import { ClientCancellableCall } from "../call/ClientCancellableCall";
import { Callback } from "../util/Callback";
import { SetTimeRequest } from "../model/SetTimeRequest";
import { ClientReadableObjectStream } from "../call/ClientReadableObjectStream";
import { GetTimeResponse } from "../model/GetTimeResponse";
/**
 * Optional service, exposed for testing static time scenarios.
 */
export interface TimeClient {
    /**
     * Returns a stream of time updates.
     *
     * Always returns at least one response, where the first one is the current
     * time.
     *
     * Subsequent responses are emitted whenever the ledger server's time is
     * updated.
     */
    getTime(): ClientReadableObjectStream<GetTimeResponse>;
    /**
     * Allows clients to change the ledger's clock in an atomic get-and-set
     * operation.
     */
    setTime(requestObject: SetTimeRequest): Promise<void>;
    setTime(requestObject: SetTimeRequest, callback: Callback<void>): ClientCancellableCall;
}