StateVars {
  GroupMute
  GroupVolume
  GroupVolumeChangeable
  A_ARG_TYPE_InstanceID
  A_ARG_TYPE_VolumeAdjustment
}

Actions {
  GetGroupMute(InstanceID: ui4) -> (CurrentMute: Boolean)
  SetGroupMute(InstanceID: ui4, DesiredMute: Boolean)
  GetGroupVolume(InstanceID: ui4) -> (CurrentVolume: 0..=100)
  SetGroupVolume(InstanceID: ui4, DesiredVolume: 0..=100)
  SetRelativeGroupVolume(InstanceID: ui4, Adjustment: i4) -> (NewVolume: 0..=100)
  SnapshotGroupVolume(InstanceID: ui4)
}