OnRemoteAudioStateChangedType typedef Null safety

OnRemoteAudioStateChangedType = void Function(RemoteStreamKey streamKey, RemoteAudioState state, RemoteAudioStateChangeReason reason)

streamKey：远端流信息

state：远端音频流状态

reason：远端音频流状态改变的原因

Implementation

typedef OnRemoteAudioStateChangedType = void Function(RemoteStreamKey streamKey,
    RemoteAudioState state, RemoteAudioStateChangeReason reason);