import { ExifToolTask, ExifToolTaskOptions } from "./ExifToolTask";
/**
 * Task for retrieving the ExifTool tag information in XML format.
 * This runs `exiftool -listx` and returns the raw XML output.
 */
export declare class ListXTask extends ExifToolTask<string> {
    /**
     * @param options task options
     */
    constructor(options?: ExifToolTaskOptions);
    protected parse(input: string): string;
}