How to edit PlayableDirector variables via script

I have a looping timeline, which I want to check if something has occurred before it loops. As there are no events (yet), I'm using a custom playable.

The custom playable gets a reference to the class which keeps track of the state, when the clip is entered into the state is checked ->
If state is ok then stop this timeline and play bound timeline.

I would like to stop the current timeline via either Stop() or changing the WrapMode to not loop.

How? I can't find how to access either the timeline the track is played on from the clip, or wrap mode on the playable director.

 

Achieved what I was after by doing

Code (csharp):

1. PlayableGraph thisGraph = playable.GetGraph();

and then

Code (csharp):

1. thisGraph.Stop();

where required.