code: protected final void lazyInitRetrievers(
        final Map<String, Object> pAddParam) throws Exception {
      if (this.retrievers == null) {
        this.retrievers = new HashMap<String, ICsvDataRetriever>();
        GoodsPriceListRetriever<RS> gpr = new GoodsPriceListRetriever<RS>();
        gpr.setSrvI18n(getSrvI18n());
        gpr.setSrvOrm(getSrvOrm());
        gpr.setSrvDatabase(getSrvDatabase());
        gpr.setSrvAccSettings(getSrvAccSettings());
        this.retrievers.put("GoodsPriceListRetriever", gpr);
        ServicePriceListRetriever<RS> spr = new ServicePriceListRetriever<RS>();
        spr.setSrvI18n(getSrvI18n());
        spr.setSrvOrm(getSrvOrm());
        spr.setSrvAccSettings(getSrvAccSettings());
        this.retrievers.put("ServicePriceListRetriever", spr);
      }
    }
docs: <p>Lazy initialize retrievers.</p>
  @param pAddParam additional param
  @throws Exception - an exception