RtcChannelEventHandler constructor

RtcChannelEventHandler(
    {WarningCallback warning,
    ErrorCallback error,
    UidWithElapsedCallback joinChannelSuccess,
    UidWithElapsedCallback rejoinChannelSuccess,
    RtcStatsCallback leaveChannel,
    ClientRoleCallback clientRoleChanged,
    UidWithElapsedCallback userJoined,
    UserOfflineCallback userOffline,
    ConnectionStateCallback connectionStateChanged,
    EmptyCallback connectionLost,
    TokenCallback tokenPrivilegeWillExpire,
    EmptyCallback requestToken,
    UidCallback activeSpeaker,
    VideoSizeCallback videoSizeChanged,
    RemoteVideoStateCallback remoteVideoStateChanged,
    RemoteAudioStateCallback remoteAudioStateChanged,
    FallbackCallback localPublishFallbackToAudioOnly,
    FallbackWithUidCallback remoteSubscribeFallbackToAudioOnly,
    RtcStatsCallback rtcStats,
    NetworkQualityWithUidCallback networkQuality,
    RemoteVideoStatsCallback remoteVideoStats,
    RemoteAudioStatsCallback remoteAudioStats,
    RtmpStreamingStateCallback rtmpStreamingStateChanged,
    EmptyCallback transcodingUpdated,
    StreamInjectedStatusCallback streamInjectedStatus,
    StreamMessageCallback streamMessage,
    StreamMessageErrorCallback streamMessageError,
    MediaRelayStateCallback channelMediaRelayStateChanged,
    MediaRelayEventCallback channelMediaRelayEvent,
    MetadataCallback metadataReceived,
    StreamPublishStateCallback audioPublishStateChanged,
    StreamPublishStateCallback videoPublishStateChanged,
    StreamSubscribeStateCallback audioSubscribeStateChanged,
    StreamSubscribeStateCallback videoSubscribeStateChanged,
    RtmpStreamingEventCallback rtmpStreamingEvent}
)

RtcChannelEventHandler(
  {this.warning,
  this.error,
  this.joinChannelSuccess,
  this.rejoinChannelSuccess,
  this.leaveChannel,
  this.clientRoleChanged,
  this.userJoined,
  this.userOffline,
  this.connectionStateChanged,
  this.connectionLost,
  this.tokenPrivilegeWillExpire,
  this.requestToken,
  this.activeSpeaker,
  this.videoSizeChanged,
  this.remoteVideoStateChanged,
  this.remoteAudioStateChanged,
  this.localPublishFallbackToAudioOnly,
  this.remoteSubscribeFallbackToAudioOnly,
  this.rtcStats,
  this.networkQuality,
  this.remoteVideoStats,
  this.remoteAudioStats,
  this.rtmpStreamingStateChanged,
  this.transcodingUpdated,
  this.streamInjectedStatus,
  this.streamMessage,
  this.streamMessageError,
  this.channelMediaRelayStateChanged,
  this.channelMediaRelayEvent,
  this.metadataReceived,
  this.audioPublishStateChanged,
  this.videoPublishStateChanged,
  this.audioSubscribeStateChanged,
  this.videoSubscribeStateChanged,
  this.rtmpStreamingEvent});