code: @Override
      public String getDocletSpecificBuildDate() {
          if (versionRB == null) {
              try {
                  versionRB = ResourceBundle.getBundle(versionRBName);
              } catch (MissingResourceException e) {
                  return BUILD_DATE;
              }
          }
  
          try {
              return versionRB.getString("release");
          } catch (MissingResourceException e) {
              return BUILD_DATE;
          }
      }
docs: Return the build date for the doclet.