StateVars {
  A_ARG_TYPE_InstanceID
  A_ARG_TYPE_PlayerID
  A_ARG_TYPE_Volume
  A_ARG_TYPE_CurrentTransportSettings
  A_ARG_TYPE_Speed
  CurrentTrackMetaData
  EnqueuedTransportURIMetaData
  AVTransportURIMetaData
  CurrentTransportActions
  LastChange
}

Actions {
  StartTransmission(InstanceID: ui4, CoordinatorID: String) -> (CurrentTransportSettings: String)
  StopTransmission(InstanceID: ui4, CoordinatorID: String)
  Play(InstanceID: ui4, Speed: String)
  Pause(InstanceID: ui4)
  Next(InstanceID: ui4)
  Previous(InstanceID: ui4)
  Stop(InstanceID: ui4)
  SetVolume(InstanceID: ui4, DesiredVolume: ui2)
}