/** Retrieves the status of the current audio playback device.
         *
         * @return Whether the current audio playback device stops audio playback.
         * - true: Stops.
         * - false: Doesn't stop.
         */
        public override bool IsAudioPlaybackDeviceMute()
        {
            if (mEngine == null)
            {
                return(false);
            }

            return(IRtcEngineNative.isAudioPlaybackDeviceMute());
        }