code: public static VatIdMapSharedConstants create() {
      if (vatIdMapConstants == null) { // NOPMD it's thread save!
        synchronized (VatIdMapConstantsImpl.class) {
          if (vatIdMapConstants == null) {
            vatIdMapConstants =
                new VatIdMapConstantsImpl(readMapFromProperties("VatIdMapConstants", "vatIds"));
          }
        }
      }
      return vatIdMapConstants;
    }
docs: Instantiates a class via deferred binding.
  
  @return the new instance, which must be cast to the requested class