import { AbstractContent } from './abstract-content';
import { IFileContent } from '../../types';
/**
 * Implementation of file content.
 */
export declare class FileContent extends AbstractContent implements IFileContent {
    fileUrl: string;
    fileMimeType: string;
    fileCaption: string;
    fileName: string;
    /**
     * Returns a new `FileContent` that can be used to send audio, image, video, or document media to your customer.
     *
     * @param url The protocol and URL of the media to be sent. Use only with HTTP/HTTPS URLs.
     * @param mimeType A media type to indicates the nature and format of a media.
     * @param caption Describes the specified audio, image, video, or document media.
     * @param name The file name of the specified audio, image, video, or document media.
     */
    constructor(url: string, mimeType: string, caption?: string, name?: string);
}