onPlaybackStart  
  suspend fun onPlaybackStart(itemId: <Error class: unknown class>, mediaSourceId: String? = null, audioStreamIndex: Int? = null, subtitleStreamIndex: Int? = null, playMethod: <Error class: unknown class>? = null, liveStreamId: String? = null, playSessionId: String? = null, canSeek: Boolean? = false): Response<Unit>
Deprecated
This member is deprecated and may be removed in the future
Reports that a session has begun playing an item.
Parameters
itemId 
Item id.
mediaSourceId  
The id of the MediaSource.
audioStreamIndex  
The audio stream index.
subtitleStreamIndex  
The subtitle stream index.
playMethod 
The play method.
liveStreamId  
The live stream id.
playSessionId  
The play session id.
canSeek 
Indicates if the client can seek.
Deprecated
This member is deprecated and may be removed in the future
Reports that a session has begun playing an item.
Parameters
request
The request parameters