtension {
    static readonly EXTENSION_NAME: string;
    static readonly EXTENSION_CRS_WKT_AUTHOR: string;
    static readonly EXTENSION_CRS_WKT_NAME_NO_AUTHOR: string;
    static readonly EXTENSION_CRS_WKT_DEFINITION: string;
    /**
     * OGC Well known text representation of Coordinate Reference Systems extensionName
     */
    constructor(geoPackage: GeoPackage);
    /**
     * Get or create the extension
     */
    getOrCreateExtension(): Extension;
    has(): boolean;
    removeExtension(): void;
}