Can FSM.Transaction() accept a parameter to cancel the asynchronous transaction?

[suerta-git]

As far as I know, after I triggered an asynchronous event, the only thing I can do is calling FSM.Transaction() to finish its transaction.

sm := fsm.NewFSM(
	"start",
	fsm.Events{
		{Name: "start", Src: []string{"start"}, Dst: "end"},
	},
	fsm.Callbacks{
		"leave_start": func(e *fsm.Event) {
			e.Async()
		},
	},
)

_ = sm.Event("start")    //  Return immediately

// Do my own business

// It's impossible to cancel the event at this time
_ = sm.Transaction()    //  Only can finish transaction

Currently there is no way to interrupt an asynchronous transaction on demand, right?

So I suppose maybe Transaction() method can accept a parameter to cancel the execution.

[suerta-git]

Or a new method is ok

[annismckenzie]

With #88 merged this is now possible. You can take a look at the relevant example: https://github.com/looplab/fsm/blob/main/examples/cancel_async_transition.go.