question: private boolean stopTrackingJob ( JobStatus jobStatus ) { boolean removed ; boolean rocking ; synchronized ( mJobs ) { removed = mJobs . remove ( jobStatus ) ; rocking = mReadyToRock ; } if ( removed && rocking ) { for ( int i = 0 ; i < mControllers . size ( ) ; i ++ ) { StateController controller = mControllers . get ( i ) ; controller . maybeStopTrackingJob ( jobStatus ) ; } } return removed ; }
target:  Called when we want to remove a JobStatus object that we've finished executing. Returns the object removed.