/// <reference types="node" />
import FetchResult from '../common/models/FetchResult';
import ICas from './interfaces/ICas';
import ServiceVersionModel from '../common/models/ServiceVersionModel';
/**
 * Class that communicates with the underlying CAS using REST API defined by the protocol document.
 */
export default class Cas implements ICas {
    uri: string;
    private fetch;
    private serviceVersionFetcher;
    constructor(uri: string);
    write(content: Buffer): Promise<string>;
    read(address: string, maxSizeInBytes: number): Promise<FetchResult>;
    /**
     * Gets the service version.
     */
    getServiceVersion(): Promise<ServiceVersionModel>;
}