unloadAll method
@detail api
@author zhangyuanyuan.0101
@brief Unloads all audio effect files.
@return
- 0: Success.
- < 0 : Fail. See ByteRTCReturnStatus{@link #ByteRTCReturnStatus} for more details.
@note After calling this method, regarding the current mixing state, if setEventHandler:{@link #ByteRTCAudioEffectPlayer#setEventHandler} is set, you will receive the onAudioEffectPlayerStateChanged callback.
Implementation
FutureOr<int> unloadAll() async {
return await nativeCall('unloadAll', []);
}