code: public static TaxNumberMapSharedConstants create() {
      if (taxNumberMapConstants == null) { // NOPMD it's thread save!
        synchronized (TaxNumberMapConstants.class) {
          if (taxNumberMapConstants == null) {
            taxNumberMapConstants = GWT.create(TaxNumberMapConstants.class);
          }
        }
      }
      return taxNumberMapConstants;
    }
docs: Instantiates a class via deferred binding.
  
  @return the new instance, which must be cast to the requested class