if (ClusterBackend.debugPrint)
if (ClusterBackend.debugging)
    public static void optimize(SIRStream str) {        Optimizer est = new Optimizer();        if (ClusterBackend.debugPrint)            System.out.print("Optimizing filters...");        IterFactory.createFactory().createIter(str).accept(est);        if (ClusterBackend.debugPrint)            System.out.println("done.");    }