docs: protected final CnvTfsLong
      lazyGetCnvTfsLong() throws Exception {
      CnvTfsLong convrt = (CnvTfsLong) convertersMap
        .get(CnvTfsLong.class.getSimpleName());
      if (convrt == null) {
        convrt = new CnvTfsLong();
        this.convertersMap.put(CnvTfsLong.class.getSimpleName(), convrt);
      }
      return convrt;
    }