Values ¶
            pdg.tickResult.SchedulerReady
        
The scheduler is ready to schedule ready work items, the onSchedule callback may be called with new items.
            pdg.tickResult.SchedulerBusy
        
The scheduler can not schedule ready work items, onSchedule will not be called until SchedulerReady is returned.
            pdg.tickResult.SchedulerCancelCook
        
The scheduler has encountered a fatal error and the graph cook should be cancelled.