private void processOverPaint(Boolean OP, Boolean op) {
        // PDF 1.2 and earlier, only a single overprint parameter
        if (enabledOverpaint &&
                OP != null && op == null && overprintMode == 1) {
            overprintStroking = OP;
            overprintOther = overprintStroking;
        }
        // PDF 1.2 and over
        else if (OP != null) {
//            overprintStroking = OP.booleanValue();
//            overprintOther = op.booleanValue();
        }
        // else default inits of false for each is fine.
    }