public interface HasDefaultTracker<RestrictionT extends HasDefaultTracker<RestrictionT,TrackerT>,TrackerT extends RestrictionTracker<RestrictionT>>
DoFn.NewTracker is available, depending only on the restriction
 itself.| Modifier and Type | Method and Description | 
|---|---|
| TrackerT | newTracker()Creates a new tracker for  this. | 
TrackerT newTracker()
this.