if (filter instanceof SIRTwoStageFilter) { SIRTwoStageFilter two = (SIRTwoStageFilter)filter; two.setInitPop(0); two.setInitPeek(0); two.setInitPush(0); }
    public static void removeIO(SIRFilter filter) {        filter.setPush(new JIntLiteral(0));        //filter.setOutputType(CStdType.Void);        filter.setPop(new JIntLiteral(0));        filter.setPeek(new JIntLiteral(0));        //filter.setInputType(CStdType.Void);    }