data class TrackPublishedEvent(val userId: String, val sessionId: String, val trackType: <Error class: unknown class>, val participant: <Error class: unknown class>? = null) : SfuDataEvent
val participant: <Error class: unknown class>? = null
Optional participant information included for large calls optimization. When present, it should be used to create/update the participant. Not always available - don't assume it will be there.