import { PullAudioOutputStream } from "./Audio/AudioOutputStream";
/**
 * Defines contents of received message/events.
 * @class ActivityReceivedEventArgs
 */
export declare class ActivityReceivedEventArgs {
    private privActivity;
    private privAudioStream;
    /**
     * Creates and initializes an instance of this class.
     * @constructor
     * @param {any} activity - The activity..
     */
    constructor(activity: any, audioStream?: PullAudioOutputStream);
    /**
     * Gets the received activity
     * @member ActivityReceivedEventArgs.prototype.activity
     * @function
     * @public
     * @returns {any} the received activity.
     */
    readonly activity: any;
    readonly audioStream: PullAudioOutputStream;
}