Available on all platforms
@:optionaloptionalthreadID:Null<Int>
Required when a worker thread reports a state change (WORK, IDLE, EXIT).
@:optionaloptionalstate:Null<State>
@:optionaloptionalmessage:Null<Dynamic>
@:optionaloptionaljobID:Null<Int>
event:ThreadEventType
@:optionaloptionaldoWork:Null<WorkFunction<(State, WorkOutput) ‑> Void>>