private Set<String> findPlanOnQouteProductLineNames() {
        Set<String> selectedProductLines = new HashSet<String>();
        for (PlanOfferingPackage planOfferingPackage : findCurrentPlanOfferings().getPlanPackages()) {
            for (PlanTypeCategory planTypeCategory : planOfferingPackage.getBean().getPlanTypeCategory()) {
                selectedProductLines.add(planTypeCategory.getPlanType());
            }
        }

        return selectedProductLines;
    }

    private PlanOfferings findCurrentPlanOfferings() {
        for (PlanOfferings planOfferings : renewalSession.getPlanOfferingsDetails(renewalProcess.findByQuoteId(quoteId).getId(), quoteId)) {
            if (planOfferings.getPlanOfferingId() == planOfferingId) {
                return planOfferings;
            }
        }
        return null;
    }